Alert archive / Alabama / Tornado Warnings in 2010
Tornado Warning 17, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at May 21, 2010, 4:31 PM CDT for Choctaw County, Clarke County, Alabama. It was in force for 44 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 21, 2010, 4:31 PM CDT (21:31 UTC)
- Expired
- May 21, 2010, 5:15 PM CDT
- In force
- 44 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Choctaw County, AL, Clarke County, AL
The radar
The Mobile radar (KMOB), 131 km from the middle of the area, began a volume at 21:34 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 21, 4:55 PM CDT | HAIL 1.75 | West Bend, AL | |
| May 21, 5:05 PM CDT | HAIL 1 | 3 E Coffeeville, AL | |
| May 21, 5:20 PM CDT | FUNNEL CLOUD | 7 E Coffeeville, AL |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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
Birmingham, AL (KBMX), launched 12:00Z, 9.5 hours before the alert went out and 190 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
- 611 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 515 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 189 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
460 WFUS54 KMOB 212131 TORMOB ALC023-025-212215- /O.NEW.KMOB.TO.W.0017.100521T2131Z-100521T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MOBILE AL 431 PM CDT FRI MAY 21 2010 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * TORNADO WARNING FOR... SOUTHEAST CHOCTAW COUNTY IN SOUTHWEST ALABAMA... NORTHWEST CLARKE COUNTY IN SOUTHWEST ALABAMA... * UNTIL 515 PM CDT * AT 429 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR WOMACK HILL...OR ABOUT 16 MILES SOUTH OF BUTLER...MOVING EAST AT 20 MPH. * THE TORNADO MOVE BE NEAR... WEST BEND BY 440 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 3189 8791 3172 8795 3181 8822 3190 8824 TIME...MOT...LOC 2130Z 292DEG 17KT 3186 8817 $$
2 follow-up statements
808 WWUS54 KMOB 212143 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 443 PM CDT FRI MAY 21 2010 ALC023-025-212215- /O.CON.KMOB.TO.W.0017.000000T0000Z-100521T2215Z/ CLARKE AL-CHOCTAW AL- 443 PM CDT FRI MAY 21 2010 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR SOUTH CENTRAL CHOCTAW AND WEST CENTRAL CLARKE COUNTIES... AT 442 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS TORNADO WAS NEAR WEST BEND...OR ABOUT 19 MILES SOUTH OF BUTLER... MOVING EAST AT 20 MPH. THE TORNADO WILL BE NEAR... RURAL WESTERN CLARKE COUNTY AT 500 PM CDT THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A ROOM SUCH AS A CLOSET OR BATHROOM. IF POSSIBLE...GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. TO REPORT ANY TORNADOES...FUNNEL CLOUDS...OR OTHER HAZARDOUS WEATHER OBSERVATIONS TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL FREE AT 1 8 7 7 6 3 3 6 7 7 2. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FRIDAY EVENING FOR SOUTHWESTERN ALABAMA. LAT...LON 3181 8818 3187 8817 3189 8791 3172 8795 TIME...MOT...LOC 2143Z 292DEG 17KT 3182 8812 $$
692 WWUS54 KMOB 212159 SVSMOB SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 459 PM CDT FRI MAY 21 2010 ALC023-212209- /O.CAN.KMOB.TO.W.0017.000000T0000Z-100521T2215Z/ CHOCTAW AL- 459 PM CDT FRI MAY 21 2010 ...THE TORNADO WARNING FOR SOUTH CENTRAL CHOCTAW COUNTY IS CANCELLED... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FRIDAY EVENING FOR SOUTHWESTERN ALABAMA. LAT...LON 3178 8810 3187 8813 3188 8792 3172 8795 TIME...MOT...LOC 2159Z 300DEG 22KT 3179 8805 $$ ALC025-212215- /O.CON.KMOB.TO.W.0017.000000T0000Z-100521T2215Z/ CLARKE AL- 459 PM CDT FRI MAY 21 2010 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR WEST CENTRAL CLARKE COUNTY... AT 455 PM CDT.... THIS TORNADO WAS OVER EXTREME WEST CENTRAL CLARKE COUNTY...OR ABOUT 19 MILES WEST OF GROVE HILL...MOVING SOUTHEAST AT 25 MPH. THE TORNADO WILL BE NEAR... RURAL WESTERN CLARKE COUNTY AT 510 PM CDT THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A ROOM SUCH AS A CLOSET OR BATHROOM. IF POSSIBLE...GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. HEAVY RAINFALL MAY BE OBSCURING THIS TORNADO. TAKE COVER NOW! IF YOU WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE. TO REPORT ANY TORNADOES...FUNNEL CLOUDS...OR OTHER HAZARDOUS WEATHER OBSERVATIONS TO YOUR NATIONAL WEATHER SERVICE...CALL TOLL FREE AT 1 8 7 7 6 3 3 6 7 7 2. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FRIDAY EVENING FOR SOUTHWESTERN ALABAMA. LAT...LON 3178 8810 3187 8813 3188 8792 3172 8795 TIME...MOT...LOC 2159Z 300DEG 22KT 3179 8805 $$
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, 4:54 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, 6:17 PM CDT | Tornado Warning | MOB | Clarke, Washington | 43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.