Thunderstorms moved across southwest Alabama produced high winds that caused damage.
Every event with a place to put it. Tap one for its entry below.
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.
Thunderstorms moved across southwest Alabama produced high winds that caused damage.
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 May 12, 10:47 AM CST, 1 hour 7 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Mobile AL 1147 AM CDT Fri May 12 2017 .DISCUSSION...See updated information below. && .UPDATE...Regional radar mosaic detecting a wide band of showers and thunderstorms across the southeast portions of Mississippi and Louisiana moving east at around 45 mph. The leading edge moving into southwest Alabama through early afternoon will move into south central Alabama and the western Florida panhandle mid afternoon. Strong to severe thunderstorms are occurring with this line, and Severe Thunderstorm Watch 212 is in effect for Perry, Greene, Stone, and George counties in SE MS, Mobile, Baldwin, and Escambia counties in SW AL, and Escambia, Santa Rosa, and Okaloosa counties in the western Florida panhandle through 4 PM CDT. The Severe Thunderstorm Watch also includes the adjacent gulf waters, including area bays and sounds. Both the NAM and GFS models have slightly lower MLCape values ranging from 900 to 1200 J/KG, most likely due to the increased cloud cover ahead of the line helping to limit insolation and therefore instability. Surface-1KM Storm Relative Helicity values are also lower ahead of the initial line, ranging from 75 to 130 m2/s2. Bulk Shear continues to reside in the 40 to 50 knot range. This environment however is still supportive of some damaging thunderstorm wind gusts and isolated brief tornadoes in the watch area. Marginal severe hail is also possible. Updates sent. /22 && .PREV DISCUSSION... /issued 627 AM CDT Fri May 12 2017/ DISCUSSION...Updated for latest aviation discussion below. AVIATION... 12Z issuance...Patchy fog over south central Alabama and the western Florida panhandle will dissipate by mid morning. Showers and storms approaching from the west will move through the area during the late morning through the early evening hours with IFR to MVFR conditions in the convection along with gusty winds. A cold front meanwhile approaches from the west and moves through most of the area late tonight. Light southerly winds increase to 10-15 knots by midday then diminish this evening, becoming westerly as the front moves through. /29 PREV DISCUSSION... /issued 347 AM CDT Fri May 12 2017/ NEAR TERM /Now Through Friday night/...An upper trof located near the ArkLaTex weakens somewhat while advancing into the central Gulf coast states overnight, with an associated surface low moving across the region which brings a cold front into the central portion of the forecast area late tonight. A split upper jet structure currently in place within the eastern portion of the upper trof gradually transitions to a single jet maximum over the north central Gulf. Upper level divergence associated with this pattern is currently favoring a broken line of convection from northwest Mississippi to western Louisiana ahead of the advancing cold front. As the front continues to advance eastward, the best deep layer lift will shift into southeast Mississippi/extreme southwest Alabama through this morning, then spreads across the remainder of the forecast area this afternoon into early this evening, with a gradual weakening trend beginning late this afternoon due to the evolving jet structure. Will have pops increasing to likely/categorical for most of the area this afternoon with likely pops this evening which taper off overnight as the best deep layer lift shifts east of the area and the front moves into the area. MLCape values increase to 1200-1500 J/kg during the day, but with wet bulb zero values near 11 kft and shear values relatively limited, continue to see this environment of more supportive of some strong storms mainly during the afternoon including a possible isolated severe storm. Rainfall amounts through the period will range from around a half inch well inland to around an inch closer to the coast. Considered issuance of a High Risk of Rip currents for today given an increasing onshore flow, but other contributing factors such as onshore swell look too marginal at this time and have gone with a moderate risk through tonight. /29 SHORT TERM /Saturday Through Sunday night/...A cold front moves across the area from west to east Saturday morning as the surface low passes moves into southern Georgia. While the heaviest rain tapers from west to east with the passage of this front, model guidance does suggest a few wrap-around showers lingering over southeast Mississippi and southern Alabama into the afternoon hours. Any accumulations with these showers would be light as northerly winds begin to usher in drier air. Northerly winds then relax and become more variable Sunday as high pressure moves over the area both at the surface and aloft, keeping skies mostly clear and allowing temperatures to rebound quickly despite the recent frontal passage. As such, expect afternoon highs Saturday in the low to mid 80's, followed by mid to upper 80's Sunday. Low temps Saturday and Sunday nights will range from upper 50's inland to low to mid 60's along the coast. /49 LONG TERM /Monday Through Thursday/...Light onshore flow redevelops by Tuesday as the upper-level ridge pushes east and surface high pressure builds over the western Atlantic. Subsidence beneath the back edge of this ridge will continue to maintain rainfree skies through Tuesday. By Wednesday, however, mid- and upper-level southwesterly flow ahead of a deepening High Plains trof will combine with increasing onshore surface winds to return deep-layer moisture to the area, leading to a subsequent bump in daily shower and thunderstorm chances through midweek. Temps will continue to run warm through the long term, with highs in the upper 80's to lower 90's inland and mid 80's along the coast each afternoon. Lows become gradually milder as the week progresses and deep-layer moisture increases, with temps in the low to mid 60's Monday night becoming mid to upper 60's by Wednesday night. /49 MARINE...A moderate southerly flow becomes moderate to occasionally strong this afternoon as a cold front approaches from the west. The front moves across the marine area late tonight into early Saturday morning with a moderate northwesterly flow in the wake of the front. Will have Small Craft Exercise Caution for most of the marine area today. Winds and seas will be higher near storms along and ahead of the front, mainly this afternoon into this evening. A light southerly flow is reestablished Sunday into Monday as high pressure shifts across the area. /29 && .MOB WATCHES/WARNINGS/ADVISORIES... AL...None. FL...None. MS...None. GM...None. && This product is also available on the web at: http://weather.gov/mob
Hazardous Weather Outlook National Weather Service Mobile AL 327 AM CDT Fri May 12 2017 ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-130830- 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- 327 AM CDT Fri May 12 2017 This Hazardous Weather Outlook is for portions of south central Alabama...southwest Alabama...northwest Florida and southeast Mississippi. .DAY ONE...Today and Tonight A few strong storms are possible mainly this afternoon ahead of a cold front approaching from the west. An isolated severe storm cannot be ruled out. Brief, locally heavy rainfall may accompany the stronger storms. There is a moderate risk of rip currents along area beaches through tonight. .DAYS TWO THROUGH SEVEN...Saturday through Thursday There is a moderate risk of rip currents along area beaches on Saturday. .SPOTTER INFORMATION STATEMENT... Activation of SkyWarn severe spotter networks is not expected through Thursday. GMZ630>635-650-655-670-675-130830- 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- 327 AM CDT Fri May 12 2017 This Hazardous Weather Outlook is for portions of the coastal waters of Alabama and northwest Florida. .DAY ONE...Today and Tonight Moderate to occasionally strong winds may create hazardous conditions for small craft mainly this afternoon through tonight. .DAYS TWO THROUGH SEVEN...Saturday through Thursday No hazardous weather is expected at this time.
Special Weather Statement
National Weather Service Mobile AL
1027 AM CDT FRI MAY 12 2017
MSZ078-079-121615-
Stone MS-George MS-
1027 AM CDT FRI MAY 12 2017
...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
SOUTHWESTERN GEORGE AND EASTERN STONE COUNTIES UNTIL 1115 AM CDT...
At 1026 AM CDT, the strong thunderstorm was located 8 miles east of
Saucier, or 14 miles north of Biloxi, moving northeast at 25 mph.
Winds in excess of 40 mph will be possible with this storm.
This storm will remain over mainly rural areas of southwestern George
and eastern Stone Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm 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.
&&
LAT...LON 3091 8896 3091 8889 3074 8865 3073 8888
3068 8889 3068 8908
TIME...MOT...LOC 1526Z 218DEG 22KT 3062 8899Special Weather Statement
National Weather Service Mobile AL
1048 AM CDT FRI MAY 12 2017
MSZ067-121630-
Wayne MS-
1048 AM CDT FRI MAY 12 2017
...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...WAYNE
COUNTY UNTIL 1130 AM CDT...
At 1048 AM CDT, the strong thunderstorm was located 7 miles west of
Clara, or 13 miles southwest of Waynesboro, moving northeast at 50
mph.
Half inch hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Waynesboro, Clara and Buckatunna.
A severe thunderstorm watch remains in effect until 400 PM CDT for
southeastern Mississippi.
LAT...LON 3165 8894 3180 8882 3189 8847 3144 8845
3143 8894
TIME...MOT...LOC 1548Z 225DEG 44KT 3155 8882Special Weather Statement
National Weather Service Mobile AL
1121 AM CDT FRI MAY 12 2017
ALZ052-053-261-263-MSZ076-079-121715-
Clarke AL-Washington AL-Mobile Central AL-Mobile Inland AL-Greene MS-
George MS-
1121 AM CDT FRI MAY 12 2017
...A STRONG THUNDERSTORM WILL AFFECT THE FOLLOWING COUNTIES...
NORTHERN MOBILE...SOUTHERN WASHINGTON...SOUTHERN CLARKE...EASTERN
GEORGE AND EASTERN GREENE COUNTIES UNTIL 1215 PM CDT...
At 1120 AM CDT, the strong thunderstorm was located near Lucedale,
moving northeast at 30 mph.
Winds in excess of 40 mph will be possible with this storm.
Locations impacted include...
Saraland, Satsuma, Citronelle, Lucedale, Creola, Leakesville,
Chunchula, Gulfcrest, Deer Park, Axis, Calvert, Mount Vernon, Semmes,
Fruitdale, McIntosh, Wilmer and Movico.
A severe thunderstorm watch remains in effect until 400 PM CDT for
southwestern Alabama...and southeastern Mississippi.
LAT...LON 3074 8841 3073 8863 3134 8859 3137 8793
3112 8794 3109 8797 3107 8796 3107 8795
3090 8796 3088 8798 3088 8797 3087 8798
3087 8797 3086 8798 3086 8797 3085 8796
3073 8841
TIME...MOT...LOC 1620Z 217DEG 27KT 3084 8852PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
1206 PM CDT FRI MAY 12 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1136 AM TSTM WND DMG NNE MCHENRY 30.71N 89.14W
05/12/2017 STONE MS EMERGENCY MNGR
TREES DOWN REPORTED IN MCHENRY. TIME ESTIMATED BY RADAR.
&&
DJOHNSONSpecial Weather Statement National Weather Service Mobile AL 1246 PM CDT FRI MAY 12 2017 ALZ053-055-056-059-060-261-262-FLZ201-203>205-121845- Clarke AL-Baldwin Inland AL-Monroe AL-Conecuh AL-Covington AL- Escambia AL-Mobile Inland AL-Escambia Inland FL-Okaloosa Inland FL- Santa Rosa Coastal FL-Santa Rosa Inland FL- 1246 PM CDT FRI MAY 12 2017 ...STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING COUNTIES...MONROE...NORTHEASTERN MOBILE...NORTHWESTERN BALDWIN... SOUTHEASTERN CLARKE...ESCAMBIA...SOUTHERN CONECUH...SOUTHWESTERN COVINGTON...NORTHWESTERN OKALOOSA...SANTA ROSA AND NORTHWESTERN ESCAMBIA COUNTIES UNTIL 145 PM CDT... At 1245 PM CDT, an area of strong thunderstorms was located along a line extending from 12 miles east of Calvert to 9 miles south of Jay,and moving northeast at 50 mph. Winds in excess of 40 mph will be possible with these storms. Locations impacted include... Bay Minette, Atmore, Pace, Milton, Monroeville, Brewton, Evergreen, Century, Flomaton, Bagdad, Frisco City, Stockton, McCullough, Peterman, East Brewton, Uriah, Molino, Castleberry, Excel and Jay. A severe thunderstorm watch remains in effect until 400 PM CDT for south central and southwestern Alabama...and northwestern Florida. LAT...LON 3054 8707 3102 8798 3182 8760 3112 8646 TIME...MOT...LOC 1745Z 243DEG 42KT 3122 8781 3082 8719
The Mobile radar (KMOB), 14 km away, was scanning. The volume nearest the first event began at 17:54 UTC.
4 thunderstorm wind. Local standard time, as filed.
Winds estimated at 60 mph downed trees on a house.
Winds estimated at 60 mph downed trees on Highway 45.
Winds estimated at 60 mph trees and damaged roofs around Bay Minette.
Winds estimated at 70 mph downed multiple trees. Several fences and roofs were also damaged.
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, May 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 2026-09-24. Each event’s entry at NCEI: 702133, 702134, 702135, 702136.