Alert archive / Alabama / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 141, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Apr 22, 2017, 6:18 PM CDT for Choctaw County, Alabama. It was in force for 47 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
- Apr 22, 2017, 6:18 PM CDT (23:18 UTC)
- Expired
- Apr 22, 2017, 7:05 PM CDT
- In force
- 47 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
County Choctaw County, AL
The radar
The Jackson/Brandon,MS radar (KDGX), 163 km from the middle of the area, began a volume at 23:21 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 nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 11.3 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
- 23 J/kg
- Mixed-layer CIN
- -257 J/kg
- Mixed-layer LCL
- 919 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
775 WUUS54 KMOB 222318 SVRMOB ALC023-230015- /O.NEW.KMOB.SV.W.0141.170422T2318Z-170423T0015Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Mobile AL 618 PM CDT SAT APR 22 2017 The National Weather Service in Mobile has issued a * Severe Thunderstorm Warning for... Northwestern Choctaw County in southwestern Alabama... * Until 715 PM CDT * At 618 PM CDT, a severe thunderstorm was located over Increase, or 12 miles southeast of Meridian, moving southeast at 25 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Butler and Lisman. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Large hail and damaging winds and continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. && LAT...LON 3231 8808 3197 8825 3208 8845 3231 8842 TIME...MOT...LOC 2318Z 298DEG 22KT 3227 8855 HAIL...0.88IN WIND...60MPH $$
2 follow-up statements
143 WWUS54 KMOB 222348 SVSMOB Severe Weather Statement National Weather Service Mobile AL 648 PM CDT SAT APR 22 2017 ALC023-230015- /O.CON.KMOB.SV.W.0141.000000T0000Z-170423T0015Z/ Choctaw AL- 648 PM CDT SAT APR 22 2017 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR NORTHWESTERN CHOCTAW COUNTY... At 647 PM CDT, a severe thunderstorm was located near Lisman, or 10 miles northwest of Butler, moving east at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Butler and Lisman. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3231 8808 3197 8825 3208 8845 3231 8842 TIME...MOT...LOC 2347Z 291DEG 24KT 3219 8835 HAIL...<.75IN WIND...60MPH $$
974
WWUS54 KMOB 230005
SVSMOB
Severe Weather Statement
National Weather Service Mobile AL
705 PM CDT SAT APR 22 2017
ALC023-230014-
/O.CAN.KMOB.SV.W.0141.000000T0000Z-170423T0015Z/
Choctaw AL-
705 PM CDT SAT APR 22 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHOCTAW COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning has been cancelled.
LAT...LON 3231 8808 3197 8825 3208 8845 3231 8842
TIME...MOT...LOC 0001Z 298DEG 22KT 3214 8824
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 3:10 AM CDT | Dense Fog Advisory | MOB | Butler, Conecuh, Covington, Crenshaw, Escambia | 6 hr |
| Apr 22, 6:10 PM CDT | Special Weather Statement | MOB | Choctaw | 65 min |
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.