A deep upper level low moving across the southern plains contributed a strong onshore flow across the north central Gulf Coast. The combination of the prolonged southerly winds and above normal tides resulted in minor coastal flooding in portions of Mobile County.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MOB wrote it up.
A deep upper level low moving across the southern plains contributed a strong onshore flow across the north central Gulf Coast. The combination of the prolonged southerly winds and above normal tides resulted in minor coastal flooding in portions of Mobile County.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Mobile, AL wrote its last area forecast discussion before the first event at Apr 30, 11:48 AM CST, 42 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Mobile AL 559 AM CDT Sun Apr 30 2017 ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-011100- Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw- Escambia-Covington-Mobile Inland-Baldwin Inland-Mobile Central- Baldwin Central-Mobile Coastal-Baldwin Coastal-Escambia Inland- Escambia Coastal-Santa Rosa Inland-Santa Rosa Coastal- Okaloosa Inland-Okaloosa Coastal-Wayne-Perry-Greene-Stone-George- 559 AM CDT Sun Apr 30 2017 This Hazardous Weather Outlook is for portions of south central Alabama...southwest Alabama...northwest Florida and southeast Mississippi. .DAY ONE...Today and Tonight Severe thunderstorms will be possible across much of the region today and tonight, with a potential for multiple rounds of storms to impact the area starting around noon or early this afternoon and continuing through late tonight. Damaging winds, large hail and a few tornadoes will all be possible. Heavy rainfall will be possible today and tonight as multiple rounds of storms move across the region, which could result in flooding of low lying and poor drainage areas. Isolated instances of flash flooding may also occur, particularly west of Interstate 65 where it currently appears there is a better potential for heavier rainfall through tonight. Wind speeds of 25 to 30 mph, with frequent gusts between 30 and 40 mph, are expected outside of thunderstorms through this evening. A Wind Advisory remains in effect for the entire area today through this evening. High surf and a high risk of rip currents will continue along area beaches through late tonight. Minor coastal flooding is possible today, particularly during the time of high tide this afternoon. .DAYS TWO THROUGH SEVEN...Monday through Saturday Another approaching storm system could bring another round of showers and thunderstorms, a few of which could be strong with locally heavy rainfall late Wednesday into Thursday. .SPOTTER INFORMATION STATEMENT... Storm spotter activation may be requested today and tonight. GMZ630>635-650-655-670-675-011100- Northern Mobile Bay-Southern Mobile Bay-Mississippi Sound- Perdido Bay-Pensacola Bay System-Choctawhatchee Bay- Coastal waters from Pensacola FL to Pascagoula MS out 20 NM- Coastal waters from Destin to Pensacola FL out 20 NM- Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM- Waters from Destin to Pensacola FL from 20 to 60 NM- 559 AM CDT Sun Apr 30 2017 This Hazardous Weather Outlook is for portions of the coastal waters of Alabama and northwest Florida. .DAY ONE...Today and Tonight Small craft advisories remain in effect through tonight as strong southerly flow and increased seas continue in advance of an approaching cold front. Severe thunderstorms will be possible this afternoon through early Monday as a storm system moves across the region. .DAYS TWO THROUGH SEVEN...Monday through Saturday Showers and thunderstorms are expected to return late Wednesday and Thursday as another storm system moves across the area. Increasing onshore flow could bring hazardous conditions for small craft again late Wednesday into Thursday.
Special Weather Statement
National Weather Service Mobile AL
1120 AM CDT SUN APR 30 2017
ALZ051-MSZ067-075-076-078-079-301715-
Choctaw AL-Perry MS-Stone MS-Greene MS-Wayne MS-George MS-
1120 AM CDT SUN APR 30 2017
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...GEORGE...PERRY...WAYNE...GREENE AND STONE COUNTIES UNTIL
1215 PM CDT...
At 1119 AM CDT, the strong thunderstorms were located along a line
extending from Goodwater to near Rock Hill to near Mcneil, and
moving northeast at 40 mph.
Half inch hail and winds of 40 to 50 mph will be possible with these
storms.
Locations impacted include...
Waynesboro, Wiggins, Lucedale, Richton, Leakesville, Clara,
Perkinston, McHenry, Beaumont, New Augusta, McLain, State Line and
Buckatunna.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
Additional statements will be issued as conditions warrant.
&&
A tornado watch remains in effect until 300 PM CDT for southeastern
Mississippi. A tornado watch also remains in effect until 700 PM CDT
for southwestern Alabama.
LAT...LON 3091 8934 3091 8914 3143 8915 3143 8894
3182 8894 3189 8848 3195 8847 3074 8842
3073 8888 3068 8889 3068 8924 3065 8925
3065 8934
TIME...MOT...LOC 1619Z 240DEG 34KT 3192 8889 3113 8930 3062 8968
ButtsSpecial Weather Statement
National Weather Service Mobile AL
1202 PM CDT SUN APR 30 2017
ALZ051-301800-
Choctaw AL-
1202 PM CDT SUN APR 30 2017
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...CHOCTAW COUNTY UNTIL 100 PM CDT...
At 1202 PM CDT, the strong thunderstorms were located along a line
extending from 6 miles southeast of York to 9 miles southwest of
Crandall, and moving northeast at 55 mph.
Winds in excess of 40 mph will be possible with these storms.
Locations impacted include...
Butler, Lisman, Pennington and Toxey.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
Additional statements will be issued as conditions warrant.
&&
A tornado watch remains in effect until 700 PM CDT for southwestern
Alabama.
LAT...LON 3231 8793 3228 8793 3230 8794 3230 8798
3228 8802 3218 8801 3214 8804 3211 8805
3209 8805 3207 8810 3205 8812 3201 8812
3198 8807 3196 8807 3197 8809 3195 8812
3193 8810 3186 8847 3231 8842
TIME...MOT...LOC 1702Z 237DEG 48KT 3242 8822 3186 8861
Butts2 coastal flood. Local standard time, as filed.
Minor coastal flooding occurred on the Highway 90 Causeway over Mobile Bay at the I-10 entrance and exit ramps. Tides were running 1.5 to 2 feet above normal during a spring tidal cyclone and occurred at the time of high tide at the Coast Guard Sector Mobile tidal gage.
Coastal flooding reported on the southbound lane of the Dauphin Island Parkway, just north of the Dog River Bridge. The right lane is impassable. Tides were running 1.5 to 2 feet above normal during a spring tidal cyclone and occurred at the time of high tide at the mouth of the Dog River.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alabama in 2017Every state in 2017This day in weather historyWarnings in Alabama, April 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 696389, 696381.