Alert archive / Alabama / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 137, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jun 12, 2021, 6:56 PM CDT for Covington County, Escambia County, Alabama; Okaloosa County, Florida. It was in force for 23 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
- Jun 12, 2021, 6:56 PM CDT (23:56 UTC)
- Expired
- Jun 12, 2021, 7:19 PM CDT
- In force
- 23 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Covington County, AL, Escambia County, AL, Okaloosa County, FL
The radar
The Eglin Afb radar (KEVX), 95 km from the middle of the area, began a volume at 23:56 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
Birmingham, AL (KBMX), launched 12:00Z, 11.9 hours before the alert went out and 234 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
- 2156 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 549 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.5
The text
As transmitted.
184
WUUS54 KMOB 122356
SVRMOB
ALC039-053-FLC091-130045-
/O.NEW.KMOB.SV.W.0137.210612T2356Z-210613T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
656 PM CDT Sat Jun 12 2021
The National Weather Service in Mobile has issued a
* Severe Thunderstorm Warning for...
Southeastern Escambia County in south central Alabama...
Southwestern Covington County in south central Alabama...
Northwestern Okaloosa County in northwestern Florida...
* Until 745 PM CDT.
* At 655 PM CDT, a severe thunderstorm was located 18 miles east of
East Brewton, or 18 miles east of Brewton, moving southeast at 10
mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will remain over mainly rural areas of
southeastern Escambia, southwestern Covington and northwestern
Okaloosa Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3100 8649 3085 8675 3092 8679 3100 8679
3100 8683 3110 8689 3119 8674 3119 8673
3118 8672 3119 8672 3119 8670 3120 8670
TIME...MOT...LOC 2355Z 325DEG 9KT 3110 8676
HAIL...0.75IN
WIND...60MPH
$$2 follow-up statements
089
WWUS54 KMOB 130013
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
713 PM CDT Sat Jun 12 2021
ALC039-053-FLC091-130045-
/O.CON.KMOB.SV.W.0137.000000T0000Z-210613T0045Z/
Escambia AL-Covington AL-Okaloosa FL-
713 PM CDT Sat Jun 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR SOUTHEASTERN ESCAMBIA...SOUTHWESTERN COVINGTON AND NORTHWESTERN
OKALOOSA COUNTIES...
At 713 PM CDT, a severe thunderstorm was located 13 miles west of
Laurel Hill, or 18 miles north of Crestview, moving southeast at 20
mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
This severe thunderstorm will remain over mainly rural areas of
southeastern Escambia, southwestern Covington and northwestern
Okaloosa Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3100 8649 3085 8675 3092 8679 3100 8679
3100 8683 3110 8689 3119 8674 3119 8673
3118 8672 3119 8672 3119 8670 3120 8670
TIME...MOT...LOC 0013Z 321DEG 17KT 3101 8668
HAIL...0.75IN
WIND...60MPH
$$556
WWUS54 KMOB 130019
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
719 PM CDT Sat Jun 12 2021
ALC039-053-FLC091-130028-
/O.CAN.KMOB.SV.W.0137.000000T0000Z-210613T0045Z/
Escambia AL-Covington AL-Okaloosa FL-
719 PM CDT Sat Jun 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ESCAMBIA...
SOUTHWESTERN COVINGTON AND NORTHWESTERN OKALOOSA COUNTIES IS
CANCELLED...
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.
LAT...LON 3100 8649 3085 8675 3092 8679 3100 8679
3100 8683 3110 8689 3119 8674 3119 8673
3118 8672 3119 8672 3119 8670 3120 8670
TIME...MOT...LOC 0016Z 325DEG 9KT 3100 8667
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 12:48 PM CDT | Special Marine Warning | MOB | 42 min | |
| Jun 12, 1:45 PM CDT | Special Marine Warning | MOB | 45 min | |
| Jun 12, 2:40 PM CDT | Special Weather Statement | MOB | Baldwin | 50 min |
| Jun 12, 3:23 PM CDT | Special Weather Statement | MOB | Crenshaw | 52 min |
| Jun 12, 4:34 PM CDT | Special Marine Warning | MOB | 41 min | |
| Jun 12, 4:49 PM CDT | Special Weather Statement | MOB | Covington | 41 min |
| Jun 12, 4:50 PM CDT | Special Weather Statement | MOB | Butler | 40 min |
| Jun 12, 5:33 PM CDT | Special Weather Statement | MOB | Conecuh | 42 min |
| Jun 12, 6:22 PM CDT | Special Weather Statement | MOB | Covington | 38 min |
| Jun 12, 1:41 PM CDT | Special Weather Statement | MOB | Okaloosa | 49 min |
| Jun 12, 1:44 PM CDT | Severe Thunderstorm Warning | MOB | Okaloosa | 29 min |
| Jun 12, 2:13 PM CDT | Special Weather Statement | MOB | Escambia | 47 min |
| Jun 12, 3:58 PM CDT | Special Weather Statement | MOB | Escambia, Santa Rosa | 62 min |
| Jun 12, 6:03 PM CDT | Special Weather Statement | MOB | Santa Rosa | 42 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2021Severe Thunderstorm Warnings in Florida, 2021Every severe thunderstorm warning in 2021
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.