Alert archive / Alabama / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 241, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jul 13, 2010, 1:01 PM CDT for Blount County, Alabama. It was in force for 29 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
- Jul 13, 2010, 1:01 PM CDT (18:01 UTC)
- Expired
- Jul 13, 2010, 1:30 PM CDT
- In force
- 29 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
County Blount County, AL
The radar
The Birmingham radar (KBMX), 92 km from the middle of the area, began a volume at 18:04 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 |
|---|---|---|---|
| Jul 13, 11:05 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.0 hours before the alert went out and 203 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
- 766 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 630 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
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 Jul 13, 12:42 PM CDT, 19 minutes earlier.
Area forecast discussion, Jul 13, 12:42 PM CDT, 19 minutes before
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</html>Hazardous weather outlook, Jul 13, 11:20 AM CDT, 1 hour 41 minutes before
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Special weather statement, Jul 13, 10:49 AM CDT, 2 hours 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 1049 AM CDT TUE JUL 13 2010 ALZ011-014-131630- MARION AL-WINSTON AL- 1049 AM CDT TUE JUL 13 2010 ...SIGNIFICANT WEATHER ADVISORY FOR MARION AND WESTERN WINSTON COUNTIES UNTIL 1130 AM CDT... AT 1045 AM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG THUNDERSTORM NEAR TREMONT...OR 13 MILES NORTHWEST OF HAMILTON... MOVING EAST AT 45 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE... HAMILTON... HALEYVILLE... LYNN... WESTON... HACKLEBURG... 27
Local storm report, Jul 13, 11:33 AM CDT, 1 hour 28 minutes before
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</html>Local storm report, Jul 13, 11:56 AM CDT, 1 hour 5 minutes before
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</html>Special weather statement, Jul 13, 12:54 PM CDT, 7 minutes before
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</html>The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 11:13 AM CDT | Severe Thunderstorm Warning | BMX | Marion, Winston | 47 min |
| Jul 13, 11:31 AM CDT | Severe Thunderstorm Warning | BMX | Marion, Winston | 44 min |
| Jul 13, 2:00 PM CDT | Severe Thunderstorm Warning | BMX | Cherokee, Etowah | 45 min |
| Jul 13, 2:59 PM CDT | Severe Thunderstorm Warning | BMX | Calhoun, Cleburne | 46 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2010Every severe thunderstorm warning in 2010
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.