Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 214, NWS Huntsville, AL

December 10, 2012Jackson County, Madison County, Marshall County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Dec 10, 2012, 3:50 AM CST for Jackson County, Madison County, Marshall County, Alabama. It was in force for 25 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: Dec 10, 2012, 3:50 AM CST (09:50 UTC)
Expired: Dec 10, 2012, 4:15 AM CST
In force: 25 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

Counties Jackson County, AL, Madison County, AL, Marshall County, AL

The radar

The Northeast Alabama radar (KHTX), 38 km from the middle of the area, began a volume at 09:52 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, 9.8 hours before the alert went out and 168 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 8 J/kg
Mixed-layer CIN: -188 J/kg
Mixed-layer LCL: 1031 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 172 m²/s²
0-3 km storm-relative helicity: 221 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Dec 10, 3:50 AM CST, 0 minutes earlier.

Area forecast discussion, Dec 10, 3:50 AM CST, 0 minutes before

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Hazardous weather outlook, Dec 9, 9:35 PM CST, 6 hours 15 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
935 PM CST SUN DEC 9 2012

ALZ001>010-016-TNZ076-096-097-101000-
LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN-
MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN-
935 PM CST SUN DEC 9 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS
OF SOUTHERN MIDDLE TENNESSEE.

.DAY ONE...TONIGHT...

THE CHANCES FOR A FEW STRONG TO SEVERE THUNDERSTORMS WILL INCREASE
OVER NORTHWEST ALABAMA TOWARD MORNING AS A STRONG COLD FRONT
APPROACHES THE TENNESSEE VALLEY. STRONG TO DAMAGING WINDS WILL BE THE
MAIN THREAT ASSOCIATED WITH ANY STORMS THAT ARRIVE AHEAD OF THE
FRONT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

THE COLD FRONT WILL TRACK FROM WEST TO EAST ACROSS THE TENNESSEE
VALLEY ON MONDAY MORNING...PRODUCING A ROUND OF STRONG TO POSSIBLY
SEVERE THUNDERSTORMS. THESE STORMS WILL DEVELOP ALONG AND AHEAD OF
THE FRONT...ARRIVING IN NORTHWEST ALABAMA NEAR SUNRISE AND TRACKING
TOWARD NORTHEAST ALABAMA BY LATE MORNING. THE STRONGEST STORMS WILL
BE CAPABLE OF PRODUCING STRONG TO DAMAGING WINDS...WITH SPEEDS TO 70
MPH POSSIBLE. THE THUNDERSTORM THREAT IS EXPECTED TO END LATE MONDAY
AFTERNOON AS THE FRONT TRACKS OFF TO OUR SOUTHEAST. IN
TOTAL...RAINFALL AMOUNTS OF ONE TO TWO INCHES WILL BE POSSIBLE BUT
RECENT DRY CONDITIONS SHOULD PREVENT SIGNIFICANT FLASH FLOODING.

.SPOTTER CALL TO ACTION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS
POSSIBLE ON MONDAY MORNING.

TT

In the hours before

Special weather statement, Dec 10, 1:15 AM CST, 2 hours 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
115 AM CST MON DEC 10 2012

ALZ001>003-100800-
LAUDERDALE AL-COLBERT AL-FRANKLIN AL-
115 AM CST MON DEC 10 2012

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL LAUDERDALE...WESTERN
COLBERT AND NORTHWESTERN FRANKLIN COUNTIES UNTIL 200 AM CST...

AT 111 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 11 MILES
EAST OF WALNUT GROVE TO BLAIR...MOVING EAST AT 50 MPH.

HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 50 MPH WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
FLORENCE...SHEFFIELD...TUSCUMBIA...UNDERWOOD-PETERSVILLE...CHEROKEE
AND SAINT FLORIAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING. LIGHTNING CAN STRIKE SEVERAL MILES AWAY FROM
THE PARENT THUNDERSTORM. SEEK SAFE SHELTER INSIDE A BUILDING OR
VEHICLE.

&&

LAT...LON 3488 8810 3500 8791 3500 8740 3451 8790
      3452 8814
TIME...MOT...LOC 0711Z 257DEG 42KT 3503 8786 3451 8872

RSB

Special weather statement, Dec 10, 1:50 AM CST, 2 hours before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
150 AM CST MON DEC 10 2012

ALZ001>005-100830-
LAUDERDALE AL-LAWRENCE AL-COLBERT AL-FRANKLIN AL-LIMESTONE AL-
150 AM CST MON DEC 10 2012

...SIGNIFICANT WEATHER ADVISORY FOR LAUDERDALE...NORTHWESTERN
LAWRENCE...COLBERT...FRANKLIN AND NORTHWESTERN LIMESTONE COUNTIES
UNTIL 230 AM CST...

AT 148 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 12 MILES
NORTH OF UNDERWOOD-PETERSVILLE TO VERONA...AND MOVING EAST AT 45 MPH.

HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 50 MPH WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
FLORENCE...MUSCLE SHOALS...SHEFFIELD...RUSSELLVILLE...TUSCUMBIA...
RED BAY...UNDERWOOD-PETERSVILLE...CHEROKEE...TOWN CREEK...
ROGERSVILLE...KILLEN...PHIL CAMPBELL...LITTLEVILLE...LEIGHTON...
LEXINGTON...VINA...ANDERSON...SAINT FLORIAN...HODGES AND LESTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING. LIGHTNING CAN STRIKE SEVERAL MILES AWAY FROM
THE PARENT THUNDERSTORM. SEEK SAFE SHELTER INSIDE A BUILDING OR
VEHICLE.

&&

LAT...LON 3480 8811 3499 8795 3500 8710 3432 8771
      3432 8817
TIME...MOT...LOC 0748Z 259DEG 34KT 3504 8762 3416 8866

RSB

Special weather statement, Dec 10, 2:25 AM CST, 1 hour 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
225 AM CST MON DEC 10 2012

ALZ001>007-TNZ076-096-097-100915-
MADISON AL-MORGAN AL-LAUDERDALE AL-LAWRENCE AL-COLBERT AL-
FRANKLIN AL-LIMESTONE AL-MOORE TN-LINCOLN TN-FRANKLIN TN-
225 AM CST MON DEC 10 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MADISON...
NORTHWESTERN MORGAN...EASTERN LAUDERDALE...LAWRENCE...EASTERN
COLBERT...FRANKLIN...LIMESTONE...SOUTH CENTRAL MOORE...LINCOLN AND
NORTHWESTERN FRANKLIN COUNTIES UNTIL 315 AM CST...

AT 224 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 17 MILES
SOUTH OF LAWRENCEBURG TO FULTON...AND MOVING EAST AT 45 MPH.

HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 50 MPH WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
DECATUR...ATHENS...RUSSELLVILLE...FAYETTEVILLE...MOULTON...HAZEL
GREEN...HARVEST...ESTILL SPRINGS...TRINITY...TOWN CREEK...
ROGERSVILLE...PHIL CAMPBELL...ARDMORE...LITTLEVILLE...LEIGHTON...
NORTH COURTLAND...COURTLAND...HILLSBORO...ELKMONT AND VINA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING. LIGHTNING CAN STRIKE SEVERAL MILES AWAY FROM
THE PARENT THUNDERSTORM. SEEK SAFE SHELTER INSIDE A BUILDING OR
VEHICLE.

&&

LAT...LON 3500 8730 3499 8684 3514 8683 3531 8600
      3430 8735 3432 8817
TIME...MOT...LOC 0822Z 256DEG 65KT 3501 8726 3419 8835

RSB

Special weather statement, Dec 10, 3:15 AM CST, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
315 AM CST MON DEC 10 2012

ALZ001>007-009-TNZ076-096-097-101000-
MADISON AL-MORGAN AL-LAUDERDALE AL-LAWRENCE AL-COLBERT AL-JACKSON AL-
FRANKLIN AL-LIMESTONE AL-MOORE TN-LINCOLN TN-FRANKLIN TN-
315 AM CST MON DEC 10 2012

...SIGNIFICANT WEATHER ADVISORY FOR MADISON...MORGAN...EASTERN
LAUDERDALE...LAWRENCE...EASTERN COLBERT...NORTHWESTERN JACKSON...
EASTERN FRANKLIN...LIMESTONE...MOORE...LINCOLN AND NORTHWESTERN
FRANKLIN COUNTIES UNTIL 400 AM CST...

AT 314 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 11 MILES
NORTHWEST OF LYNCHBURG TO 8 MILES NORTHWEST OF HALEYVILLE...AND
MOVING EAST AT 50 MPH.

HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 50 MPH WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
HUNTSVILLE...DECATUR...MADISON...ATHENS...HARTSELLE...FAYETTEVILLE...
WINCHESTER...MOORES MILL...LYNCHBURG...MERIDIANVILLE...MOULTON...
REDSTONE ARSENAL...HAZEL GREEN...HARVEST...DECHERD...ESTILL
SPRINGS...NEW MARKET...TRINITY...PRICEVILLE AND TOWN CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING. LIGHTNING CAN STRIKE SEVERAL MILES AWAY FROM
THE PARENT THUNDERSTORM. SEEK SAFE SHELTER INSIDE A BUILDING OR
VEHICLE.

&&

LAT...LON 3541 8626 3539 8628 3534 8624 3533 8620
      3536 8616 3530 8595 3431 8671 3431 8777
      3500 8723 3499 8684 3514 8683 3537 8658
      3532 8642
TIME...MOT...LOC 0912Z 259DEG 42KT 3538 8654 3434 8768

RSB

The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 10, 1:15 AM CST	Special Weather Statement	HUN	Colbert, Lauderdale	45 min
Dec 10, 1:50 AM CST	Special Weather Statement	HUN	Colbert, Franklin, Lauderdale	40 min
Dec 10, 2:25 AM CST	Special Weather Statement	HUN	Franklin, Lawrence, Limestone	50 min
Dec 10, 3:15 AM CST	Special Weather Statement	HUN	Lawrence, Limestone, Madison, Morgan	45 min
Dec 10, 4:09 AM CST	Special Weather Statement	HUN	Jackson, Marshall	36 min
Dec 10, 4:45 AM CST	Special Weather Statement	HUN	DeKalb	30 min
Dec 10, 5:16 AM CST	Special Weather Statement	HUN	DeKalb	14 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every severe thunderstorm warning in 2012

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.