Alert archive / Alabama / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 191, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Aug 19, 2021, 7:38 PM CDT for Clarke County, Washington County, Alabama. It was in force for 52 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 19, 2021, 7:38 PM CDT (00:38 UTC)
- Expired
- Aug 19, 2021, 8:30 PM CDT
- In force
- 52 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Clarke County, AL, Washington County, AL
The radar
The Mobile radar (KMOB), 109 km from the middle of the area, began a volume at 00:38 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 00:00Z, 0.6 hours before the alert went out and 206 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
- 409 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 812 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
916
WUUS54 KMOB 200038
SVRMOB
ALC025-129-200130-
/O.NEW.KMOB.SV.W.0191.210820T0038Z-210820T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
738 PM CDT Thu Aug 19 2021
The National Weather Service in Mobile has issued a
* Severe Thunderstorm Warning for...
Northeastern Washington County in southwestern Alabama...
Central Clarke County in southwestern Alabama...
* Until 830 PM CDT.
* At 738 PM CDT, severe thunderstorms were located along a line
extending from near Grove Hill to 5 miles east of Millry, and are
nearly stationary.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Jackson, Grove Hill, Saint Stephens, Leroy, Whatley and Fulton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3150 8762 3142 8820 3169 8832 3170 8828
3170 8809 3174 8809 3183 8774
TIME...MOT...LOC 0038Z 102DEG 2KT 3167 8777 3162 8822
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MM2 follow-up statements
374
WWUS54 KMOB 200057
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
757 PM CDT Thu Aug 19 2021
ALC025-129-200130-
/O.CON.KMOB.SV.W.0191.000000T0000Z-210820T0130Z/
Washington AL-Clarke AL-
757 PM CDT Thu Aug 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR NORTHEASTERN WASHINGTON AND CENTRAL CLARKE COUNTIES...
At 757 PM CDT, severe thunderstorms were located along a line
extending from Whatley to 7 miles northwest of Saint Stephens, and
are nearly stationary.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Jackson, Grove Hill, Saint Stephens, Leroy, Whatley and Fulton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3150 8762 3142 8820 3163 8824 3166 8824
3170 8811 3170 8809 3171 8809 3171 8808
3173 8800 3180 8773
TIME...MOT...LOC 0057Z 262DEG 3KT 3167 8770 3162 8815
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MM491
WWUS54 KMOB 200121
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
821 PM CDT Thu Aug 19 2021
ALC025-129-200131-
/O.EXP.KMOB.SV.W.0191.000000T0000Z-210820T0130Z/
Washington AL-Clarke AL-
821 PM CDT Thu Aug 19 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WASHINGTON AND
CENTRAL CLARKE COUNTIES WILL EXPIRE AT 830 PM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with these thunderstorms.
LAT...LON 3150 8762 3142 8820 3163 8824 3166 8824
3170 8811 3170 8809 3171 8809 3171 8808
3173 8800 3180 8773
TIME...MOT...LOC 0121Z 102DEG 2KT 3167 8771 3162 8816
$$
MMThe office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 7:46 PM CDT | Areal Flood Advisory | MOB | Choctaw, Clarke, Washington | 3 hr |
| Aug 19, 8:19 PM CDT | Special Weather Statement | MOB | Clarke | 56 min |
| Aug 19, 8:35 PM CDT | Flash Flood Warning | MOB | Choctaw, Clarke, Washington | 3 hr |
| Aug 19, 8:52 PM CDT | Areal Flood Advisory | MOB | Clarke | 3 hr |
| Aug 20, 12:38 PM CDT | Special Marine Warning | MOB | 82 min | |
| Aug 20, 12:42 PM CDT | Special Weather Statement | MOB | Baldwin | 48 min |
| Aug 20, 2:39 PM CDT | Special Marine Warning | MOB | 96 min | |
| Aug 20, 2:40 PM CDT | Areal Flood Advisory | MOB | Escambia | 3 hr |
| Aug 20, 3:08 PM CDT | Areal Flood Advisory | MOB | Baldwin, Escambia, Monroe | 112 min |
| Aug 20, 3:21 PM CDT | Areal Flood Advisory | MOB | Conecuh, Escambia | 114 min |
| Aug 20, 3:41 PM CDT | Areal Flood Advisory | MOB | Clarke, Washington | 2 hr |
| Aug 20, 4:19 PM CDT | Severe Thunderstorm Warning | MOB | Mobile | 41 min |
| Aug 20, 4:27 PM CDT | Areal Flood Advisory | MOB | Clarke, Monroe | 2 hr |
| Aug 20, 5:23 PM CDT | Areal Flood Advisory | MOB | Mobile | 4 hr |
| Aug 20, 6:02 PM CDT | Areal Flood Advisory | MOB | Mobile | 3 hr |
| Aug 20, 6:12 PM CDT | Special Marine Warning | MOB | 48 min | |
| Aug 20, 6:47 PM CDT | Areal Flood Advisory | MOB | Baldwin | 3 hr |
Nearby
Severe Thunderstorm Warnings in Alabama, 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.