Alert archive / Alabama / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 82, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Apr 21, 2006, 2:43 AM CDT for Cullman County, Alabama. It was in force for 62 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 21, 2006, 2:43 AM CDT (07:43 UTC)
- Expired
- Apr 21, 2006, 3:45 AM CDT
- In force
- 62 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 07:43 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 00:00Z, 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
- 1511 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1343 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 6.9
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, 9:34 PM CDT, 5 hours 9 minutes earlier.
Area forecast discussion, Apr 20, 9:34 PM CDT, 5 hours 9 minutes before
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</html>Hazardous weather outlook, Apr 20, 9:39 PM CDT, 5 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HUNTSVILLE AL 939 PM CDT THU APR 20 2006 ALZ001>010-016-TNZ076-096-097-211000- COLBERT-CULLMAN-DE KALB-FRANKLIN AL-FRANKLIN TN-JACKSON-LAUDERDALE- LAWRENCE-LIMESTONE-LINCOLN-MADISON-MARSHALL-MOORE-MORGAN- 939 PM CDT THU APR 20 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...THROUGH TONIGHT... ISOLATED TO SCATTERED REDEVELOPMENT OF THUNDERSTORMS WILL OCCUR LATE TONIGHT AS ANOTHER WEAK UPPER LEVEL SYSTEM TRAVELS EAST OUT OF THE MID SOUTH. THE AREA WITH MOST RISK OF ADDITIONAL STORMS WILL BE WEST OF INTERSTATE 65 AFTER 1 AM. BY DAYBREAK...THUNDERSTORMS WILL BE POSSIBLE JUST ABOUT ANYWHERE...BUT AREAL COVERAGE SHOULD BE SCATTERED. LARGE HAIL WILL BE THE MAIN THREAT LATE TONIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... A POTENTIALLY MORE SIGNIFICANT SEVERE WEATHER EVENT IS POSSIBLE ON FRIDAY AFTERNOON AND EVENING AS A STRONGER UPPER LEVEL SYSTEM PULLS OUT OF THE SOUTHERN PLAINS AND INTO THE TENNESSEE VALLEY. MUCH LIKE THE LAST TWO DAYS...ISOLATED TO SCATTERED THUNDERSTORMS WILL OCCUR IN THE MORNING HOURS...SOME WITH A THREAT OF LARGE HAIL AND DAMAGING WINDS. THE MORE WIDESPREAD THREAT OF SEVERE THUNDERSTORMS EXISTS FROM 6 PM TO MIDNIGHT FRIDAY EVENING AS A SURFACE LOW AND COLD FRONT MOVE EAST THROUGH MIDDLE TENNESSEE AND ALABAMA. THESE STORMS WILL BE CAPABLE OF LARGE HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL MAY BE NECESSARY AT TIMES THROUGH FRIDAY. KULA
In the hours before
Local storm report, Apr 20, 8:57 PM CDT, 5 hours 46 minutes before
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</html>Special weather statement, Apr 20, 11:49 PM CDT, 2 hours 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 1149 PM CDT THU APR 20 2006 ALZ007-210530- MORGAN- 1149 PM CDT THU APR 20 2006 ...SIGNIFICANT WEATHER ALERT FOR MORGAN COUNTY UNTIL 1230 AM CDT... AT 1147 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12 MILES NORTH OF ADDISON...OR 12 MILES SOUTHWEST OF HARTSELLE...MOVING EAST AT 20 MPH. ONE HALF INCH DIAMETER HAIL IS POSSIBLE WITH THIS STORM. * LOCATIONS IN OR NEAR THE PATH INCLUDE... DANVILLE. MASSEY. FLINT CITY. LEESDALE. SOMERVILLE. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS CONCERNING THIS WEATHER SITUATION. KULA
The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 7:36 PM CDT | Severe Thunderstorm Warning | HUN | Jackson | 39 min |
| Apr 20, 7:44 PM CDT | Severe Thunderstorm Warning | HUN | Madison | 31 min |
| Apr 21, 12:49 AM CDT | Severe Thunderstorm Warning | HUN | Limestone | 41 min |
| Apr 21, 3:10 AM CDT | Severe Thunderstorm Warning | HUN | Marshall | 53 min |
| Apr 21, 3:43 AM CDT | Severe Thunderstorm Warning | HUN | Jackson | 33 min |
| Apr 21, 4:00 AM CDT | Flash Flood Watch | HUN | Cullman, DeKalb, Marshall | 21 hr |
| Apr 21, 4:43 AM CDT | Severe Thunderstorm Warning | HUN | Marshall | 27 min |
| Apr 21, 5:02 AM CDT | Severe Thunderstorm Warning | HUN | Jackson | 43 min |
| Apr 21, 5:09 AM CDT | Severe Thunderstorm Warning | HUN | Madison | 21 min |
| Apr 21, 5:37 AM CDT | Severe Thunderstorm Warning | HUN | Morgan | 38 min |
| Apr 21, 6:15 AM CDT | Severe Thunderstorm Warning | HUN | Morgan | 45 min |
| Apr 21, 6:21 AM CDT | Severe Thunderstorm Warning | HUN | Morgan | 39 min |
| Apr 21, 6:34 AM CDT | Severe Thunderstorm Warning | HUN | Madison | 41 min |
| Apr 21, 7:01 AM CDT | Severe Thunderstorm Warning | HUN | Limestone | 29 min |
| Apr 21, 3:18 PM CDT | Severe Thunderstorm Warning | HUN | Jackson | 18 min |
| Apr 21, 3:20 PM CDT | Severe Thunderstorm Warning | HUN | Jackson, Madison | 40 min |
| Apr 21, 3:26 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb | 49 min |
| Apr 21, 3:55 PM CDT | Severe Thunderstorm Warning | HUN | Jackson | 35 min |
| Apr 21, 4:15 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb | 15 min |
| Apr 21, 4:30 PM CDT | Severe Thunderstorm Warning | HUN | Jackson | 15 min |
| Apr 21, 5:36 PM CDT | Severe Thunderstorm Warning | HUN | Marshall | 24 min |
| Apr 21, 6:40 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb | 35 min |
| Apr 20, 8:04 PM CDT | Severe Thunderstorm Warning | HUN | Franklin | 35 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.