Alert archive / Alabama / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 394, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Aug 10, 2011, 2:10 PM CDT for Greene County, Pickens County, Alabama. It was in force for 50 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
- Aug 10, 2011, 2:10 PM CDT (19:10 UTC)
- Expired
- Aug 10, 2011, 3:00 PM CDT
- In force
- 50 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
Counties Greene County, AL, Pickens County, AL
The radar
The Columbus AFB radar (KGWX), 106 km from the middle of the area, began a volume at 19:10 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 7.2 hours before the alert went out and 111 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
- 386 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 912 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
630
WUUS54 KBMX 101910
SVRBMX
ALC063-107-102000-
/O.NEW.KBMX.SV.W.0394.110810T1910Z-110810T2000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
ISSUED BY NATIONAL WEATHER SERVICE PEACHTREE CITY GA
210 PM CDT WED AUG 10 2011
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN GREENE COUNTY IN WEST CENTRAL ALABAMA
SOUTH CENTRAL PICKENS COUNTY IN WEST CENTRAL ALABAMA
* UNTIL 300 PM CDT
* AT 209 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...AND
DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR
ALICEVILLE...MOVING EAST AT 25 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
UNION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
&&
LAT...LON 3317 8820 3308 8783 3303 8783 3303 8771
3300 8771 3298 8775 3294 8774 3290 8778
3289 8782 3284 8783 3296 8816 3299 8817
3299 8823 3300 8828
TIME...MOT...LOC 1910Z 290DEG 22KT 3306 8814
$$2 follow-up statements
275
WWUS54 KBMX 101940
SVSBMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
ISSUED BY NATIONAL WEATHER SERVICE PEACHTREE CITY GA
240 PM CDT WED AUG 10 2011
ALC107-101949-
/O.CAN.KBMX.SV.W.0394.000000T0000Z-110810T2000Z/
PICKENS AL-
240 PM CDT WED AUG 10 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL PICKENS COUNTY
IS CANCELLED...
THE THUNDERSTORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE
COUNTY.
LAT...LON 3305 8814 3305 8809 3306 8807 3305 8804
3307 8803 3311 8795 3308 8783 3303 8783
3303 8771 3300 8771 3298 8775 3294 8774
3289 8782 3284 8783 3296 8816 3299 8817
3302 8817
TIME...MOT...LOC 1939Z 288DEG 21KT 3301 8795
$$
ALC063-102000-
/O.CON.KBMX.SV.W.0394.000000T0000Z-110810T2000Z/
GREENE AL-
240 PM CDT WED AUG 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM CDT
FOR NORTHERN GREENE COUNTY...
AT 236 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED
HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR
UNION...MOVING EAST AT 25 MPH.
THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS
OF THE INDICATED COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
&&
LAT...LON 3305 8814 3305 8809 3306 8807 3305 8804
3307 8803 3311 8795 3308 8783 3303 8783
3303 8771 3300 8771 3298 8775 3294 8774
3289 8782 3284 8783 3296 8816 3299 8817
3302 8817
TIME...MOT...LOC 1939Z 288DEG 21KT 3301 8795
$$837
WWUS54 KBMX 101955
SVSBMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
ISSUED BY NATIONAL WEATHER SERVICE PEACHTREE CITY GA
255 PM CDT WED AUG 10 2011
ALC063-102004-
/O.EXP.KBMX.SV.W.0394.000000T0000Z-110810T2000Z/
GREENE AL-
255 PM CDT WED AUG 10 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN GREENE COUNTY EXPIRES
AT 300 PM CDT...
AT 250 PM CDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS
STORM WAS LOCATED NEAR UNION...MOVING EAST AT 25 MPH.
THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS
OF THE INDICATED COUNTY.
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
LAT...LON 3305 8814 3305 8809 3306 8807 3305 8804
3307 8803 3311 8795 3308 8783 3303 8783
3303 8771 3300 8771 3298 8775 3294 8774
3289 8782 3284 8783 3296 8816 3299 8817
3302 8817
TIME...MOT...LOC 1954Z 288DEG 21KT 3298 8785
$$What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Birmingham, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 10, 12:45 PM CDT, 1 hour 25 minutes earlier.
Area forecast discussion, Aug 10, 12:45 PM CDT, 1 hour 25 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE BIRMINGHAM AL ISSUED BY NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1245 PM CDT WED AUG 10 2011 .UPDATE... ALTHOUGH MCS OVER MEMPHIS AREA IS WEAKENING...ONLY RECENT MODEL RUNS HAVE BEGUN TO PICK UP THIS FEATURE WHICH IS MOVING FASTER THAN PREV MODELS INDICATED. 12Z NAM AND 11-13Z HRRR RUNS INDICATE COULD SEE REDEVELOPMENT OF SCT TSRA THIS AFTERNOON OVER WRN ZONES...LIKELY DUE TO ENHANCED FLOW AND LOW LEVEL FORCING DUE TO MCV. NEW MET GUIDANCE ALSO HAS SLT CHC TO CHC POPS WHICH IS QUITE A BIT HIGHER THAN PREVIOUS RUNS. ON SAT IMAGERY...LOW AND MID CLOUDS ALREADY DEVELOPING LATE THIS MORNING SO MOISTURE HAS RECOVERED SOME FROM FAIRLY DRY SOUNDING AT 12Z. HAVE BUMPED UP POPS FOR WESTERN 2/3RDS OF CWA TODAY. LIKEWISE...COULD SEE SOME SVR STORMS MOVE IN A LITTLE SOONER THAN PREVIOUSLY EXPECTED ASSUMING THEY DEVELOP. WILL TWEAK HWO TO ADD SVR POSS BEGINNING LATE THIS AFTERNOON FOR WESTERN AREAS AFTER LOOKING AT 16Z SPC DAY1 OUTLOOK. REST OF FCST LOOKS GOOD. SNELSON && .AVIATION... 18Z TAF DISCUSSION. REMNANTS OF MCS MOVING ACROSS THE MID SOUTH WILL PUSH INTO ALABAMA LATE THIS AFTERNOON. HAVE INCLUDED CB IN THE TAFS BEGINNING 22Z WEST THROUGH 00Z EAST/SOUTHEAST. ANY CONVECTION SHOULD DISSIPATE OVERNIGHT. EXPECT MVFR FOG TO DEVELOP AT MOST SITES WITH CALM WINDS. MODELS INDICATE ANOTHER MCS MOVING ACROSS THE AREA EARLY THURSDAY... SO HAVE MADE MINOR ADJUSTMENTS AND STARTED CB AT 12Z TO ACCOUNT FOR THIS. TIMING STILL UNCERTAIN AS WELL AS POTENTIAL STRENGTH SO NO ADDITIONAL CHANGES TO THURSDAY TAF AT THIS TIME. WESTERLY WINDS EXPECTED BUT SOME HINTS AT NORTHEASTERLY WINDS THURSDAY WITH THE MCS PASSING THROUGH. TDP && .PRELIMINARY POINT TEMPS/POPS... GADSDEN 93 69 92 68 93 / 10 20 30 20 30 ANNISTON 93 72 94 68 94 / 10 20 30 20 30 BIRMINGHAM 94 75 94 73 94 / 20 30 30 20 30 TUSCALOOSA 96 73 95 70 96 / 20 30 30 20 30 CALERA 94 73 92 70 94 / 20 20 30 20 30 AUBURN 93 74 95 72 95 / 10 20 30 20 30 MONTGOMERY 95 75 97 72 97 / 10 10 30 20 30 TROY 95 72 96 70 97 / 10 10 30 20 30 && .BMX WATCHES/WARNINGS/ADVISORIES... NONE. &&
Hazardous weather outlook, Aug 10, 11:45 AM CDT, 2 hours 25 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE BIRMINGHAM AL ISSUED BY NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1145 AM CDT WED AUG 10 2011 ALZ011>015-017>050-111045- MARION-LAMAR-FAYETTE-WINSTON-WALKER-BLOUNT-ETOWAH-CALHOUN- CHEROKEE-CLEBURNE-PICKENS-TUSCALOOSA-JEFFERSON-SHELBY-ST. CLAIR- TALLADEGA-CLAY-RANDOLPH-SUMTER-GREENE-HALE-PERRY-BIBB-CHILTON- COOSA-TALLAPOOSA-CHAMBERS-MARENGO-DALLAS-AUTAUGA-LOWNDES-ELMORE- MONTGOMERY-MACON-BULLOCK-LEE-RUSSELL-PIKE-BARBOUR- 1145 AM CDT WED AUG 10 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM. .DAY ONE...TODAY AND TONIGHT. SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS PORTIONS OF CENTRAL ALABAMA THIS AFTERNOON AND TONIGHT...MAINLY LATE THIS AFTERNOON INTO THIS EVENING AS THE REMNANTS OF STORMS OVER THE MID MISSISSIPPI VALLEY MOVE INTO THE AREA. IMPACTED AREAS INCLUDE PORTIONS OF CENTRAL ALABAMA ALONG AND WEST OF A MONTGOMERY TO ANNISTON LINE. THE MAIN THREATS WILL BE DAMAGING WINDS AND FREQUENT LIGHTNING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. SEVERE THUNDERSTORMS MAY CONTINUE INTO THE REST OF CENTRAL ALABAMA DURING THE DAY THURSDAY. THE HAZARDOUS THREATS INCLUDE DAMAGING STRAIGHT LINE WIND GUSTS...FREQUENT LIGHTNING AND HEAVY RAIN. THERE ARE STILL SOME TIMING DIFFERENCES AND THE EXACT TIMING WILL BE DETERMINED BY UPSTREAM CONVECTION. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT MAY BE NEEDED ACROSS THE AREA OVERNIGHT AND INTO THURSDAY.
In the hours before
Special weather statement, Aug 10, 1:49 PM CDT, 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL ISSUED BY NATIONAL WEATHER SERVICE PEACHTREE CITY GA 149 PM CDT WED AUG 10 2011 ALZ022-101930- 149 PM CDT WED AUG 10 2011 ...SIGNIFICANT WEATHER ALERT FOR EXCESSIVE LIGHTNING AND WIND GUSTS TO 40 MPH IN PICKENS COUNTY UNTIL 230 PM CDT... AT 146 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS FROM 6 MILES NORTHEAST OF PICKENSVILLE TO 10 MILES SOUTH OF MEMPHIS...MOVING SOUTHEAST AT 20 MPH. LIGHTNING DETECTION SYSTEMS INDICATE NUMEROUS CLOUD-TO-GROUND LIGHTNING STRIKES ACROSS PICKENS COUNTY...INCLUDING AREAS AROUND PICKENSVILLE...MEMPHIS...MCMULLEN...ALICEVILLE AND CARROLLTON. RESIDENTS IN THIS AREA SHOULD STAY INDOORS. IN ADDITION WIND GUSTS TO 40 MPH WILL BE POSSIBLE AS THE STORM MOVES ACROSS THE COUNTY. ELECTRICAL APPLIANCES AND TELEPHONES SHOULD NOT BE USED UNLESS IN AN EMERGENCY.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 3:10 PM CDT | Severe Thunderstorm Warning | BMX | Bibb, Hale, Perry | 50 min |
| Aug 10, 3:17 PM CDT | Special Weather Statement | BMX | Hale | 43 min |
| Aug 10, 3:33 PM CDT | Special Weather Statement | BMX | Bibb | 42 min |
| Aug 10, 3:42 PM CDT | Severe Thunderstorm Warning | BMX | Perry | 48 min |
| Aug 10, 3:52 PM CDT | Special Weather Statement | BMX | Lowndes | 38 min |
| Aug 10, 4:08 PM CDT | Flash Flood Warning | BMX | Lamar | 57 min |
| Aug 10, 4:12 PM CDT | Special Weather Statement | BMX | Dallas | 48 min |
| Aug 10, 4:18 PM CDT | Special Weather Statement | BMX | Autauga | 42 min |
| Aug 10, 4:23 PM CDT | Severe Thunderstorm Warning | BMX | Dallas | 52 min |
| Aug 10, 4:34 PM CDT | Special Weather Statement | BMX | Lamar, Pickens | 41 min |
| Aug 10, 4:40 PM CDT | Severe Thunderstorm Warning | BMX | Pickens | 50 min |
| Aug 10, 5:02 PM CDT | Severe Thunderstorm Warning | BMX | Greene, Pickens, Sumter | 43 min |
| Aug 10, 5:21 PM CDT | Special Weather Statement | BMX | Montgomery | 39 min |
| Aug 10, 5:43 PM CDT | Special Weather Statement | BMX | Greene | 47 min |
| Aug 10, 6:20 PM CDT | Special Weather Statement | BMX | Sumter | 40 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2011Every severe thunderstorm warning in 2011
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.