Alert archive / Alabama / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 246, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jun 12, 2006, 12:39 PM CDT for Shelby County, Talladega County, Alabama. It was in force for 39 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 12, 2006, 12:39 PM CDT (17:39 UTC)
- Expired
- Jun 12, 2006, 1:18 PM CDT
- In force
- 39 min
- Issued by
- NWS Birmingham, AL
- Area
- Counties, with a storm outline in the text
Counties Shelby County, AL, Talladega County, AL
The radar
The Birmingham radar (KBMX), 37 km from the middle of the area, began a volume at 17:42 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 12:00Z, 5.7 hours before the alert went out and 38 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
- 1156 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 960 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
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 Birmingham, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 12, 5:03 AM CDT, 7 hours 36 minutes earlier.
Area forecast discussion, Jun 12, 5:03 AM CDT, 7 hours 36 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BIRMINGHAM AL 503 AM CDT MON JUN 12 2006 .SHORT TERM...(TODAY THROUGH THURSDAY)... RENEGADE SHOWERS ALONG AN OLD BOUNDARY ARE FINALLY WEAKENING ACROSS PORTIONS OF SOUTHEAST ALABAMA THIS MORNING. ANOTHER AREA OF SHOWERS AND THUNDERSTORMS CONTINUE TO FIRE ALONG A WEAK COLD FRONT ACROSS THE TENNESSEE VALLEY. THIS COLD FRONT WILL MAKE ITS WAY SOUTHWARD ACROSS THE AREA THROUGHOUT THE DAY GIVING THE AREA ITS ONE AND LIKELY ONLY CHANCE FOR PRECIP OVER THE NEXT SEVEN DAYS. EXPECT THE WEAKENING LINE OF PRECIP ACROSS NORTH ALABAMA TO CONTINUE MOVING SOUTHEAST THIS MORNING. WITH AN ACTUAL FOCUS MECHANISM AND WEAK CONVERGENCE ALONG THE FRONT...EXPECT SHOWERS AND THUNDERSTORMS TO RE-FIRE THIS AFTERNOON DURING THE PEAK HEATING HOURS WHERE INSTABILITY WILL BE MAXIMIZED. EXPECT THE BEST COVERAGE TO BE EAST OF INTERSTATE 65 WHERE CHANCE POPS ARE WARRANTED. TOUGH TEMPERATURE FORECAST THIS AFTERNOON SO HAVE STAYED CLOSE TO MAV GUIDANCE. WITH INCREASING CLOUD COVER NORTH AND THE CHANCE FOR SHOWERS AND THUNDERSTORMS THIS AFTERNOON...THIS AREA WILL BE A FEW DEGREES COOLER THAN YESTERDAY. WARMEST TEMEPRATURES OF MID 90S WILL RESIDE ACROSS SOUTHWEST ALABAMA WHERE CLOUD COVER AND CONVECTION WILL BE LESS. FOR TONIGHT AND TUESDAY...COLD FRONT WILL CONTINUE ITS SLOW MOVEMENT ACROSS THE AREA. BELIEVE THE FRONT SHOULD BE SOUTH OF INTERSTATE 85 BY THIS EVENING...HOWEVER PLENTY WILL DEPEND ON THE TRACK OF T.S. ALBERTO. IF ALBERTO TAKES A MORE NORTHERLY MOVEMENT...THIS MAY KEEP THE FRONT A LITTLE FURTHER NORTH WHICH IN TURN WILL DIRECTLY INFLUENCE THE FORECAST FOR SOUTHEAST SECTIONS OF THE AREA. SO HAVE LEFT IN A SLIGHT CHANCE OF PRECIP FOR AREAS ROUGHLY SOUTH OF INTERSTATE 85 TO ACCOUNT FOR THIS UNCERTAINTY TONIGHT AND TUESDAY. TEMPERATURES WILL BE NORMAL TONIGHT AND TUESDAY WITH LOWS IN THE MID 60S AND HIGHS IN THE UPPER 80S. SKIES BEGIN TO CLEAR ON WEDNESDAY AS THE FRONT AND ALBERTO EXIT OUT OF THE PICTURE. HOT AND DRY WEATHER RETURN WEDNESDAY AND THURSDAY AS HIGH PRESSURE BUILDS INTO THE AREA. HIGH TEMPERATURES WILL ONCE AGAIN REACH THE 90S. .LONG TERM...(FRIDAY THROUGH SUNDAY)... ANOTHER HOT AND MOSTLY DRY WEEKEND IN STORE AS HIGH PRESSURE MOVES OFF TO THE EAST. THE AREA WILL FEEL A BIT MORE HUMIDITY AS MOISTURE FROM THE GULF RETURNS. DID INCLUDE A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS ON SUNDAY TO ACCOUNT FOR ANY ISOLATED CONVECTION THAT DEVELOPS IN THE AFTERNOON HOURS. && .PRELIMINARY POINT TEMPS/POPS... GADSDEN 90 62 86 59 / 40 10 10 10 ANNISTON 90 65 87 63 / 40 10 10 10 BIRMINGHAM 92 65 87 64 / 30 10 10 10 TUSCALOOSA 93 67 88 63 / 20 10 10 10 CALERA 93 67 87 65 / 30 10 10 10 AUBURN 91 66 89 65 / 30 20 10 10 MONTGOMERY 95 69 91 68 / 30 20 10 10 TROY 94 68 91 67 / 30 20 20 10 && .BMX WATCHES/WARNINGS/ADVISORIES... AL...NONE. && KNS/99
Hazardous weather outlook, Jun 12, 6:35 AM CDT, 6 hours 4 minutes before
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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.