Hurricane Nate - October 2017 (2024)

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The initial circulation that would become Hurricane Nate formed within an unusually large area of low pressure across Central America called a cyclonic gyre. This large area of low pressure interacted with abnormally high oceanic heat content across the western Caribbean Sea to set the stage for tropical cyclone formation. Nate was the season’s fourteenth named storm and the ninth hurricane of the 2017 Atlantic hurricane season.

Early Life

The National Hurricane Center (NHC) began watching the waters east of Central America for development on October 2^nd. Upper level winds were not conducive for tropical cyclogenesis but the area of disturbed weather had the potential to develop with time as the upper level winds slackened.

By mid-afternoon on October 3rd a broad area of surface low pressure began to consolidate over the southwestern Caribbean Sea just north of the Panamacoast with NHC now giving the disturbance a medium chance of formation over the coming 5 days.

Computer models notoriously have a difficulttime with track and intensity forecasts when a low level center has yet to form - this was indeed the case with what would become Hurricane Nate. Large low pressure systems like the one that spawned Nate can be slow to concentrate their spin/vorticity enough to allow rapid strengthening. The very warm waters of the southwest Caribbean Sea likely contributed to faster than normal consolidation of low pressure across the region and the disturbance showed signs of strengthening almost immediately after the surface low began to take shape. Curved convective banding was evident on satellite imagery during the day on October 4th, thereforeNHCupgraded the disturbance to Tropical Depression #16 during the 11am update.

The newly-formed depression was steered to the north and west by a large area of high pressure extending from the southwest Atlantic Ocean across the Greater Antilles and the Caribbean Sea. This trajectory allowed the storm to approach the coast of Nicaragua while the pressure continued to drop and winds increased. The depression was upgraded to Tropical Storm Nate on October 5th.

Land interaction with the Central American coastlinecaused some modest disruption in Nate’s cloud pattern but winds remained at or above tropical storm force (>39mph), mostly to the east of the low level center. Any disruption in the inner core of Nate was short-lived as deep convection formed near the center prior to reemerging out over the warm ocean waters of the Gulf of Honduras early on October 6th.

Steady Strengthening

As the center of circulation left behind the detrimental effects of land interaction, the steady strengthening process resumed with Nate becoming the season’s 9^th hurricane early on October 7^th. Satellite presentation continued to improve as Nate threaded the needle of the Yucatan channel between Mexico’s Yucatan Peninsula and the west coast of Cuba. Of note was the extremely rapid north northwesterly motion that Nate attained. A 12-hour average of the system’s motion early on October 7^th yielded a forward motion of 28mph - making Hurricane Nate the fastest moving hurricane on record in the Gulf of Mexico.

Rapid forward motion would continue up through the eventual US landfall, whichhad largeimplications for impacts along the northern Gulf Coast with a larger than usual extension of the highest wind speeds near and to the east of the center’s location. In addition, the fast forward motion did not allow Hurricane Nate to take full advantage of the warm waters across the central Gulf of Mexico and Nate was likely much weaker than it could have been if the circulation had more time over the open water before landfall.

Approach and Landfall

Nate developed a central dense overcast (CDO) on October 7th with satellite cloud temperature estimates nearing -90ºC with of a 20 mile wide eye under the overlying cloud cover.

Hurricane Hunter aircraft measured winds of 90mph and a central pressure of 981mb prior to the 11am NHC update. Thisdata, along withgenerally favorable conditions for strengthening in the hurricane’s path, led to increasing intensity forecasts with Nate now forecast to make landfall as Category 2 Hurricane late on October 7th or early on the 8th. Luckily, increasing southwesterly wind shear and some dry air beginning to wrapinto the core began to halt the intensification process that afternoon as the circulation continued its rapid north-northwesterly motion towardthe northern Gulf Coast. The storm’s cloud pattern began to degrade as the coldest cloud temperatures began to warm during the late afternoon.

Nate made its first landfall near the mouth of the Mississippi River around 7pm on October 7th with winds of 85mph. The storm’s forward motion slowed a bit as the anticipated northward turn began. The southwestern quadrant of the circulation began to lose its deep convection as the storm approached the Mississippi coastline. A second landfall occurred just west of Biloxi, MSafter midnight on October 8th. Nate quickly took on a north-northeasterly motion after landfall as the circulation came under the influence of the mid-latitude westerlies.

Post Landfall

Nate was downgraded to a tropical storm prior to sunrise as frictional effects of land interaction and the increasing vertical wind shear began to substantially weaken the system. Surface observations indicated that Nate weakened to a tropical depression by the 11am NHC advisory. The circulation continued its northeastward motion across the southeast and into Ohio where the remnant low became extratropical.

Unfortunately, there were twodeaths directly related to Hurricane Nate (rip current related). Twomen drowned in the Gulf of Mexico near Fort Morgan (Baldwin County, AL) while attempting to rescue a child that fell into the high surf on the evening of October 9th.

Summary of all Local Storm Reports (LSRs) across the area during Hurricane Nate and LSRs across the region during Nate.

Hurricane Nate made landfall just to the west of our area (near Biloxi, MS), but significant impacts were felt across the entire region. The majority of this document will focus on the impacts from storm surge and windsacross southeast Mississippi, southwest Alabama and northwest Florida. Below are some of the regional impacts...

Jump to - Rainfall, Wind, Storm Surge, Tornado, Post-Tropical Cyclone Report, or Additional Information sections.

Interesting Hurricane Nate-Related Stats

Nate was the 14th named storm of the 2017 Atlantic Hurricane Season and the 9th hurricane. Nate was the first hurricane in October to make landfall along the northern Gulf Coast since the 2002 Atlantic Hurricane Season (Hurricane Lili - more info here). As of this writing (mid-October 2017), there have been 10 consecutive named storms in the Atlantic basin that reached hurricane status: Franklin, Gert, Harvey, Irma, Jose, Katia, Lee, Maria, Nate, & Ophelia. As mentioned in the next section, Nate holds the record for the fastest forward motion (28 mph) of a hurricane across the Gulf of Mexico.

RAINFALL

Nate’s 28 mph forward motion kept rainfall totals relatively low across the region (in comparison to rainfall totals produced by a slower moving system) with the highest amounts located on the east side of the hurricane. Storm total rainfall amounts generally ranged from 2-7 inches across inland locations with 7-10 inches of rain observed across the coastal counties. The wide spread of rainfall totals across the area can be seen in the image to the right (courtesy of NWS Birmingham).The highest storm total rainfall of 9.93 inches occurred at a CoCoRaHS site near Gulf Breeze in Santa Rosa County, FL. Another CoCoRaHS observer in Crestview, FL (Okaloosa County) observed 8.15 inches of rain during Hurricane Nate. Other notable storm total rainfall amounts (above 7 inches) occurred across Mobile and Baldwin Counties in southwest Alabama with 7.71 inches in Foley,7.37 inches in Tillmans Corner,7.20 inches in West Mobile,and 7.06 inches in Orange Beach, AL.

Across northwest Florida, numerous roads and bridges were closed in Santa Rosa County due to water flowing over the roads. A few roads became impassable across Okaloosa Countydue to flash flooding as well.

A breakdown of the CoCoRaHS rainfall reports from October 8th (not the entire storm total rainfall) can be viewed in the map below. A full list of rainfall totals can be found in the Post-Tropical Cyclone Report at the bottom of this webpage.

WIND

Wind gusts of 50+ mph were observed across the entire coastal area during Hurricane Nate with the strongest winds nearest to the center of Hurricane Nate acrossMobile County, AL and George County, MS and also along the immediate coastline. The highest wind gusts observed across the region were at Mobile Regional Airport with gusts to 66mph early in the morning on October 8th. Both the ASOS in Destin, FL and C-MAN Station near Dauphin Island, AL measured wind gusts to 58mph during Hurricane Nate.

Across southwest Alabama, scattered power outages and downed trees occurred throughout Mobile and Baldwin Countiesafter Hurricane Nate with the greatest coverage occurring on Dauphin Island in southern Mobile County. Damage from the wind also occurred to a factory in Calvert (far northeastern Mobile County). Numerous downed trees and power lines occurred across Clarke, Choctaw, and Washington Counties in southwest Alabama. An estimated 4500 houses were without power due to the hurricane in Washington County with another 4200 houses without power in Clarke County. Downed trees damaged houses and vehicles in Clarke and Butler Counties.

In southeast Mississippi,numerous trees were downed throughout George County. Several houses reported minor roof and shingle damage and one mobile home was destroyed after a tree fell on it during Hurricane Nate. A total of 7,000 power outages were reported across George County. Downed trees and power outages were also noted in Greene and Wayne Countiesin southeast Mississippi after Hurricane Nate.

A list of land and marine wind gusts (converted to mph) can be found in the table below.

STORM SURGE & COASTAL FLOODING

Storm surge was greatest on the eastern side of Hurricane Nate due to its angle of approach and forward speed. High tide occurred around the same time as Hurricane Nate made landfall, which further amplified the inundation issues for our coastal counties (across Alabama and northwest Florida).

The highest values across our area were observed in Mobile County, AL where peak surge inundation was generally 4-6 feet based on official tide gauges. However, thestorm surge survey team from our office visited the Bayou La Batre and Coden areas and indicated a peak surge of 6-8 feet along the immediate coastal areas (near Shell Belt Rd and Coden Belt Rd). The pictures below show the storm surge survey in the Bayou La Batre and Coden communities.Several houses in that area, as well as alongthe Dog River, experienced 2-3 feet of flooding inside structures due to surge. On the west end of Dauphin Island in southern Mobile County, 6 feet of sand was deposited along a 3 mile stretch of Bienville Blvd. There were approximately 25 houses that experienced surge flooding on the west end of Dauphin Island. Several more houses had minor damage from either the surge or wind.In downtown Mobile, both Water St and Cochrane Causeway (south of the Cochrane Bridge) wereflooded at the peak of the event. Parts of the Dauphin Island Parkway were also closed due to storm surge during the event. The Bankhead Tunnel in downtown Mobile closed prior to Nate (7am on the 7th) due to storm surge predictions.The Port of Mobile was closed through mid-day on October 9th.Numerous piers were damaged or destroyed.

Across Mobile Bay,3-6 feet of storm surge inundation occurred across the coastal portion of Baldwin County, AL. The highest surge inundationoccurred along the eastern shore of Mobile Bay and points further north into the Mobile River Delta. The Highway 90 Causeway over Mobile Bay was closed due to significant flooding.The image to the right is a view of the storm surge along the Causeway over Mobile Bay at daybreak on October 8th via the ALGOTraffic website and Alabama Department of Transportation. The surge in Baldwin County resulted in the damage of just under 200 piers, 62 of which sustained major damage and 2 of which were completely destroyed. 22 houses and 2 mobile homes had minor damage from either surge or strong wind gusts. Along the gulf side of Baldwin County, moderate to major beach erosion occurred in the Gulf Shores and Orange Beach areas.

Further east into Escambia County in the northwest Florida panhandle, official tide gauges indicated peak storm surge inundation of approximately 3 feet along the immediate coastal areas of the Pensacola Bay system. USGS data indicate peak storm surge inundation of 3-5 feet likely occurred at the immediate shore of the barrier islands. At Gulf Islands National Seashore, Fort Pickens Rd and a portion of Highway 399 between Navarre Beach and Pensacola Beachwere significantly damaged and expected to be closed through at least early December 2017. Fort Pickens Rd had 3 feet of sand covering it with 4 feet of sand deposited on some of the parking lots. The Port of Pensacola was also closed during the hurricane.

Peak storm surge inundation up to 3 feet occurred along the coastal portion of Escambia Bay and East Bay in Santa Rosa County, FL. A peak surge of 3-5 feet impacted areas along the immediate shore of Santa Rosa Island. Several piers were damaged in Santa Rosa County. USGS data from their rapid deployment gauge in Destin, FL (Okaloosa County) reported apeak surge of a little over 3 feet. A time series from the USGS rapid deployment gauge can be seen to the right.

Official NOAA/NOS/CO-OPS tide gauges were used to measure the maximum storm surge and storm tide across the area during Hurricane Nate. Time series plots from several of these NOAA/NOS/CO-OPS tide gauges across coastal Alabama and northwest Florida can be viewed below.One storm surge survey team used high water marks to measure the surge in the Bayou La Batre and Coden communities in southern Mobile County after Hurricane Nate.

The series of animated GIFs below show the National Geodetic Survey aerial imagery from Dauphin Island and Fort Morgan before and after Hurricane Nate. These animations show the extent of erosion across area beaches and barrier islands after Hurricane Nate.

Far West End of Dauphin Island West End of Dauphin Island (Public Beach Area)

Dauphin Island Dauphin Island

East End of Dauphin Island

Fort Morgan Fort Morgan

Fort Morgan

TORNADO

Nate spawned at least four EF0 tornadoes across the area and numerous waterspouts. The EF0 tornadoes occurred in Butler, Baldwin, andMobile Counties in Alabama and Wayne County inMississippi.

The pictureto the right show the damage from the brief EF0 tornado in Mobile County that occurred near our office in West Mobile. (Pictures taken by an off-duty NWS employee.) The tornado downedand twisted a large billboard on Airport Blvd and downed several large oak tree limbs. One building along Airport Blvd experienced damage to the facade, shingle damage,and broken windows. Windows were also blown out of vehicles at a car dealership, as well as window damage to the dealership building itself.

The EF0 tornado in Butler County, AL produced sporadic tree damage in the far northeastern portion of the county between County Road 75 and Highway 31. There was also minor roof and siding damage to a few homes in the area.The EF0 tornado in Baldwin County touched down in Waterfront Park in the Orange Beach area where it downed approximately 20 trees.The EF0 tornado southeast of Waynesboro in Wayne County, MS produced roof damage to three homes and uprooted several trees.

Post Tropical Cyclone Report

POST TROPICAL CYCLONE REPORT...HURRICANE NATE...UPDATEDNATIONAL WEATHER SERVICE MOBILE AL240 PM CDT TUE OCT 24 2017NOTE: THE DATA SHOWN HERE ARE PRELIMINARY....AND SUBJECT TO UPDATESAND CORRECTIONS AS APPROPRIATE.THIS REPORT INCLUDES EVENTS OCCURRING WHEN WATCHES AND/OR WARNINGSWERE IN EFFECT...OR WHEN SIGNIFICANT FLOODING ASSOCIATED WITH NATEOR ITS REMNANTS WAS AFFECTING THE AREA.COUNTIES INCLUDED...BALDWIN...BUTLER...CHOCTAW...CLARKE...CONECUH...COVINGTON...CRENSHAW...ESCAMBIA AL...ESCAMBIA FL...GEORGE...GREENE...MOBILE...MONROE...OKALOOSA...PERRY...SANTA ROSA...STONE...WASHINGTON...WAYNE...WILCOXOCT 20...UPDATED FOR...COUNTY IMPACTS AND ADDITIONAL WIND ANDTORNADO INFORMATION.A. LOWEST SEA LEVEL PRESSURE/MAXIMUM SUSTAINED WINDS AND PEAK GUSTS---------------------------------------------------------------------METAR OBSERVATIONS...NOTE: ANEMOMETER HEIGHT IS 10 METERS AND WIND AVERAGING IS 2 MINUTES---------------------------------------------------------------------LOCATION ID MIN DATE/ MAX DATE/ PEAK DATE/LAT LON PRES TIME SUST TIME GUST TIMEDEG DECIMAL (MB) (UTC) (KT) (UTC) (KT) (UTC)---------------------------------------------------------------------KMOB-MOBILE REGIONAL 30.67 -88.24 996.0 08/0756 160/040 08/0711 140/057 08/0711 KBFM-MOBILE BROOKLEY 30.64 -88.07 998.0 08/0753 150/031 08/0611 190/047 08/0748 KPNS-PENSACOLA REGIONAL 30.47 -87.20 1001.5 08/0853 160/033 08/0605 160/046 08/0501 KDTS-DESTIN 30.40 -86.47 1003.7 08/0853 180/027 08/1031 190/050 08/1031 KCEW-CRESTVIEW 30.79 -86.52 1003.6 08/0753 200/022 08/1353 220/036 08/0727 KGZH-EVERGREEN 31.41 -87.04 1001.3 08/0753 190/023 08/1335 190/031 08/1153 KPRN-GREENVILLE 31.84 -86.61 1001.9 08/0856 110/024 08/0856 160/034 08/1112 KJKA-GULF SHORES 30.29 -87.67 1001.0 08/0815 140/024 08/0335 160/039 08/0455 KNPA-PENSACOLA NAS 30.36 -87.32 1001.6 08/0856 150/035 08/0422 140/046 08/0422 KCQF-FAIRHOPE 30.46 -87.88 999.9 08/0755 160/023 08/0615 150/036 08/0415 KHRT-HURLBURT FIELD 30.43 -86.69 1002.8 08/0940 160/034 08/0747 190/045 08/1201 KVPS-EGLIN AFB 30.48 -86.53 1003.9 08/0855 170/029 08/0955 170/042 08/0955 REMARKS: NON-METAR OBSERVATIONS... NOTE: ANEMOMETER HEIGHT IN METERS AND WIND AVERAGING PERIOD INMINUTES INDICATED UNDER MAXIMUM SUSTAINED WIND IF KNOWN---------------------------------------------------------------------LOCATION ID MIN DATE/ MAX DATE/ PEAK DATE/LAT LON PRES TIME SUST TIME GUST TIMEDEG DECIMAL (MB) (UTC) (KT) (UTC) (KT) (UTC)---------------------------------------------------------------------XBUC-BUCCANEER YACHT CLUB (WEATHERFLOW) 30.58 -88.07 997.5 08/0742 150/038 08/0647 150/049 08/0657 10/ XGLF-FOLEY (WEATHERFLOW) 30.36 -87.65 160/025 08/0455 170/041 08/0500 10/ XGLF-GULF BREEZE (WEATHERFLOW) 30.36 -87.16 999.8 08/0813 120/024 08/0418 120/039 08/0418 15/ FAIRHOPE (USA CHILI) 30.54 -87.90 175/033 08/0702 195/038 08/0804 10/ DOG RIVER (USA CHILI) 30.56 -88.10 999/034 08/0633 999/040 08/0748 10/ LOXLEY (USA CHILI) 30.64 -87.70 130/037 08/0616 115/044 08/0330 10/ ATMORE (USA CHILI) 31.02 -87.40 135/029 08/0703 150/036 08/0704 10/ ELBERTA (USA CHILI) 30.41 -87.60 125/028 08/0310 115/037 08/0305 10/ REMARKS: B. MARINE OBSERVATIONS...NOTE: ANEMOMETER HEIGHT IN METERS AND WIND AVERAGING PERIOD INMINUTES INDICATED UNDER MAXIMUM SUSTAINED WIND IF KNOWN---------------------------------------------------------------------LOCATION ID MIN DATE/ MAX DATE/ PEAK DATE/LAT LON PRES TIME SUST TIME GUST TIMEDEG DECIMAL (MB) (UTC) (KT) (UTC) (KT) (UTC)---------------------------------------------------------------------DPIA1-DAUPHIN ISLAND AL 30.25 -88.08 998.7 08/0600 140/037 08/0400 160/050 08/0526 14/1042012--12NM SOUTH ORANGE BEACH AL 30.06 -87.55 1000.7 08/0650 150/039 08/0421 160/047 08/0421 05/01MLBA1-MIDDLE BAY LIGHT 30.43 -88.01 999.7 08/0812 200/047 08/0826 14/01CRTA1-CEDAR POINT 30.30 -88.14 996.3 08/0617 160/044 08/0540 12/01KATA1-KATRINA CUT 30.25 -88.21 996.6 08/0520 180/047 08/0521 MHPA1-MEAHER PARK 30.67 -87.94 997.6 08/0715 180/040 08/0826 XMLP-PERDIDO BAY (WEATHERFLOW) 30.27 -87.56 1000.0 08/0752 140/030 08/0607 140/042 08/0612 05/XFPL-PENSACOLA BAY (WEATHERFLOW) 30.36 -87.21 1001.5 08/0807 070/035 08/0432 070/049 08/0432 05/XFWB-CHOCTAWHATCHEE BAY (WEATHERFLOW) 30.40 -86.56 140/034 08/0728 160/045 08/0758 07/REMARKS: C. STORM TOTAL RAINFALL FROM 1200 UTC OCT 07 UNTIL 1200 UTC OCT 08---------------------------------------------------------------------CITY/TOWN COUNTY ID RAINFALLLAT LON (IN) DEG DECIMAL---------------------------------------------------------------------7.2 ENE GULF BREEZE SANTA ROSA FL-SR-19 9.93 30.39 -87.081.9 SE CRESTVIEW OKALOOSA FL-OK-23 8.15 30.74 -86.554.5 SE FOLEY BALDWIN AL-BW-74 7.71 30.35 -87.634.3 WNW TILLMANS CORNER BALDWIN AL-MB-1 7.37 30.61 -88.2410.2 WSW MOBILE MOBILE AL-MB-60 7.20 30.44 -88.712.1 NE ORANGE BEACH BALDWIN AL-BW-27 7.06 30.32 -87.553.1 SSW ELBERTA BALDWIN AL-BW-53 6.96 30.37 -87.612.3 NE PENSACOLA ESCAMBIA FL-ES-37 6.80 30.44 -87.176.2 E NAVARRE SANTA ROSA FL-SR-21 6.75 30.40 -86.767.4 W MOBILE MOBILE AL-MB-35 6.63 30.65 -89.07SILVERHILL BALDWIN AL-BW-65 6.52 30.54 -87.75FAIRHOPE BALDWIN AL-BW-82 6.32 30.52 -87.902.6 WNW MOBILE MOBILE AL-MB-4 6.30 30.72 -88.23MARY ESTHER OKALOOSA FL-OK-29 6.17 30.42 -86.643.8 ENE PENSACOLA BEACH ESCAMBIA FL-ES-49 5.94 30.35 -87.084.2 NE DAPHNE BALDWIN AL-BW-36 5.81 30.64 -87.85GASQUE BALDWIN BONA1 5.70 30.25 -87.81LOXLEY BALDWIN AL-BW-26 5.34 30.61 -87.75DOWNTOWN MOBILE AIRPORT MOBILE KBFM 4.91 30.69 -88.045.6 NE EGLIN AFB OKALOOSA FL-OK-2 4.89 30.51 -86.481.2 NE SPANISH FORT BALDWIN AL-BW-58 4.73 30.68 -87.866.8 NNW SARALAND MOBILE AL-MB-14 4.72 30.91 -88.124.3 WSW JACKSON WASHINGTON AL-WS-1 4.70 31.48 -87.962.4 N PACE SANTA ROSA FL-SR-4 4.64 30.63 -87.162.1 SE NICEVILLE OKALOOSA FL-OK-37 4.53 30.47 -86.4413 SE LUCEDALE GEORGE MS-GG-2 4.50 30.79 -88.44MOBILE AIRPORT MOBILE KMOB 4.36 30.68 -88.245.40 WNW WAYNESBORO WAYNE MS-WY-2 4.19 31.70 -88.735.6 NW MILTON SANTA ROSA FL-SR-18 4.05 30.67 -87.093.6 WSW PINE HILL WILCOX AL-WX-1 4.02 31.96 -87.648 W URIAH MONROE AL-MN-3 3.84 31.30 -87.6410.9 N BAY MINETTE BALDWIN AL-BW-59 3.83 31.03 -87.776 SW GROVE HILL CLARKE AL-CK-3 3.72 31.64 -87.852.5 NNW GONZALEZ ESCAMBIA FL-ES-4 3.40 30.60 -87.31PENSACOLA AIRPORT ESCAMBIA KPNS 3.28 30.42 -87.1912.1 W CENTURY ESCAMBIA FL-ES-39 3.04 30.97 -87.47DESTIN OKALOOSA KDTS 2.90 30.40 -86.502.5 ESE EXCEL MONROE AL-MN-4 2.60 31.41 -87.31ANDALUSIA COVINGTON K79J 2.56 31.30 -86.481 NNE CAMDEN WILCOX AL-WX-2 2.56 32.00 -87.285.7 S REPTON CONECUH AL-CC-2 2.30 31.32 -87.242.40 N POLLARD ESCAMBIA AL-ES-1 2.27 31.05 -87.17EVERGREEN CONECUH KGZH 2.14 31.43 -86.9660 N TOXEY CHOCTAW AL-CW-1 2.03 32.78 -88.311.7 NE PERKINSTON STONE MS-ST-4 1.92 30.79 -89.12REMARKS: D. INLAND FLOODING...------------------------------------------------------------------------------------------------------------------------------------------E. MAXIMUM STORM SURGE AND STORM TIDE...OFFICIAL TIDE GAUGES NOTED WITH LEADING G---------------------------------------------------------------------COUNTY CITY/TOWN SURGE TIDE DATE/ BEACH OR LOCATION (FT) (FT) TIME EROSION ---------------------------------------------------------------------MOBILE G BAYOU LA BATRE 4.61 5.85 08/0742 MOBILE G W FOWL RIVER BR 4.12 5.56 08/0806 MOBILE G CHICKASAW CREEK 4.62 4.91 08/0954 MOBILE G MOBILE ST DOCKS 5.14 5.12 08/0848 MOBILE G USCG SECTOR MOB 5.36 5.73 08/0842 MOBILE G E FOWL RIVER BR 3.74 3.91 08/0624 MOBILE G DOG RIVER BRIDG 4.04 4.59 08/0754 MOBILE G DAUPHIN ISLAND 3.09 3.26 08/0442 MAJOR BALDWIN G WEEKS BAY 4.61 4.44 08/0842 ESCAMBIA G PENSACOLA BAY 3.22 3.07 08/0736 REMARKS: STORM TIDE READINGS ARE IN REFERENCE TO MEAN HIGHER HIGHWATER (MHHW) WHICH IS USED AS AN APPROXIMATION FOR INUNDATION ABOVENORMALLY DRY GROUND.. F. TORNADOES...---------------------------------------------------------------------(DIST)CITY/TOWN COUNTY DATE/ EF SCALE LAT LON (DEG DECIMAL TIME(UTC) (IF KNOWN)DESCRIPTION ---------------------------------------------------------------------2 SE WAYNESBORO WAYNE 08/0228 0 31.65 -88.62A BRIEF EF-0 TORNADO INITIALLY TOUCHED DOWN ON JO LAND DRIVE, MOVEDWEST NORTHWEST, AND LIFTED JUST NORTH OF COUNTY FARM ROAD AND OLDHIGHWAY 145. THREE HOMES EXPERIENCED ROOF DAMAGE. SOME TREES WEREALSO UPROOTED. 11 NE GREENVILLE BUTLER 07/2326 0 31.94 -86.48A BRIEF EF-0 TORNADO TOUCHED DOWN IN FAR NORTHEAST BUTLER COUNTY ONCOUNTY ROAD 75. THE TORNADO MOVED NORTHWEST AND LIFTED JUST EAST OFHIGHWAY 31. THE TORNADO PRODUCED SPORADIC TREE DAMAGE ALONG ITSPATH ALONG WITH MINOR ROOF DAMAGE TO ONE HOME AND MINOR SIDING DAMAGETO ANOTHER HOME.2 ENE MOBILE AIRPORT MOBILE 07/2147 0 30.68 -88.21A BRIEF EF-0 TORNADO TOUCHED DOWN ON PORTSIDE COURT AND TRAVELEDNORTHWEST, LIFTING NEAR THE INTERSECTION OF AIRPORT BLVD AND BORDERCIRCLE WEST. THE TORNADO DOWNED SEVERAL LARGE OAK TREE LIMBS. ALARGE BILLBOARD WAS DOWNED AND TWISTED NEAR AIRPORT BLVD. A SMALLPROFESSIONAL BUILDING EXPERIENCED SHINGLE DAMAGE, DAMAGE TO THEFACADE, AND BROKEN WINDOWS. JUST NORTH OF AIRPORT BLVD, WINDOWS WEREBLOWN OUT OF VEHICLES AT A CAR DEALERSHIP. THE DEALERSHIP ALSOSUFFERED SOME WINDOW DAMAGE.1 W ORANGE BEACH BALDWIN 07/2334 0 30.30 -87.60BRIEF EF-0 TORNADO TOUCHED DOWN IN WATERFRONT PARK. APPROXIMATELY 20TREES WERE DOWNED ACROSS A 200 YARD WIDE PATH IN THE PARK. G. STORM IMPACTS BY COUNTY...---------------------------------------------------------------------COUNTY DEATHS INJURIES EVACUATIONS DESCRIPTION---------------------------------------------------------------------

MOBILE 0 0 PEAK SURGE INUNDATION WAS GENERALLY 4 TO 6 FEET ACROSS MOBILECOUNTY. HOWEVER, SURVEYS OF THE BAYOU LA BATRE AND CODEN AREASINDICATE PEAK SURGE OF 6 TO 8 FEET ALONG THE IMMEDIATE COASTAL AREASOF SHELL BELT ROAD AND CODEN BELT ROAD. SEVERAL HOMES IN THIS AREAAND A FEW IN THE DOG RIVER AREA EXPERIENCED 2 TO 3 FEET OF FLOODINGINSIDE THE STRUCTURES. THE WEST END OF DAUPHIN ISLAND WASPARTICULARLY HARD HIT WITH 6 FEET OF SAND DEPOSITED ON A 3 MILESTRETCH OF BIENVILLE BLVD. APPROXIMATELY 25 HOMES EXPERIENCED SURGEFLOODING ON THE WEST END OF DAUPHIN ISLAND WITH SEVERAL OTHER HOMESEXPERIENCING MINOR DAMAGE FROM WIND OR THE SURGE. NUMEROUS PIERSWERE DAMAGED OR DESTROYED. WATER STREET IN DOWNTOWN MOBILE WAS FLOODED AT THE PEAK OF THE EVENT. SCATTERED POWER OUTAGES AND DOWNED TREES WERE REPORTED THROUGHOUT THE COUNTY WITH A GREATER COVERAGEOCCURRING ON DAUPHIN ISLAND. WIND DAMAGE OCCURRED AT A FACTORY IN CALVERT. A BRIEF EF-0 TORNADO TOUCHED DOWN IN WEST MOBILE. BALDWIN 2 0 3 TO 6 FEET OF STORM SURGE INUNDATION OCCURRED ACROSS COASTAL AREASOF BALDWIN COUNTY, WITH THE HIGHEST VALUES ALONG THE IMMEDIATEEASTERN SHORE OF MOBILE BAY AND NORTH INTO THE MOBILE RIVER DELTA.THE US HIGHWAY 90 CAUSEWAY WAS CLOSED DUE TO SIGNIFICANT FLOODING.THE SURGE MOSTLY RESULTED IN THE DAMAGE OF JUST UNDER 200 PIERS, 62OF WHICH WERE MAJORLY DAMAGED AND 2 THAT WERE COMPLETELY DESTROYED.22 HOMES AND 2 MOBILE HOMES EXPERIENCED MINOR DAMAGE FROM EITHERSTRONG WIND GUSTS OR SURGE. MODERATE TO MAJOR BEACH EROSION OCCURREDIN GULF SHORES AND ORANGE BEACH. SCATTERED DOWNED TREES AND POWEROUTAGES WERE REPORTED. A BRIEF EF-0 TORNADO IN FAR ORANGE BEACHPRODUCED MINOR TREE DAMAGE AT WATERFRONT PARK. ESCAMBIA FL  0 0 TIDE GAUGE INFORMATION FROM PENSACOLA BAY INDICATE PEAK INUNDATIONOF AROUND 3 FEET OCCURRED ALONG IMMEDIATE COASTAL AREAS OF THEPENSACOLA BAY SYSTEM. DATA FROM USGS INDICATES THAT A PEAK OF 3 TO 5FEET INUNDATION LIKELY OCCURRED AT THE IMMEDIATE SHORE OF THEBARRIER ISLANDS. THE GREATEST IMPACT WAS TO THE FORT PICKENS AREAWHERE PART OF THE FORT PICKENS ROADWAY WAS DAMAGED. THE ROAD HAD 3FEET OF SAND COVERING IT WITH 4 FEET OF SAND DEPOSITED ON SOME OFTHE PARKING LOTS. IN ADDITION, A PORTION OF HIGHWAY 399 BETWEENNAVARRE BEACH AND PENSACOLA BEACH WAS DAMAGED AND WILL LIKELY BECLOSED THROUGH EARLY DECEMBER. SANTA ROSA  0 0 PEAK SURGE INUNDATION OF UP TO 3 FEET LIKELY IMPACTED AREAS ALONGTHE COAST OF ESCAMBIA AND EAST BAYS. PEAK SURGE OF 3 TO 5 FEETIMPACTED AREAS ALONG THE IMMEDIATE SHORE OF SANTA ROSA ISLAND ASWELL AS ALONG THE SHORELINE OF SANTA ROSA SOUND. NUMEROUS PIERS WERE DAMAGED. OKALOOSA 0 0 PEAK SURGE OF AROUND 3 FEET WAS REPORTED BASED OFF OF USGS DATA. NO SIGNIFICANT DAMAGE WAS REPORTED. A FEW ROADS WERE IMPASSABLE DUE TO FLASH FLOODING. GEORGE 0 0 NUMEROUS TREES WERE DOWNED THROUGHOUT THE COUNTY. SEVERAL HOMESREPORTED MINOR ROOF AND SHINGLE DAMAGE. ONE MOBILE HOME WASDESTROYED DUE A TREE FALLING ON IT. A TOTAL OF 7,000 POWER OUTAGESWERE REPORTED. GREENE 0 0 SCATTERED DOWNED TREES AND POWER OUTAGES REPORTED ACROSS THE COUNTY.WAYNE 0 0 SCATTERED DOWNED TREES AND POWER OUTAGES REPORTED. AN EF-0 TORNADOPRODUCED ROOF DAMAGE TO A FEW BUILDINGS SOUTHEAST OF WAYNESBORO. WASHINGTON 0 0 NUMEROUS DOWNED TREES AND POWER LINES REPORTED ACROSS THE COUNTY. THREE HOMES WERE DAMAGED BY TREES. ESTIMATED 4500 HOMES WERE WITHOUT POWER. CHOCTAW 0 0 SCATTERED DOWN TREES AND POWER OUTAGES REPORTED ACROSS THE COUNTY. CLARKE 0 0 NUMEROUS DOWNED TREES AND POWER LINES REPORTED ACROSS THE COUNTY. DOWNED TREES DAMAGED ONE HOME AND TWO VEHICLES. ESTIMATED 4200 HOMESWERE WITHOUT POWER. BUTLER 0 0 ONE TREE FELL ONTO A MOBILE HOME IN GREENVILLE CAUSING MAJOR DAMAGE. A BRIEF EF-0 TORNADO IN FAR NORTHEAST BUTLER COUNTY PRODUCED MINORDAMAGE. ​$$Legend:I-Incomplete DataE-EstimatedJASON BEAMAN

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Acknowledgements: Page created by Morgan Barry (forecaster) & Ryan Rogers (forecaster).

LAST UPDATED: September 2018