Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 171, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Aug 3, 2012, 5:12 PM CDT for Washington County, Alabama; Greene County, Wayne County, Mississippi. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 3, 2012, 5:12 PM CDT (22:12 UTC)
- Expired
- Aug 3, 2012, 5:32 PM CDT
- In force
- 20 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Washington County, AL, Greene County, MS, Wayne County, MS
The radar
The Mobile radar (KMOB), 82 km from the middle of the area, began a volume at 22:15 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.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 10.2 hours before the alert went out and 179 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
- 4172 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 508 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -74 m²/s²
- 0-3 km storm-relative helicity
- -37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
676 WUUS54 KMOB 032212 SVRMOB ALC129-MSC041-153-032245- /O.NEW.KMOB.SV.W.0171.120803T2212Z-120803T2245Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 512 PM CDT FRI AUG 3 2012 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI... SOUTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI... WEST CENTRAL WASHINGTON COUNTY IN SOUTHWEST ALABAMA... * UNTIL 545 PM CDT * AT 511 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS NEAR 60 MPH WAS LOCATED 12 MILES WEST OF CHATOM...OR NEAR STATE LINE MISSISSIPPI...MOVING SOUTHEAST AT 10 MPH. * LOCATIONS IMPACTED INCLUDE... STATE LINE... FRUITDALE... LAT...LON 3142 8826 3126 8847 3141 8857 3152 8843 TIME...MOT...LOC 2211Z 310DEG 8KT 3141 8843 $$
2 follow-up statements
395 WWUS54 KMOB 032224 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 524 PM CDT FRI AUG 3 2012 MSC153-032233- /O.CAN.KMOB.SV.W.0171.000000T0000Z-120803T2245Z/ WAYNE MS- 524 PM CDT FRI AUG 3 2012 ...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN WAYNE COUNTY... AT 515 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTHEASTERN WAYNE COUNTY HAS MOVED SOUTHWARD AND OUT OF THE COUNTY...THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED. LAT...LON 3148 8836 3142 8826 3126 8847 3138 8855 TIME...MOT...LOC 2223Z 310DEG 8KT 3138 8840 $$ ALC129-MSC041-032245- /O.CON.KMOB.SV.W.0171.000000T0000Z-120803T2245Z/ WASHINGTON AL-GREENE MS- 524 PM CDT FRI AUG 3 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR NORTHEASTERN GREENE AND WEST CENTRAL WASHINGTON COUNTIES... AT 515 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS TO NEAR 60 MPH WAS LOCATED 11 MILES SOUTHWEST OF CHATOM...OR 3 MILES NORTH OF FRUITDALE...MOVING SOUTHEAST AT 10 MPH. LOCATIONS IMPACTED INCLUDE... FRUITDALE... LAT...LON 3148 8836 3142 8826 3126 8847 3138 8855 TIME...MOT...LOC 2223Z 310DEG 8KT 3138 8840 $$
895 WWUS54 KMOB 032232 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 532 PM CDT FRI AUG 3 2012 ALC129-MSC041-032242- /O.CAN.KMOB.SV.W.0171.000000T0000Z-120803T2245Z/ WASHINGTON AL-GREENE MS- 532 PM CDT FRI AUG 3 2012 ...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR NORTHEASTERN GREENE AND WEST CENTRAL WASHINGTON COUNTIES... AT 532 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHEASTERN GREENE AND WEST CENTRAL WASHINGTON COUNTIES HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED. THE STORMS OVER GREENE AND WASHINGTON COUNTIES ARE STILL CAPABLE OF PRODUCING WIND GUSTS AROUND 40 MPH...SMALL HAIL TO THE SIZE OF DIMES...AND DANGEROUS CLOUD TO GROUND LIGHTNING STRIKES. SOME MINOR FLOODING OF POOR DRAINAGE AREAS IS ALSO POSSIBLE AS THE STORMS CONTINUE TO WEAKEN. LAT...LON 3148 8836 3142 8826 3126 8847 3138 8855 TIME...MOT...LOC 2232Z 310DEG 8KT 3137 8838 $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 3:22 PM CDT | Areal Flood Advisory | MOB | Mobile | 113 min |
| Aug 3, 3:33 PM CDT | Severe Thunderstorm Warning | MOB | Mobile | 42 min |
| Aug 3, 4:20 PM CDT | Severe Thunderstorm Warning | MOB | Covington | 25 min |
| Aug 3, 4:40 PM CDT | Severe Thunderstorm Warning | MOB | Butler, Conecuh | 35 min |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2012Severe Thunderstorm Warnings in Alabama, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.