Alert archive / Alabama / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 21, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Feb 18, 2009, 5:33 PM CST for 6 counties in Alabama. It was in force for 42 min. 1 report 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
- Feb 18, 2009, 5:33 PM CST (23:33 UTC)
- Expired
- Feb 18, 2009, 6:15 PM CST
- In force
- 42 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
Counties Calhoun County, AL, Clay County, AL, Cleburne County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL
The radar
The Birmingham radar (KBMX), 82 km from the middle of the area, began a volume at 23:33 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 |
|---|---|---|---|
| Feb 18, 6:20 PM CST | HAIL 1 | Barfield, 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 |
|---|---|---|---|
| Feb 18, 12:42 PM CST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 11.6 hours before the alert went out and 83 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
- 11 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 526 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 604 m²/s²
- 0-3 km storm-relative helicity
- 698 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KBMX 182333 SVRBMX ALC015-027-029-115-117-121-190015- /O.NEW.KBMX.SV.W.0021.090218T2333Z-090219T0015Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 533 PM CST WED FEB 18 2009 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME NORTHEASTERN SHELBY COUNTY IN CENTRAL ALABAMA... SOUTH CENTRAL ST. CLAIR COUNTY IN CENTRAL ALABAMA... SOUTH CENTRAL CALHOUN COUNTY IN EAST CENTRAL ALABAMA... THIS INCLUDES THE CITY OF OXFORD... NORTH CENTRAL CLAY COUNTY IN EAST CENTRAL ALABAMA... SOUTHWESTERN CLEBURNE COUNTY IN EAST CENTRAL ALABAMA... CENTRAL TALLADEGA COUNTY IN EAST CENTRAL ALABAMA... THIS INCLUDES THE CITY OF TALLADEGA... * UNTIL 615 PM CST * AT 528 PM CST...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL. THIS STORM WAS LOCATED NEAR LOGAN MARTIN DAM...OR 7 MILES NORTHEAST OF CHILDERSBURG...AND MOVING EAST AT 50 MPH. ANOTHER STORM WAS LOCATED 2 MILES SOUTHWEST OF THE TALLADEGA SUPER SPEEDWAY... MOVING EAST AT 50 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... TALLADEGA BY 540 PM CST... WALDO BY 545 PM CST... 9 MILES SOUTH OF GRANT TOWN BY 555 PM CST... MOUNT CHEAHA BY 600 PM CST... BARFIELD BY 605 PM CST... THIS INCLUDES INTERSTATE 20 EXIT NUMBERS 173 THROUGH 191. A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST WEDNESDAY EVENING FOR ALABAMA. TO REPORT SEVERE WEATHER... CALL 1-800-856-0758. LAT...LON 3364 8572 3335 8568 3328 8636 3355 8639 TIME...MOT...LOC 2332Z 262DEG 44KT 3338 8624 $$
2 follow-up statements
000
WWUS54 KBMX 182347
SVSBMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
547 PM CST WED FEB 18 2009
ALC115-117-182358-
/O.CAN.KBMX.SV.W.0021.000000T0000Z-090219T0015Z/
SHELBY AL-ST. CLAIR AL-
548 PM CST WED FEB 18 2009
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL ST. CLAIR AND
EXTREME NORTHEASTERN SHELBY COUNTIES IS CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST WEDNESDAY EVENING
FOR ALABAMA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CST
WEDNESDAY EVENING FOR SOUTHEASTERN ALABAMA.
LAT...LON 3340 8623 3362 8589 3364 8572 3335 8568
3329 8628
TIME...MOT...LOC 2348Z 276DEG 43KT 3334 8602
$$
ALC015-027-029-121-190015-
/O.CON.KBMX.SV.W.0021.000000T0000Z-090219T0015Z/
CLAY AL-TALLADEGA AL-CLEBURNE AL-CALHOUN AL-
548 PM CST WED FEB 18 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CST
FOR SOUTH CENTRAL CALHOUN...SOUTHWESTERN CLEBURNE...CENTRAL TALLADEGA
AND NORTH CENTRAL CLAY COUNTIES...
AT 542 PM CST...THE NATIONAL WEATHER SERVICE CONTINUED TO INDICATE A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
WALDO...OR ABOUT 6 MILES SOUTH OF TALLADEGA...MOVING EAST AT 50 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
BARFIELD BY 610 PM CST...
THIS INCLUDES INTERSTATE 20 EXIT NUMBERS 179 THROUGH 191.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST WEDNESDAY EVENING
FOR ALABAMA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CST
WEDNESDAY EVENING FOR SOUTHEASTERN ALABAMA.
LAT...LON 3340 8623 3362 8589 3364 8572 3335 8568
3329 8628
TIME...MOT...LOC 2348Z 276DEG 43KT 3334 8602
$$000
WWUS54 KBMX 182357
SVSBMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
557 PM CST WED FEB 18 2009
ALC015-029-190008-
/O.CAN.KBMX.SV.W.0021.000000T0000Z-090219T0015Z/
CLEBURNE AL-CALHOUN AL-
558 PM CST WED FEB 18 2009
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CALHOUN AND
SOUTHWESTERN CLEBURNE COUNTIES IS CANCELLED...
THIS INCLUDES INTERSTATE 20 EXIT NUMBERS 185 THROUGH 191.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST WEDNESDAY EVENING
FOR ALABAMA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CST
WEDNESDAY EVENING FOR SOUTHEASTERN ALABAMA.
LAT...LON 3340 8609 3342 8599 3341 8587 3335 8568
3330 8614
TIME...MOT...LOC 2358Z 270DEG 31KT 3334 8596
$$
ALC027-121-190015-
/O.CON.KBMX.SV.W.0021.000000T0000Z-090219T0015Z/
CLAY AL-TALLADEGA AL-
558 PM CST WED FEB 18 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CST
FOR CENTRAL TALLADEGA AND CENTRAL CLAY COUNTIES...
AT 556 PM CST...THE NATIONAL WEATHER SERVICE CONTINUED TO INDICATE A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL. THIS
STORM WAS LOCATED NEAR CHANDLER SPRINGS...OR ABOUT 9 MILES SOUTHEAST
OF TALLADEGA...MOVING EAST AT 35 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
RURAL CENTRAL CLAY COUNTY AT 610 PM CST
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST WEDNESDAY EVENING
FOR ALABAMA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM CST
WEDNESDAY EVENING FOR SOUTHEASTERN ALABAMA.
LAT...LON 3340 8609 3342 8599 3341 8587 3335 8568
3330 8614
TIME...MOT...LOC 2358Z 270DEG 31KT 3334 8596
$$The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 18, 4:01 AM CST | Lake Wind Advisory | BMX | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more | 14 hr |
| Feb 18, 2:31 PM CST | Severe Thunderstorm Warning | BMX | Jefferson, St. Clair | 29 min |
| Feb 18, 2:39 PM CST | Tornado Warning | BMX | Calhoun, Jefferson, St. Clair, Shelby, Talladega | 51 min |
| Feb 18, 2:42 PM CST | Severe Thunderstorm Warning | BMX | Cherokee | 33 min |
| Feb 18, 3:11 PM CST | Severe Thunderstorm Warning | BMX | Russell | 17 min |
| Feb 18, 3:12 PM CST | Severe Thunderstorm Warning | BMX | Jefferson, Tuscaloosa, Walker | 24 min |
| Feb 18, 3:19 PM CST | Severe Thunderstorm Warning | BMX | Greene, Hale, Marengo, Sumter | 41 min |
| Feb 18, 3:22 PM CST | Tornado Warning | BMX | Calhoun, Clay, Cleburne, Randolph, St. Clair, Talladega | 38 min |
| Feb 18, 3:53 PM CST | Severe Thunderstorm Warning | BMX | Blount, Jefferson, St. Clair | 37 min |
| Feb 18, 3:55 PM CST | Tornado Warning | BMX | Calhoun, Cleburne, Randolph | 35 min |
| Feb 18, 3:57 PM CST | Tornado Warning | BMX | Dallas, Greene, Hale, Marengo, Perry, Sumter | 33 min |
| Feb 18, 4:24 PM CST | Tornado Warning | BMX | Blount, Calhoun, Cleburne, Etowah, St. Clair, Talladega | 66 min |
| Feb 18, 4:24 PM CST | Tornado Warning | BMX | Dallas, Hale, Marengo, Perry | 51 min |
| Feb 18, 4:42 PM CST | Severe Thunderstorm Warning | BMX | Bibb, Jefferson, Shelby, Tuscaloosa | 33 min |
| Feb 18, 4:52 PM CST | Tornado Warning | BMX | Autauga, Dallas, Lowndes, Perry | 38 min |
| Feb 18, 5:13 PM CST | Severe Thunderstorm Warning | BMX | Bibb, Jefferson, Shelby, Talladega, Tuscaloosa | 47 min |
| Feb 18, 5:24 PM CST | Severe Thunderstorm Warning | BMX | Dallas, Greene, Hale, Marengo, Perry, Sumter | 66 min |
| Feb 18, 5:28 PM CST | Tornado Warning | BMX | Autauga, Dallas, Elmore, Lowndes, Montgomery | 47 min |
| Feb 18, 5:39 PM CST | Severe Thunderstorm Warning | BMX | Bibb, Greene, Jefferson, Pickens, Shelby, Tuscaloosa | 51 min |
| Feb 18, 5:41 PM CST | Severe Thunderstorm Warning | BMX | Calhoun, Cherokee, Cleburne, Etowah | 34 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2009Every severe thunderstorm warning in 2009
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.