Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 87, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at May 31, 2012, 4:40 PM CDT for Washington County, Alabama; Wayne County, Mississippi. It was in force for 50 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 31, 2012, 4:40 PM CDT (21:40 UTC)
- Expired
- May 31, 2012, 5:30 PM CDT
- In force
- 50 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Washington County, AL, Wayne County, MS
The radar
The Mobile radar (KMOB), 104 km from the middle of the area, began a volume at 21:42 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 31, 4:50 PM CDT | HAIL 1 | Buckatunna, MS | BUCKATUNNA BUILDING SUPPLY STORE REPORTED QUARTER SIZE HAIL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 31, 2:53 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 9.7 hours before the alert went out and 172 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1744 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 674 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
504 WUUS54 KMOB 312140 SVRMOB ALC129-MSC153-312230- /O.NEW.KMOB.SV.W.0087.120531T2140Z-120531T2230Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 440 PM CDT THU MAY 31 2012 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI... NORTHWESTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA... * UNTIL 530 PM CDT * AT 437 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 15 MILES SOUTHEAST OF WAYNESBORO...OR 4 MILES NORTHWEST OF STATE LINE...AND MOVING NORTH AT 20 MPH. * LOCATIONS IMPACTED INCLUDE... WAYNESBORO... STATE LINE... BUCKATUNNA... PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. PREPARE FOR DESTRUCTIVE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. TO REPORT SEVERE WEATHER...CALL (800) 284-9059. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT THURSDAY EVENING FOR SOUTHEAST MISSISSIPPI. && LAT...LON 3169 8836 3143 8833 3144 8856 3171 8876 TIME...MOT...LOC 2140Z 164DEG 17KT 3150 8851 $$
2 follow-up statements
513 WWUS54 KMOB 312155 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 455 PM CDT THU MAY 31 2012 ALC129-MSC153-312230- /O.CON.KMOB.SV.W.0087.000000T0000Z-120531T2230Z/ WASHINGTON AL-WAYNE MS- 455 PM CDT THU MAY 31 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR SOUTHEASTERN WAYNE AND NORTHWESTERN WASHINGTON COUNTIES... AT 450 PM CDT...THE PUBLIC REPORTED QUARTER SIZED HAIL IN BUCKATUNNA. AT 455 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE CONTINUING TO MONITOR A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OVER 60 MPH NEAR BUCKATUNNA... OR ABOUT 11 MILES SOUTHEAST OF WAYNESBORO...MOVING NORTH AT 20 MPH. LOCATIONS IMPACTED INCLUDE... U.S. HIGHWAY 45 SOUTHEAST OF WAYNESBORO...STATE LINE...AND BUCKATUNNA. PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS ALSO OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. TO REPORT SEVERE WEATHER...CALL (800) 284-9059. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT THURSDAY EVENING FOR SOUTHEAST MISSISSIPPI. && LAT...LON 3169 8836 3143 8833 3144 8856 3171 8876 TIME...MOT...LOC 2152Z 164DEG 17KT 3155 8853 $$
722 WWUS54 KMOB 312228 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 528 PM CDT THU MAY 31 2012 ALC129-MSC153-312238- /O.EXP.KMOB.SV.W.0087.000000T0000Z-120531T2230Z/ WASHINGTON AL-WAYNE MS- 528 PM CDT THU MAY 31 2012 ...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO EXPIRE FOR SOUTHEASTERN WAYNE AND NORTHWESTERN WASHINGTON COUNTIES... AT 528 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTHEASTERN WAYNE AND NORTHWESTERN WASHINGTON COUNTIES HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE AT 530 PM CDT. TO REPORT SEVERE WEATHER...CALL (800) 284-9059. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT THURSDAY EVENING FOR SOUTHEAST MISSISSIPPI. LAT...LON 3169 8836 3143 8833 3144 8856 3171 8876 TIME...MOT...LOC 2228Z 164DEG 17KT 3171 8859 $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 7:15 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw | 60 min |
| May 31, 3:02 PM CDT | Severe Thunderstorm Warning | MOB | Butler | 58 min |
| May 31, 5:05 PM CDT | Severe Thunderstorm Warning | MOB | Clarke, Washington | 40 min |
| May 31, 5:59 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw | 46 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2012Severe Thunderstorm Warnings in Mississippi, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.