Alert archive / Alabama / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 248, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at May 16, 2009, 11:57 AM CDT for Bibb County, Chilton County, Perry County, Alabama. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 16, 2009, 11:57 AM CDT (16:57 UTC)
- Expired
- May 16, 2009, 12:45 PM CDT
- In force
- 48 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
Counties Bibb County, AL, Chilton County, AL, Perry County, AL
The radar
The Birmingham radar (KBMX), 46 km from the middle of the area, began a volume at 17:00 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 nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 5.0 hours before the alert went out and 46 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
- 609 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 570 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 May 16, 10:30 AM CDT, 1 hour 27 minutes earlier.
Area forecast discussion, May 16, 10:30 AM CDT, 1 hour 27 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BIRMINGHAM AL 1030 AM CDT SAT MAY 16 2009 .UPDATE...FOR TODAY AND ADDITION OF FLASH FLOOD WATCH. && .DISCUSSION... TWO MAIN AREAS OF RAIN AND THUNDERSTORMS ACROSS THE AREA THIS MORNING. THESE SHOWERS AND THUNDERSTORMS ARE MOVING EXTREMELY SLOW AND BACK BUILDING AS WELL...SO WENT AHEAD AND ISSUED A FLASH FLOOD WATCH FOR THE THE NORTHERN TWO-THIRDS OF CENTRAL ALABAMA THROUGH SUNDAY 7 AM. THIS ACTIVITY IS WELL AHEAD OF THE COLD FRONT THAT WILL BEGIN TO WORK INTO CENTRAL ALABAMA OVERNIGHT. RAIN CHANCES WERE ALREADY CATEGORICAL BUT WENT AHEAD AND INCREASED THEM UPWARDS IN AREAS WITH THE RAIN ALREADY FALLING AND EXPECTED. ALSO ADJUSTED TEMPERATURES DOWN FOR THE AFTERNOON ACROSS THE AREAS THAT HAVE ALREADY SEEN THE RAIN. UPDATES HAVE BEEN SENT. && .AVIATION...12Z TAF DISCUSSION. LOW CLOUDS ARE QUICKLY DEVELOPING ACROSS THE AREA THIS MORNING. MOST SITES SHOULD SEE CEILINGS BETWEEN 700 AND 1500 FEET AT LEAST THROUGH 15Z. CEILINGS WILL SLOWLY LIFT SHORTLY AFTER. SHOWERS AND THUNDERSTORMS ARE STILL EXPECTED THIS AFTERNOON AND EVENING. THEY CAN OCCUR AT ANY GIVEN TIME SO IT IS REALLY HARD TO PIN DOWN AN ACTUAL TIMING. AS A RESULT...WILL KEEP VCTS INSTEAD OF PREVAILING IN THE FORECAST. LOW CLOUDS WILL ONCE AGAIN BE A PROBLEM LATER TONIGHT...MAINLY AFTER 06Z. 10/ARM && .BMX WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH FOR MARION...LAMAR...FAYETTE...WINSTON... WALKER...BLOUNT...ETOWAH...CALHOUN...CHEROKEE...CLEBURNE... PICKENS...TUSCALOOSA...JEFFERSON...SHELBY...ST. CLAIR... TALLADEGA...CLAY...RANDOLPH...BIBB...CHILTON...COOSA... TALLAPOOSA...CHAMBERS...LEE. && 16
Hazardous weather outlook, May 16, 10:45 AM CDT, 1 hour 12 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BIRMINGHAM AL 1045 AM CDT SAT MAY 16 2009 ALZ011>015-017>050-171530- AUTAUGA-BARBOUR-BIBB-BLOUNT-BULLOCK-CALHOUN-CHAMBERS-CHEROKEE- CHILTON-CLAY-CLEBURNE-COOSA-DALLAS-ELMORE-ETOWAH-FAYETTE-GREENE-HALE- JEFFERSON-LAMAR-LEE-LOWNDES-MACON-MARENGO-MARION-MONTGOMERY-PERRY- PICKENS-PIKE-RANDOLPH-RUSSELL-SHELBY-ST CLAIR-SUMTER-TALLADEGA- TALLAPOOSA-TUSCALOOSA-WALKER-WINSTON- 1045 AM CDT SAT MAY 16 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM. .DAY ONE...TODAY AND TONIGHT. STRONG THUNDERSTORMS ARE POSSIBLE ACROSS ALL OF CENTRAL ALABAMA BETWEEN NOON AND 10 PM. THE MAIN THREAT WITH THESE STORMS WILL BE LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS OF UP TO 40 MPH. FLASH FLOODING DUE TO SEVERAL PERIODS OF HEAVY RAINFALL WILL BE POSSIBLE MAINLY NORTH OF A LINE FROM AUBURN TO CLANTON TO ALICEVILLE. A FLASH FLOOD WATCH IS IN EFFECT THROUGH 7 AM SUNDAY MORNING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. STRONG THUNDERSTORMS WILL BE POSSIBLE ON SUNDAY AFTERNOON MAINLY ALONG AND SOUTH OF A LINE EXTENDING FROM EUTAW...CLANTON...ALEXANDER CITY AND LAFAYETTE. THE MAIN THREATS WILL BE LOCALLY HEAVY RAINFALL AND STRONG GUSTY WINDS OF UP TO 40 MPH. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT IS NOT EXPECTED AT THIS TIME.
In the hours before
Local storm report, May 16, 10:47 AM CDT, 1 hour 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1047 AM CDT SAT MAY 16 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1030 AM FLASH FLOOD ROANOKE 33.15N 85.37W
05/16/2009 RANDOLPH AL EMERGENCY MNGR
POLICE REPORT STREET FLOODING IN ROANOKE.
1030 AM FLASH FLOOD 3 E ROANOKE 33.15N 85.32W
05/16/2009 RANDOLPH AL EMERGENCY MNGR
DICKERT FIRE DEPARTMENT REPORTS WATER OVER HIGHWAY 22.
&&Local storm report, May 16, 10:56 AM CDT, 1 hour 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1056 AM CDT SAT MAY 16 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1045 AM FLASH FLOOD ROANOKE 33.15N 85.37W
05/16/2009 RANDOLPH AL LAW ENFORCEMENT
CHESTNUT AND LOUINA ROADS CLOSED DUE TO FLOODING.
&&Local storm report, May 16, 11:43 AM CDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1143 AM CDT SAT MAY 16 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1135 AM FLASH FLOOD CORINTH 33.17N 85.56W
05/16/2009 RANDOLPH AL EMERGENCY MNGR
WATER 6 INCHES DEEP FLOWING ACROSS COUNTY ROAD 49 IN THE
CORINTH COMMUNITY.
&&Local storm report, May 16, 11:51 AM CDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1151 AM CDT SAT MAY 16 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1135 AM FLASH FLOOD ROANOKE 33.15N 85.37W
05/16/2009 RANDOLPH AL EMERGENCY MNGR
ROANOKE PD REPORTS WATER 2 FEET DEEP IN ONE CONFINED AREA
OF CHESTNUT ROAD...AND 1 FOOT DEEP BLOCKING A 10 FOOT
WIDE SECTION OF LOUINA ROAD. BOTH ROADS ARE CLOSED.
&&The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 8:56 PM CDT | Areal Flood Advisory | BMX | Lee, Russell, Tallapoosa | 3 hr |
| May 15, 10:58 PM CDT | Areal Flood Advisory | BMX | Cleburne | 3 hr |
| May 15, 11:14 PM CDT | Areal Flood Advisory | BMX | Jefferson, Shelby | 3 hr |
| May 16, 9:54 AM CDT | Flash Flood Watch | BMX | Barbour, Bibb, Blount, Bullock, Calhoun, Chambers and 25 more | 33 hr |
| May 16, 9:58 AM CDT | Areal Flood Advisory | BMX | Jefferson, Shelby | 3 hr |
| May 16, 10:15 AM CDT | Flash Flood Warning | BMX | Randolph | 4 hr |
| May 16, 12:20 PM CDT | Areal Flood Advisory | BMX | Chambers | 3 hr |
| May 16, 12:39 PM CDT | Severe Thunderstorm Warning | BMX | Perry | 26 min |
| May 16, 1:48 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Lamar | 42 min |
| May 16, 2:05 PM CDT | Severe Thunderstorm Warning | BMX | Pickens | 40 min |
| May 16, 2:49 PM CDT | Severe Thunderstorm Warning | BMX | Marengo | 26 min |
| May 16, 3:31 PM CDT | Areal Flood Advisory | BMX | Marengo | 3 hr |
| May 16, 4:37 PM CDT | Severe Thunderstorm Warning | BMX | Winston | 23 min |
| May 16, 5:07 PM CDT | Severe Thunderstorm Warning | BMX | Montgomery | 38 min |
| May 16, 5:43 PM CDT | Areal Flood Advisory | BMX | Barbour | 3 hr |
| May 16, 6:14 PM CDT | Severe Thunderstorm Warning | BMX | Russell | 31 min |
| May 16, 6:23 PM CDT | Severe Thunderstorm Warning | BMX | Blount, Jefferson | 37 min |
| May 16, 6:43 PM CDT | Areal Flood Advisory | BMX | Pike | 3 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.