Alert archive / Alabama / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 68, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Apr 20, 2006, 2:40 PM CDT for Cullman 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 counties it named.
The facts
- Issued
- Apr 20, 2006, 2:40 PM CDT (19:40 UTC)
- Expired
- Apr 20, 2006, 3:30 PM CDT
- In force
- 50 min
- Issued by
- NWS Huntsville, AL
- Area
- Counties, with a storm outline in the text
County Cullman County, AL
The radar
The Birmingham radar (KBMX), 107 km from the middle of the area, began a volume at 19:40 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 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, 11:38 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 7.7 hours before the alert went out and 106 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
- 488 J/kg
- Mixed-layer CIN
- -279 J/kg
- Mixed-layer LCL
- 1148 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -119 m²/s²
- 0-3 km storm-relative helicity
- -98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 Huntsville, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 20, 10:45 AM CDT, 3 hours 55 minutes earlier.
Area forecast discussion, Apr 20, 10:45 AM CDT, 3 hours 55 minutes before
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</html>Hazardous weather outlook, Apr 20, 12:40 PM CDT, 2 hours before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HUNTSVILLE AL 1240 PM CDT THU APR 20 2006 ALZ001>010-016-TNZ076-096-097-210230- COLBERT-CULLMAN-DE KALB-FRANKLIN AL-FRANKLIN TN-JACKSON-LAUDERDALE- LAWRENCE-LIMESTONE-LINCOLN-MADISON-MARSHALL-MOORE-MORGAN- 1240 PM CDT THU APR 20 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...THROUGH TONIGHT... SCATTERED TO NUMEROUS THUNDERSTORMS WILL DEVELOP THROUGHOUT THE AFTERNOON AND EVENING HOURS AS UPPER LEVEL ENERGY MOVES THROUGH AND INTERACTS WITH A VERY UNSTABLE AIR MASS. SOME OF THESE THUNDERSTORMS MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS BEING THE MAIN THREATS. LOCALLY HEAVY RAINFALL WILL ALSO BE A POSSIBILITY DUE TO THE SLOW MOVEMENT OF THE THUNDERSTORMS. THUNDERSTORMS WILL GRADUALLY DIMINISH IN COVERAGE AND INTENSITY OVERNIGHT...ALTHOUGH AN ISOLATED STRONG TO SEVERE STORM OR TWO CANNOT BE RULED OUT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... A COLD FRONT WILL MOVE IN FROM THE WEST ON FRIDAY ALONG WITH A STRONG UPPER TROUGH. THAT COMBINATION WILL RESULT IN MORE THUNDERSTORM COVERAGE OVER THE AREA...AND A SLIGHT RISK OF SEVERE THUNDERSTORMS WITH DAMAGING WINDS AND ISOLATED TORNADOES THE MAIN THREATS. THE ACTIVITY COULD EXTEND WELL INTO THE EVENING...THEN DIMINISH OVERNIGHT AND EARLY SATURDAY AS THE FRONT MOVES THROUGH. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL MAY BE NECESSARY AT TIMES THROUGH FRIDAY.
In the hours before
Special weather statement, Apr 20, 9:09 AM CDT, 5 hours 31 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 909 AM CDT THU APR 20 2006 ALZ001-201530- LAUDERDALE- 909 AM CDT THU APR 20 2006 ...SIGNIFICANT WEATHER ALERT FOR LAUDERDALE COUNTY UNTIL 1030 AM CDT... AT 907 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR CHEROKEE...OR 14 MILES EAST OF IUKA...MOVING NORTHEAST AT 30 MPH. ONE HALF INCH DIAMETER HAIL AND WINDS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. * LOCATIONS IN OR NEAR THE PATH INCLUDE... OAKLAND. THREET. UNDERWOOD-PETERSVILLE. ST. FLORIAN. KILLEN. GREEN HILL. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS CONCERNING THIS WEATHER SITUATION. SS
Special weather statement, Apr 20, 9:09 AM CDT, 5 hours 31 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 909 AM CDT THU APR 20 2006 ALZ001-201530- LAUDERDALE- 909 AM CDT THU APR 20 2006 ...SIGNIFICANT WEATHER ALERT FOR LAUDERDALE COUNTY UNTIL 1030 AM CDT... AT 907 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR CHEROKEE...OR 14 MILES EAST OF IUKA...MOVING NORTHEAST AT 30 MPH. ONE HALF INCH DIAMETER HAIL AND WINDS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. * LOCATIONS IN OR NEAR THE PATH INCLUDE... OAKLAND. THREET. UNDERWOOD-PETERSVILLE. ST. FLORIAN. KILLEN. GREEN HILL. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS CONCERNING THIS WEATHER SITUATION.
Local storm report, Apr 20, 10:27 AM CDT, 4 hours 13 minutes before
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</html>Special weather statement, Apr 20, 10:31 AM CDT, 4 hours 9 minutes before
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</html>Special weather statement, Apr 20, 11:35 AM CDT, 3 hours 5 minutes before
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</html>Local storm report, Apr 20, 1:07 PM CDT, 1 hour 33 minutes before
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</html>The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 7:38 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb | 25 min |
| Apr 19, 7:44 PM CDT | Severe Thunderstorm Warning | HUN | Jackson | 22 min |
| Apr 19, 7:44 PM CDT | Severe Thunderstorm Warning | HUN | Cullman | 46 min |
| Apr 19, 7:55 PM CDT | Severe Thunderstorm Warning | HUN | Cullman | 50 min |
| Apr 19, 8:22 PM CDT | Flash Flood Warning | HUN | Cullman | 3 hr |
| Apr 19, 8:27 PM CDT | Severe Thunderstorm Warning | HUN | Cullman | 48 min |
| Apr 19, 9:13 PM CDT | Severe Thunderstorm Warning | HUN | Cullman | 47 min |
| Apr 19, 11:13 PM CDT | Flash Flood Warning | HUN | Cullman | 6 hr |
| Apr 19, 11:52 PM CDT | Severe Thunderstorm Warning | HUN | Morgan | 38 min |
| Apr 20, 12:28 AM CDT | Severe Thunderstorm Warning | HUN | Morgan | 47 min |
| Apr 20, 8:04 AM CDT | Severe Thunderstorm Warning | HUN | Colbert | 41 min |
| Apr 20, 9:44 AM CDT | Severe Thunderstorm Warning | HUN | Lauderdale | 31 min |
| Apr 20, 10:07 AM CDT | Severe Thunderstorm Warning | HUN | Limestone | 38 min |
| Apr 20, 11:16 AM CDT | Severe Thunderstorm Warning | HUN | Franklin | 19 min |
| Apr 20, 3:16 PM CDT | Severe Thunderstorm Warning | HUN | Marshall | 44 min |
| Apr 20, 3:28 PM CDT | Severe Thunderstorm Warning | HUN | Cullman | 33 min |
| Apr 20, 4:12 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb | 33 min |
| Apr 20, 4:35 PM CDT | Severe Thunderstorm Warning | HUN | Marshall | 25 min |
| Apr 20, 5:33 PM CDT | Flash Flood Warning | HUN | Cullman | 3 hr |
| Apr 20, 5:36 PM CDT | Severe Thunderstorm Warning | HUN | Cullman | 39 min |
| Apr 20, 5:38 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb, Marshall | 52 min |
| Apr 20, 6:10 PM CDT | Severe Thunderstorm Warning | HUN | Cullman, Morgan | 50 min |
| Apr 20, 6:14 PM CDT | Tornado Warning | HUN | Cullman, Morgan | 46 min |
| Apr 20, 6:27 PM CDT | Tornado Warning | HUN | Marshall | 33 min |
| Apr 20, 6:42 PM CDT | Severe Thunderstorm Warning | HUN | Morgan | 33 min |
| Apr 20, 6:58 PM CDT | Severe Thunderstorm Warning | HUN | Madison | 47 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2006Every severe thunderstorm warning in 2006
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.