Alert archive / Alabama / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 29, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Jan 21, 2017, 9:21 AM CST for Covington County, Alabama. It was in force for 39 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
- Jan 21, 2017, 9:21 AM CST (15:21 UTC)
- Expired
- Jan 21, 2017, 10:00 AM CST
- In force
- 39 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Covington County, AL
The radar
The Eglin Afb radar (KEVX), 73 km from the middle of the area, began a volume at 15:21 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 21, 3:56 AM CST | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 3.4 hours before the alert went out and 212 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
- 352 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 613 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.0
The text
As transmitted.
652
WUUS54 KMOB 211521
SVRMOB
ALC039-211600-
/O.NEW.KMOB.SV.W.0029.170121T1521Z-170121T1600Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
921 AM CST SAT JAN 21 2017
The National Weather Service in Mobile has issued a
* Severe Thunderstorm Warning for...
Southeastern Covington County in south central Alabama...
* Until 1000 AM CST
* At 921 AM CST, a severe thunderstorm was located near Lockhart, or
near Florala, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Opp, Florala and Lockhart.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
A tornado watch remains in effect until 1100 AM CST for south central
Alabama...and northwestern Florida.
LAT...LON 3099 8649 3101 8657 3131 8628 3128 8619
3099 8619
TIME...MOT...LOC 1521Z 285DEG 29KT 3110 8634
HAIL...<.75IN
WIND...60MPH
$$1 follow-up statement
964
WWUS54 KMOB 211557
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
957 AM CST SAT JAN 21 2017
ALC039-211607-
/O.EXP.KMOB.SV.W.0029.000000T0000Z-170121T1600Z/
Covington AL-
957 AM CST SAT JAN 21 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN COVINGTON COUNTY
WILL EXPIRE AT 1000 AM CST...
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire.
A tornado watch remains in effect until 1100 AM CST for south central
Alabama...and northwestern Florida.
LAT...LON 3099 8649 3101 8657 3131 8628 3128 8619
3099 8619
TIME...MOT...LOC 1557Z 285DEG 29KT 3103 8602
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 20, 8:47 PM CST | River Flood Warning | MOB | Escambia | 25 hr |
| Jan 20, 8:48 PM CST | River Flood Warning | MOB | Covington, Escambia | 3 days |
| Jan 20, 10:18 PM CST | Rip Current Statement | MOB | Baldwin, Mobile | 56 hr |
| Jan 21, 1:56 AM CST | Special Weather Statement | MOB | Clarke | 34 min |
| Jan 21, 2:16 AM CST | Special Weather Statement | MOB | Clarke | 44 min |
| Jan 21, 2:31 AM CST | Severe Thunderstorm Warning | MOB | Clarke, Monroe, Wilcox | 44 min |
| Jan 21, 3:12 AM CST | Special Weather Statement | MOB | Wilcox | 48 min |
| Jan 21, 3:37 AM CST | Special Weather Statement | MOB | Choctaw | 38 min |
| Jan 21, 4:24 AM CST | Tornado Warning | MOB | Choctaw, Washington | 51 min |
| Jan 21, 4:52 AM CST | Tornado Warning | MOB | Choctaw | 38 min |
| Jan 21, 5:06 AM CST | Tornado Warning | MOB | Choctaw, Clarke | 39 min |
| Jan 21, 5:45 AM CST | Severe Thunderstorm Warning | MOB | Clarke, Wilcox | 34 min |
| Jan 21, 7:02 AM CST | Tornado Warning | MOB | Mobile | 22 min |
| Jan 21, 7:07 AM CST | Special Weather Statement | MOB | Conecuh | 38 min |
| Jan 21, 7:22 AM CST | Severe Thunderstorm Warning | MOB | Baldwin, Mobile | 38 min |
| Jan 21, 7:28 AM CST | Wind Advisory | MOB | Baldwin, Mobile | 4 hr |
| Jan 21, 7:32 AM CST | Special Marine Warning | MOB | 58 min | |
| Jan 21, 7:36 AM CST | Special Weather Statement | MOB | Conecuh, Escambia, Monroe | 54 min |
| Jan 21, 8:18 AM CST | Severe Thunderstorm Warning | MOB | Butler, Conecuh, Covington, Crenshaw | 42 min |
| Jan 21, 8:27 AM CST | Special Marine Warning | MOB | 63 min | |
| Jan 21, 9:14 AM CST | Special Weather Statement | MOB | Covington | 91 min |
| Jan 21, 9:28 AM CST | Special Marine Warning | MOB | 92 min | |
| Jan 21, 10:57 AM CST | Special Marine Warning | MOB | 48 min | |
| Jan 21, 3:50 PM CST | Gale Warning | MOB | 41 hr |
Nearby
Severe Thunderstorm Warnings in Alabama, 2017Every severe thunderstorm warning in 2017
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.