Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 172, NWS Birmingham, AL

April 20, 20114 counties in Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 20, 2011, 6:29 AM CDT for 4 counties in Alabama. It was in force for 46 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: Apr 20, 2011, 6:29 AM CDT (11:29 UTC)
Expired: Apr 20, 2011, 7:15 AM CDT
In force: 46 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Jefferson County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL

The radar

The Birmingham radar (KBMX), 38 km from the middle of the area, began a volume at 11:32 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
Apr 20, 6:50 AM CDT	TSTM WND DMG	1 E Alpine, AL	LARGE TREE DOWN ACROSS GRIST MILL ROAD NEAR THE GRIST MILL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 21 minutes after it went out.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 20, 3:37 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 11.5 hours before the alert went out and 38 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1717 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 1046 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 282 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

885 
WUUS54 KBMX 201129
SVRBMX
ALC073-115-117-121-201215-
/O.NEW.KBMX.SV.W.0172.110420T1129Z-110420T1215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
629 AM CDT WED APR 20 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN JEFFERSON COUNTY IN CENTRAL ALABAMA...
  SOUTHERN ST. CLAIR COUNTY IN CENTRAL ALABAMA...
  SHELBY COUNTY IN CENTRAL ALABAMA...
  WESTERN TALLADEGA COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 715 AM CDT

* AT 629 AM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70
  MPH.  THIS STORM WAS LOCATED NEAR SYLVAN SPRINGS...OR 6 MILES
  NORTHWEST OF HUEYTOWN...AND MOVING EAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HUEYTOWN...BESSEMER...FAIRFIELD...GARDENDALE...FULTONDALE...
  BIRMINGHAM...HOMEWOOD AND HELENA.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 242 THROUGH 271...
INTERSTATE 459 EXIT NUMBERS 6 THROUGH 33...
US 78 EXIT NUMBERS 81 THROUGH 91...
INTERSTATE 20 EXIT NUMBERS 108 THROUGH 168...
INTERSTATE 59 EXIT NUMBERS 130 THROUGH 143...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758.

LAT...LON 3365 8603 3311 8627 3311 8647 3347 8729
      3368 8706
TIME...MOT...LOC 1129Z 285DEG 56KT 3351 8702

$$

27

1 follow-up statement

382 
WWUS54 KBMX 201148
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
648 AM CDT WED APR 20 2011

ALC073-115-117-121-201215-
/O.CON.KBMX.SV.W.0172.000000T0000Z-110420T1215Z/
SHELBY AL-TALLADEGA AL-JEFFERSON AL-ST. CLAIR AL-
648 AM CDT WED APR 20 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN ST.
CLAIR...SOUTHERN JEFFERSON...WESTERN TALLADEGA AND SHELBY COUNTIES
UNTIL 715 AM CDT...

AT 643 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM WITH A HISTORY OF PRODUCING DESTRUCTIVE WINDS IN 
EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR VESTAVIA HILLS... 
MOVING EAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  TRUSSVILLE...CHELSEA...LEEDS...MOODY...COLUMBIANA...WILSONVILLE...
  TALLADEGA SPRINGS...PELL CITY...CHILDERSBURG AND SYLACAUGA.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 242 THROUGH 266...
INTERSTATE 459 EXIT NUMBERS 6 THROUGH 33...
US 78 EXIT NUMBER 91...
INTERSTATE 20 EXIT NUMBERS 108 THROUGH 168...
INTERSTATE 59 EXIT NUMBERS 130 THROUGH 141...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.

&&

TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.

LAT...LON 3365 8691 3365 8603 3311 8627 3311 8647
      3341 8716
TIME...MOT...LOC 1148Z 285DEG 56KT 3339 8669

$$

27

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 Apr 20, 4:45 AM CDT, 1 hour 44 minutes earlier.

Area forecast discussion, Apr 20, 4:45 AM CDT, 1 hour 44 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
445 AM CDT WED APR 20 2011

.DISCUSSION...

A BAND OF SHOWERS AND THUNDERSTORMS WILL BEGIN TO MOVE ACROSS
NORTHERN ALABAMA THIS MORNING. AS EXPECTED THE MAIN THREATS WITH
THESE STORMS WILL BE STRONG WINDS AND LARGE HAIL. THE LIGHTNING IS
PRETTY SUBSTANTIAL AS WELL. REALLY NOT MUCH HAS CHANGED FROM
YESTERDAY THINKING. THE COLD FRONT IS OR HAS ALREADY STALLED TO
OUR NORTH. THIS COMPLEX OF STORMS WILL CONTINUE TO SLIDE SOUTH OF
THE FRONT IN AN EASTWARD MOTION. THIS WILL BE WAVE NUMBER 1 OF
SEVERAL WAVES OVER THE NEXT 24 TO 36 HOURS AS THE AIRMASS REMAINS
UNSTABLE THROUGH THURSDAY AFTERNOON/POSSIBLY FRIDAY IN THE FAR
NORTHEAST.

LOOKS LIKE THIS AREA OF SHOWERS AND THUNDERSTORMS MAY DISSIPATE BY
LATE MORNING...BUT LEAVE BEHIND A BOUNDARY THAT WILL HELP PROVIDE
THE SPARK FOR ADDITIONAL DEVELOPMENT THIS AFTERNOON. DEPENDING ON
HOW FAR SOUTH THE COLD POOL FROM THE STORMS THIS MORNING MAKE WILL
REALLY DETERMINE WHAT AREAS HAVE THE BEST SHOT AT SEVERE
THUNDERSTORMS THIS AFTERNOON. THE BEST DYNAMICS WILL BE NORTH CLOSER
TO THE FRONT...BUT HOW WORKED OVER WILL THE AIRMASS BE AND WILL IT
HAVE TIME TO RE-ESTABLISH THAT THREAT BY THE AFTERNOON. AT THE SAME
TIME THE BEST HEATING WILL BE ACROSS THE SOUTH.  WITH ALL THAT SAID
WILL PLACE THE BEST THREAT FOR SEVERE STORMS NORTH THROUGH THE
MORNING AND SOUTH FOR THE AFTERNOON.

THE NEXT WAVE MAY MOVE INTO THE AREA AROUND THE SAME TIME THURSDAY
MORNING AS THIS MORNING. THE SAME THREATS WILL BE AROUND AS WELL AND
ALMOST SAME SCENARIO. WILL NEED TO WATCH THESE CELLS A LITTLE CLOSER
FOR ANY POSSIBLE FLOODING AS THE CELLS MAY BE MOVING SLOWER THAN THE
STORMS THIS MORNING. WITH PWS OF 1.6 TO 1.7 FORECAST...LOCALIZED
FLOODING WILL DEFINITELY BE A THREAT. QUESTIONS HERE WILL IT BE
ENOUGH OF A THREAT TO MENTION A FLASH FLOODING THREAT. BIGGEST
CONCERN WITH THIS SCENARIO IS THAT THE FFG GUIDANCE IS QUITE HIGH
AND WOULD NEED TO BE A LITTLE LOWER TO BE A GREAT CONCERN. SO
DEPENDING ON HOW MUCH RAIN WE GET THIS MORNING WILL BE A BIG PLAYER
INTO WHETHER A FLASH FLOOD WATCH WILL BE NEEDED. WILL HOLD OFF FOR
NOW.

LOOKS LIKE THE SYSTEM FINALLY WORKS OUT BY FRIDAY NOONTIME...GIVING
WAY TO SUNNY WEEKEND. THE NEXT SYSTEM WILL WORK INTO THE AREA
TUESDAY INTO WEDNESDAY. RIGHT NOW THERE IS A BIG TIMING DIFFERENCE
IN THE MODELS...24 TO EVEN 36 HOURS...SO TRYING TO PINPOINT IN THE
FORECAST THE EXACT FROPA IS DIFFICULT TO SAY THE LEAST. THE ONE
CONSISTENT FACTOR IS THAT THIS APPEARS TO A POTENTIALLY STRONG COLD
FRONT. WILL GO AHEAD AND ADD IN SEVERE INTO THE HWO FOR LATE
TUESDAY...HOWEVER THE SEVERE POTENTIAL WILL GENERALLY BE ALONG AND
AHEAD OF THE COLD FRONT SO THE TIMING WILL LIKELY CHANGE AS WE GET A
BETTER HANDLE ON THE TIMEFRAME. FEEL AS THOUGH THE THREAT IS
SUBSTANTIAL ENOUGH TO GO AHEAD AND START THE DISCUSSIONS AND
POTENTIAL IMPACTS.

AS FOR TEMPERATURES...DID NOT REALLY HAVE ANY TARGETS OF OPPORTUNITY
WITH HIGHS AS WE REMAIN IN THE UPPER 70S TO MID 80S FOR MUCH OF THE
PERIOD. FOR LOWS...REALLY FEEL AS THOUGH MOS GUIDE IS TOO LOW FOR
EACH MORNING AND WENT 2 TO 3 DEGREES ABOVE GUIDANCE. AS WE GET A
BETTER HANDLE ON THE SYSTEM AT THE END OF THE PERIOD...WE WILL
LIKELY SEE WARMER LOWS JUST AHEAD OF IT...BUT STAYED CLOSE TO MOS.

&&

.AVIATION...
06Z TAF DISCUSSION.

THE MOISTENING PROCESS CONTINUES...AND WE ALSO LOOK TO OUR WEST
WHERE THUNDERSTORMS ARE ROLLING RIGHT ALONG.  THE LOW CLOUDS ARE
STILL EXPECTED TO SPREAD FROM SOUTH AND WEST TO NORTH AND EAST.
LOOKS LIKE THE RAIN STARTS TO MOVE INTO THE NORTHERN TAFS AROUND
SUNRISE...PERHAPS EARLIER IF THE LINE ACCELERATES.

MY GUT FEELING IS THAT THIS INITIAL BATCH OF RAIN/STORMS WILL GO
UNTIL AROUND NOON OR SO TOMORROW...AND THEN THERE WILL BE A BREAK
THE REST OF THE AFTERNOON AND INTO THE EVENING.

NOTICE...KEET TAF WILL HAVE (AMD LTD TO VIS WIND AND WX) AMENDED TO
THE END OF THE FORECAST UNTIL FURTHER NOTICE. THE CEILOMETER DATA
WILL BE GOING THROUGH NUMEROUS TESTS AND MONITORED FOR ACCURACY.

/61/

&&

.PRELIMINARY POINT TEMPS/POPS...
GADSDEN     79  58  76  59  83 /  90  70  60  30  20
ANNISTON    82  64  78  62  83 /  70  70  60  30  20
BIRMINGHAM  81  65  80  64  84 /  70  70  60  20  10
TUSCALOOSA  82  64  82  62  85 /  70  70  60  20  10
CALERA      83  65  81  62  85 /  60  70  60  20  10
AUBURN      84  65  81  63  83 /  30  50  60  20  10
MONTGOMERY  86  67  84  63  85 /  30  50  30  20  10
TROY        86  66  85  61  86 /  20  30  30  20  10

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

16/61

Hazardous weather outlook, Apr 20, 3:50 AM CDT, 2 hours 39 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
350 AM CDT WED APR 20 2011

ALZ011>015-017>050-211200-
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-
350 AM CDT WED APR 20 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...REMAINDER OF TONIGHT.

STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS THE NORTHERN
PORTIONS OF CENTRAL ALABAMA. AREAS MOST LIKELY TO SEE THE
STRONGEST STORMS WILL BE ALONG AND NORTH OF INTERSTATE 20 CORRIDOR.
THE MAIN THREATS OVERNIGHT...WILL BE LARGE HAIL AND DAMAGING WINDS.
FLOODING WILL ALSO BE POSSIBLE IN THE LOCALIZED HOT SPOTS ACROSS
NORTH CENTRAL ALABAMA.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE FROM WEDNESDAY
MORNING THROUGH THURSDAY AFTERNOON. THE MAIN SEVERE WEATHER THREAT
WILL BE DAMAGING WINDS. THE TORNADO THREAT SHOULD REMAIN LOW
WEDNESDAY THROUGH THURSDAY.

HIGHER MOISTURE WILL ALSO SURGE NORTHWARD WITH THIS SYSTEM AND
LOCALIZED FLOODING WILL BECOME MORE OF A THREAT AS THE EVENT
UNFOLDS. AS THE FRONTAL BOUNDARY STALLS OVER THE AREA ON WEDNESDAY
AND THURSDAY...SEVERAL INCHES OF RAIN WILL BE POSSIBLE OVER A
LARGE AREA...FLASH FLOODING ALONG WITH RIVER FLOODING WILL BECOME
THE MAIN HAZARD.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT MAY BE NEEDED
THIS MORNING DUE TO THE POSSIBILITY OF SEVERE STORMS.

08/MNK

In the hours before

Local storm report, Apr 20, 6:05 AM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
605 AM CDT WED APR 20 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0535 AM     TSTM WND DMG     3 NW FAYETTE            33.72N 87.87W
04/20/2011                   FAYETTE            AL   BROADCAST MEDIA

            TREE AND POWERLINE DOWN ON RASBERRY LANE.

&&

16

Local storm report, Apr 20, 6:10 AM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
610 AM CDT WED APR 20 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0431 AM     TSTM WND DMG     BEAR CREEK              34.26N 87.72W
04/20/2011                   MARION             AL   BROADCAST MEDIA

            ROOF BLOWN OFF OF HOUSE AND TRACTOR SHED DESTROYED.
            NUMEROUS TREES AND POWER LINES DOWN.

&&

16

Special weather statement, Apr 20, 6:12 AM CDT, 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
612 AM CDT WED APR 20 2011

ALZ018-019-021-024>028-201200-
CALHOUN AL-CLAY AL-CLEBURNE AL-ETOWAH AL-JEFFERSON AL-SHELBY AL-ST.
CLAIR AL-TALLADEGA AL-
612 AM CDT WED APR 20 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN ETOWAH...ST. CLAIR...
CALHOUN...CLEBURNE...EASTERN JEFFERSON...TALLADEGA...NORTHEASTERN
SHELBY AND NORTHERN CLAY COUNTIES UNTIL 700 AM CDT...

AT 609 AM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM RAINBOW CITY TO 6 MILES
WEST OF RAGLAND TO ALTON TO HOMEWOOD...AND MOVING EAST AT 60 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  VESTAVIA HILLS...
  LEEDS...
  MARKTON...
  CHELSEA...
  PELL CITY...

&&

LAT...LON 3350 8547 3350 8564 3341 8564 3314 8610
      3342 8699 3376 8630 3392 8614 3391 8538
      3357 8532
TIME...MOT...LOC 1112Z 280DEG 54KT 3394 8606 3374 8619
          3357 8654 3345 8678

27

Special weather statement, Apr 20, 6:23 AM CDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
623 AM CDT WED APR 20 2011

ALZ020-201215-
CHEROKEE AL-
623 AM CDT WED APR 20 2011

...SIGNIFICANT WEATHER ADVISORY FOR CHEROKEE COUNTY UNTIL 715 AM
CDT...

AT 618 AM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM FORT PAYNE TO MARKTON...AND
MOVING SOUTHEAST AT 50 MPH.  BE AWARE THAT SOME STRONG WINDS MAY
COME AFTER THE LINE OF THUNDERSTORMS MOVES THROUGH YOUR AREA.  DO
NOT LET YOUR GUARD DOWN RIGHT AWAY.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  CENTRE...
  CEDAR BLUFF...
  LEESBURG...
  WEISS LAKE...
  GAYLESVILLE...

&&

LAT...LON 3448 8549 3398 8540 3396 8540 3395 8549
      3394 8549 3395 8552 3397 8573 3414 8579
      3413 8584 3425 8584 3427 8578 3438 8566
      3439 8562 3451 8556 3451 8553
TIME...MOT...LOC 1123Z 305DEG 44KT 3442 8556 3383 8601

27

Local storm report, Apr 20, 6:25 AM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
625 AM CDT WED APR 20 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0535 AM     TSTM WND DMG     BELK                    33.65N 87.93W
04/20/2011                   FAYETTE            AL   EMERGENCY MNGR

            TREE DOWN ON HWY 96 IN BELK. ANOTHER TREE DOWN AT COUNTY
            ROAD 4 AND COUNTY ROAD 159...SW OF BELK.

&&

16

Local storm report, Apr 20, 6:29 AM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BIRMINGHAM AL
629 AM CDT WED APR 20 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0431 AM     TSTM WND DMG     BEAR CREEK              34.26N 87.72W
04/20/2011                   MARION             AL   BROADCAST MEDIA

            ROOF BLOWN OFF OF HOUSE AND TRACTOR SHED DESTROYED.
            NUMEROUS TREES AND POWER LINES DOWN.

0535 AM     TSTM WND DMG     3 NW FAYETTE            33.72N 87.87W
04/20/2011                   FAYETTE            AL   BROADCAST MEDIA

            TREE AND POWERLINE DOWN ON RASBERRY LANE.

0535 AM     TSTM WND DMG     BELK                    33.65N 87.93W
04/20/2011                   FAYETTE            AL   EMERGENCY MNGR

            TREE DOWN ON HWY 96 IN BELK.

0548 AM     TSTM WND DMG     4 SE BELK               33.61N 87.88W
04/20/2011                   FAYETTE            AL   EMERGENCY MNGR

            TREE DOWN AT COUNTY ROAD 4 AND COUNTY ROAD 159. A CAR RAN
            INTO THE TREE.

0552 AM     HEAVY RAIN       VERNON                  33.76N 88.11W
04/20/2011  U0.00 INCH       LAMAR              AL   AMATEUR RADIO

            HEAVY RAIN HAS CAUSED MINOR STREET FLOODING IN VERNON AND
            SULLIGENT.

&&

16

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 20, 3:51 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	54 min
Apr 20, 4:26 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion, Walker, Winston	49 min
Apr 20, 5:06 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Fayette, Jefferson, Lamar, Pickens, Tuscaloosa and 2 more	39 min
Apr 20, 5:20 AM CDT	Areal Flood Advisory	BMX	Lamar	3 hr
Apr 20, 5:41 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Fayette, Jefferson, Lamar, Pickens, St. Clair and 2 more	49 min
Apr 20, 5:49 AM CDT	Special Weather Statement	BMX	Etowah	41 min
Apr 20, 5:58 AM CDT	Special Weather Statement	BMX	Marion	47 min
Apr 20, 6:12 AM CDT	Special Weather Statement	BMX	Calhoun, Cleburne, St. Clair, Talladega	48 min
Apr 20, 6:23 AM CDT	Special Weather Statement	BMX	Cherokee	52 min
Apr 20, 6:55 AM CDT	Special Weather Statement	BMX	Clay, Cleburne, Randolph	50 min
Apr 20, 7:15 AM CDT	Special Weather Statement	BMX	Chambers, Clay, Randolph, Tallapoosa	45 min
Apr 20, 7:31 AM CDT	Special Weather Statement	BMX	Fayette, Tuscaloosa	44 min
Apr 20, 7:42 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Greene, Lamar, Pickens, Sumter, Tuscaloosa	48 min
Apr 20, 8:27 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Pickens, Sumter, Tuscaloosa	63 min
Apr 20, 9:01 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Hale, Perry, Tuscaloosa	59 min
Apr 20, 9:37 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Jefferson, Shelby, Tuscaloosa	53 min
Apr 20, 10:19 AM CDT	Special Weather Statement	BMX	Shelby, Talladega	56 min
Apr 20, 10:46 AM CDT	Severe Thunderstorm Warning	BMX	Clay, Coosa, Talladega, Tallapoosa	22 min
Apr 20, 11:10 AM CDT	Special Weather Statement	BMX	Clay, Coosa, Tallapoosa	50 min
Apr 20, 12:18 PM CDT	Flash Flood Watch	BMX	Bibb, Blount, Calhoun, Cherokee, Chilton, Clay and 19 more	27 hr
Apr 20, 2:49 PM CDT	Special Weather Statement	BMX	Lamar	41 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.