Alert archive / Alabama / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 178, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Jun 15, 2009, 6:18 PM CDT for Lauderdale County, Limestone County, Alabama. It was in force for 42 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
- Jun 15, 2009, 6:18 PM CDT (23:18 UTC)
- Expired
- Jun 15, 2009, 7:00 PM CDT
- In force
- 42 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
Counties Lauderdale County, AL, Limestone County, AL
The radar
The Northeast Alabama radar (KHTX), 113 km from the middle of the area, began a volume at 23:21 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 |
|---|---|---|---|
| Jun 15, 5:35 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 11.3 hours before the alert went out and 156 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
- 1321 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 700 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.1
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 Jun 15, 3:29 PM CDT, 2 hours 49 minutes earlier.
Area forecast discussion, Jun 15, 3:29 PM CDT, 2 hours 49 minutes before
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</html>Hazardous weather outlook, Jun 15, 5:30 PM CDT, 48 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE HUNTSVILLE AL 530 PM CDT MON JUN 15 2009 ALZ001>010-016-TNZ076-096-097-161000- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN- MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN- 530 PM CDT MON JUN 15 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...TONIGHT... A LARGE CLUSTER OF SHOWERS AND THUNDERSTORMS WILL PUSH SOUTHWARD INTO THE TENNESSEE VALLEY THIS EVENING. SOME OF THESE STORMS WILL BE STRONG TO SEVERE WITH THE PRIMARY THREATS BEING DAMAGING WIND GUSTS TO NEAR 60 MPH AND LARGE HAIL. IN ADDITION...LOCALLY HEAVY RAINFALL AND FREQUENT CLOUD TO GROUND LIGHTNING WILL BE A THREAT WITH ANY STORMS THAT DEVELOP. PATCHY DENSE FOG WILL ALSO BE POSSIBLE AGAIN OVERNIGHT...ESPECIALLY IN AREAS THAT RECEIVE RAINFALL AND NEAR BODIES OF WATER. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE TUESDAY AND WEDNESDAY AS UPPER LEVEL DISTURBANCES CONTINUE TO MOVE OVER THE REGION. A FEW STRONG STORMS ARE AGAIN POSSIBLE WITH THE POTENTIAL FOR BRIEF HEAVY RAINFALL...GUSTY WINDS AND FREQUENT LIGHTNING. BY THURSDAY...A STRONG RIDGE OF HIGH PRESSURE AT THE SURFACE AND ALOFT IS EXPECTED TO BUILD ACROSS THE SOUTHEAST STATES. AFTERNOON TEMPERATURES MAY RUN CLOSE TO TEN DEGREES ABOVE NORMAL WITH HEAT INDICES EXCEEDING 100 DEGREES. PEOPLE ARE ENCOURAGED TO EXERCISE CAUTION WHEN CONDUCTING OUTDOOR ACTIVITIES. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS IS LIKELY THIS EVENING.
In the hours before
Special weather statement, Jun 15, 5:58 PM CDT, 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HUNTSVILLE AL 558 PM CDT MON JUN 15 2009 ALZ001-005-160000- LAUDERDALE-LIMESTONE- 558 PM CDT MON JUN 15 2009 ...SIGNIFICANT WEATHER ALERT FOR EASTERN LAUDERDALE AND NORTHWESTERN LIMESTONE COUNTIES UNTIL 700 PM CDT... ...SEVERE THUNDERSTORMS TO IMPACT THESE AREAS BETWEEN 630 AND 700 PM... AT 557 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING SEVERE THUNDERSTORMS MOVING ACROSS CENTRAL WAYNE AND LAWRENCE COUNTIES IN TENNESSEE...ROUGHLY FROM COLLINWOOD TO LEOMA...MOVING SOUTHEAST AT 25 MPH. DAMAGING STRAIGHT LINE WINDS...LARGE HAIL...AND INTENSE CLOUD TO GROUND LIGHTNING ARE EXPECTED WITH THESE STORMS AS THEY CROSS THE STATE LINE. ON THEIR CURRENT TRACK...THE SEVERE THUNDERSTORMS WILL CROSS INTO LAUDERDALE AND LIMESTONE COUNTIES...NEAR THE LEXINGTON...GOOD SPRINGS...AND MOUNT ROZELL AREAS...BETWEEN 630 AND 700 PM CDT. FOR THESE REASONS...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR NORTHERN ALABAMA AND CENTRAL TENNESSEE...AND IS IN EFFECT UNTIL MIDNIGHT CDT. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL TELEVISION STATIONS FOR LATER STATEMENTS AND WARNINGS CONCERNING THIS WEATHER SITUATION. BCC
The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 12:36 AM CDT | Dense Fog Advisory | HUN | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 7 hr |
| Jun 15, 6:38 PM CDT | Tornado Warning | HUN | Lauderdale, Limestone | 37 min |
| Jun 15, 6:44 PM CDT | Severe Thunderstorm Warning | HUN | Colbert, Lauderdale | 46 min |
| Jun 15, 6:54 PM CDT | Severe Thunderstorm Warning | HUN | Lauderdale, Lawrence, Limestone | 51 min |
| Jun 15, 6:57 PM CDT | Flash Flood Warning | HUN | Lauderdale | 93 min |
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.