Alert archive / Alabama / Flash Flood Warnings in 2009
Flash Flood Warning 86, NWS Huntsville, AL
NWS Huntsville, AL issued this flash flood warning at Sep 25, 2009, 3:06 PM CDT for Lawrence County, Alabama. It was in force for 101 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
- Sep 25, 2009, 3:06 PM CDT (20:06 UTC)
- Expired
- Sep 25, 2009, 4:47 PM CDT
- In force
- 101 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Flood severity
- None
County Lawrence County, AL
The radar
The Columbus AFB radar (KGWX), 117 km from the middle of the area, began a volume at 20:07 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
Nashville Metro, TN (KBNA), launched 12:00Z, 8.1 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
- 1058 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 549 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Huntsville, AL wrote its last area forecast discussion before this flash flood warning went out at Sep 25, 12:44 PM CDT, 2 hours 22 minutes earlier.
Area forecast discussion, Sep 25, 12:44 PM CDT, 2 hours 22 minutes before
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</html>Hazardous weather outlook, Sep 25, 1:41 PM CDT, 1 hour 25 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HUNTSVILLE AL 141 PM CDT FRI SEP 25 2009 ALZ001>010-016-TNZ076-096-097-260400- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN- MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN- 141 PM CDT FRI SEP 25 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...THIS AFTERNOON AND TONIGHT... SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS THE AREA THIS AFTERNOON AND TONIGHT. LOCALIZED HEAVY RAINFALL WILL ENHANCE FLASH FLOODING CONCERNS ACROSS THE TENNESSEE VALLEY. A FLASH FLOOD WATCH IS IN EFFECT FOR THIS AFTERNOON AND TONIGHT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY... A GREATER CHANCE FOR SHOWERS AND THUNDERSTORMS WILL EXIST ON SATURDAY AS A COLD FRONT APPROACHES THE TENNESSEE VALLEY. A FEW STRONG THUNDERSTORMS WITH GUSTY WINDS...HEAVY RAINFALL...AND FREQUENT LIGHTNING WILL ALSO BE POSSIBLE ALONG THE COLD FRONT. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE TENNESSEE VALLEY THROUGH SATURDAY NIGHT. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS NOT ANTICIPATED AT THIS TIME. HOWEVER...SPOTTERS AND EMERGENCY MANAGERS ARE STRONGLY ENCOURAGED TO PROVIDE REPORTS OF FLASH FLOODING OR CLOSED ROADS TO THE NATIONAL WEATHER SERVICE. SL
In the hours before
Special weather statement, Sep 25, 2:38 PM CDT, 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 238 PM CDT FRI SEP 25 2009 ALZ002-003-252015- COLBERT-FRANKLIN- 238 PM CDT FRI SEP 25 2009 ...SIGNIFICANT WEATHER ALERT FOR SOUTHEASTERN COLBERT AND NORTHEASTERN FRANKLIN COUNTIES UNTIL 315 PM CDT... AT 237 PM CDT... DOPPLER RADAR WAS TRACKING A CLUSTER OF STRONG THUNDERSTORMS WITH INTENSE RAINFALL NEAR LITTLEVILLE...OR 7 MILES NORTHEAST OF RUSSELLVILLE...MOVING EAST AT 15 MPH. HEAVY DOWNPOURS ARE EXPECTED WITH THESE STORMS THAT COULD PRODUCE MINOR STREET FLOODING. * LOCATIONS IN OR NEAR THE PATH INCLUDE... SPRING VALLEY. LA GRANGE. WHITEOAK. WHITEOAK. RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE FROM THESE THUNDERSTORMS. THIS MAY RESULT IN BRIEF RUNOFF PROBLEMS AND PONDING OF WATER ON AREA ROADWAYS. KULA
Special weather statement, Sep 25, 2:53 PM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 253 PM CDT FRI SEP 25 2009 ALZ004-252045- LAWRENCE- 253 PM CDT FRI SEP 25 2009 ...SIGNIFICANT WEATHER ALERT FOR NORTHERN LAWRENCE COUNTY UNTIL 345 PM CDT... AT 251 PM CDT...DOPPLER RADAR WAS TRACKING A CLUSTER OF STRONG THUNDERSTORMS WITH INTENSE RAINFALL CENTERED NEAR WHITEOAK...OR 12 MILES SOUTHEAST OF MUSCLE SHOALS...MOVING NORTHEAST AT 10 MPH. HEAVY DOWNPOURS ARE EXPECTED WITH THIS STORM WHICH COULD PRODUCE MINOR STREET FLOODING. * LOCATIONS IN OR NEAR THE PATH INCLUDE... NE SMITH...HATTON. TOWN CREEK. NORTH COURTLAND...COURTLAND. RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE FROM THESE THUNDERSTORMS. THIS MAY RESULT IN BRIEF RUNOFF PROBLEMS AND PONDING OF WATER ON AREA ROADWAYS. KULA
The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 3:50 AM CDT | Flash Flood Watch | HUN | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 35 hr |
| Sep 25, 6:43 AM CDT | Dense Fog Advisory | HUN | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 3 hr |
| Sep 25, 3:28 PM CDT | Severe Thunderstorm Warning | HUN | Lawrence | 32 min |
| Sep 25, 4:00 PM CDT | Severe Thunderstorm Warning | HUN | Limestone, Morgan | 45 min |
| Sep 25, 4:36 PM CDT | Flash Flood Warning | HUN | Limestone | 41 min |
Nearby
Flash Flood Warnings in Alabama, 2009Every flash flood 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.