Alert archive / Alabama / Tornado Warnings in 2010
Tornado Warning 21, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at May 21, 2010, 6:17 PM CDT for Clarke County, Washington County, Alabama. It was in force for 43 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
- May 21, 2010, 6:17 PM CDT (23:17 UTC)
- Expired
- May 21, 2010, 7:00 PM CDT
- In force
- 43 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Clarke County, AL, Washington County, AL
The radar
The Mobile radar (KMOB), 102 km from the middle of the area, began a volume at 23:19 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 |
|---|---|---|---|
| May 21, 11:50 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 11.3 hours before the alert went out and 204 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
- 1818 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 498 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.3
The text
As transmitted, in the capitals the NWS used until 2016.
469
WFUS54 KMOB 212317
TORMOB
ALC025-129-220000-
/O.NEW.KMOB.TO.W.0021.100521T2317Z-100522T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
617 PM CDT FRI MAY 21 2010
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* TORNADO WARNING FOR...
WEST CENTRAL CLARKE COUNTY IN SOUTHWEST ALABAMA...
NORTHEASTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...
* UNTIL 700 PM CDT
* AT 615 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO...NEAR BIGBEE...OR
ABOUT 12 MILES NORTHEAST OF CHATOM...MOVING SOUTHEAST AT 25 MPH.
* THE TORNADO WILL BE NEAR...
WAGARVILLE BY 645 PM CDT...
THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A
STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A ROOM SUCH AS
A CLOSET OR BATHROOM. IF POSSIBLE...GET UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY
AND ALWAYS STAY AWAY FROM WINDOWS.
TO REPORT ANY TORNADOES...FUNNEL CLOUDS...OR OTHER HAZARDOUS WEATHER
OBSERVATIONS TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL FREE AT 1 8
7 7 6 3 3 6 7 7 2.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FRIDAY
EVENING FOR SOUTHWESTERN ALABAMA.
LAT...LON 3169 8807 3148 8791 3138 8811 3159 8824
3168 8821
TIME...MOT...LOC 2317Z 332DEG 23KT 3160 8815
$$3 follow-up statements
008
WWUS54 KMOB 212329
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
629 PM CDT FRI MAY 21 2010
ALC025-129-220000-
/O.CON.KMOB.TO.W.0021.000000T0000Z-100522T0000Z/
WASHINGTON AL-CLARKE AL-
629 PM CDT FRI MAY 21 2010
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR WEST
CENTRAL CLARKE AND NORTHEASTERN WASHINGTON COUNTIES...
AT 624 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
TORNADO WAS NEAR TWO MILES SOUTH OF BIGBEE...OR ABOUT 10 MILES
NORTHEAST OF CHATOM...MOVING SOUTHEAST AT 15 MPH.
THE TORNADO WILL BE NEAR...
SAINT STEPHENS BY 650 PM CDT...
WAGARVILLE...LEROY AND 7 MILES WEST OF CARSON BY 700 PM CDT...
HEAVY RAINFALL MAY BE OBSCURING THIS TORNADO. TAKE COVER NOW! IF YOU
WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE
PLACE.
TO REPORT ANY TORNADOES...FUNNEL CLOUDS...OR OTHER HAZARDOUS WEATHER
OBSERVATIONS TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL FREE AT 1 8
7 7 6 3 3 6 7 7 2.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FRIDAY
EVENING FOR SOUTHWESTERN ALABAMA.
LAT...LON 3165 8820 3166 8807 3148 8791 3138 8811
3158 8823
TIME...MOT...LOC 2329Z 323DEG 12KT 3157 8814
$$788
WWUS54 KMOB 212343
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
643 PM CDT FRI MAY 21 2010
ALC025-212352-
/O.CAN.KMOB.TO.W.0021.000000T0000Z-100522T0000Z/
CLARKE AL-
643 PM CDT FRI MAY 21 2010
...THE TORNADO WARNING FOR WEST CENTRAL CLARKE COUNTY IS CANCELLED...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FRIDAY
EVENING FOR SOUTHWESTERN ALABAMA.
LAT...LON 3161 8818 3162 8811 3148 8792 3138 8811
3154 8820
TIME...MOT...LOC 2342Z 323DEG 12KT 3154 8811
$$
ALC129-220000-
/O.CON.KMOB.TO.W.0021.000000T0000Z-100522T0000Z/
WASHINGTON AL-
643 PM CDT FRI MAY 21 2010
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR CENTRAL
WASHINGTON COUNTY...
AT 637 PM CDT.... THIS CIRCULATION WAS NEAR SAINT STEPHENS...MOVING
SOUTHEAST AT 20 MPH.
THE TORNADO WILL BE NEAR...
SAINT STEPHENS BY 650 PM CDT...
WAGARVILLE...LEROY AND 7 MILES WEST OF CARSON BY 700 PM CDT...
HEAVY RAINFALL MAY BE OBSCURING THIS TORNADO. TAKE COVER NOW! IF YOU
WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE
PLACE.
TO REPORT ANY TORNADOES...FUNNEL CLOUDS...OR OTHER HAZARDOUS WEATHER
OBSERVATIONS TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL FREE AT 1 8
7 7 6 3 3 6 7 7 2.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FRIDAY
EVENING FOR SOUTHWESTERN ALABAMA.
LAT...LON 3161 8818 3162 8811 3148 8792 3138 8811
3154 8820
TIME...MOT...LOC 2342Z 323DEG 12KT 3154 8811
$$345
WWUS54 KMOB 212358
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
658 PM CDT FRI MAY 21 2010
ALC129-220008-
/O.EXP.KMOB.TO.W.0021.000000T0000Z-100522T0000Z/
WASHINGTON AL-
658 PM CDT FRI MAY 21 2010
...THE TORNADO WARNING FOR CENTRAL WASHINGTON COUNTY WILL EXPIRE AT
700 PM CDT...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FRIDAY
EVENING FOR SOUTHWESTERN ALABAMA.
LAT...LON 3161 8818 3162 8811 3148 8792 3138 8811
3154 8820
TIME...MOT...LOC 2358Z 180DEG 0KT 3155 8812
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 1:22 PM CDT | Severe Thunderstorm Warning | MOB | Mobile, Washington | 23 min |
| May 21, 3:14 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw | 30 min |
| May 21, 4:03 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw, Clarke | 57 min |
| May 21, 4:31 PM CDT | Tornado Warning | MOB | Choctaw, Clarke | 44 min |
| May 21, 4:54 PM CDT | Severe Thunderstorm Warning | MOB | Clarke | 36 min |
| May 21, 5:04 PM CDT | Tornado Warning | MOB | Clarke | 41 min |
| May 21, 5:30 PM CDT | Severe Thunderstorm Warning | MOB | Washington | 60 min |
| May 21, 5:31 PM CDT | Severe Thunderstorm Warning | MOB | Clarke | 59 min |
| May 21, 5:58 PM CDT | Tornado Warning | MOB | Clarke | 24 min |
| May 21, 6:31 PM CDT | Severe Thunderstorm Warning | MOB | Washington | 59 min |
Nearby
Tornado Warnings in Alabama, 2010Every tornado warning in 2010Tornadoes in 2010
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.