Alert archive / Alabama / Special Weather Statements in 2012
Special Weather Statement, NWS Huntsville, AL
NWS Huntsville, AL issued this special weather statement at Aug 4, 2012, 1:46 PM CDT for Lauderdale County, Alabama. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 4, 2012, 1:46 PM CDT (18:46 UTC)
- Expired
- Aug 4, 2012, 2:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Huntsville, AL
County Lauderdale County, AL
The radar
The Northeast Alabama radar (KHTX), 117 km from the middle of the area, began a volume at 18:45 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
Nashville Metro, TN (KBNA), launched 12:00Z, 6.8 hours before the alert went out and 163 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
- 2994 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 630 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 4, 12:46 PM CDT, 1 hour earlier.
Area forecast discussion, Aug 4, 12:46 PM CDT, 1 hour before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE HUNTSVILLE AL 1246 PM CDT SAT AUG 4 2012 .UPDATE... FOR 18Z TAFS && .DISCUSSION... /ISSUED 1021 AM CDT SAT AUG 4 2012/ TEMPERATURES ACROSS THE TENNESSEE VALLEY THIS MORNING ARE CURRENTLY IN THE LOWER 80S...WITH THE EXCEPTION OF FORT PAYNE REPORTING 79F AT THIS HOUR. SFC HIGH PRESSURE IS ANCHORED JUST SOUTH AND WEST OF THE AREA (WITH 500MB RIDGING IN PLACE ACROSS SRN OK/NRN TX)...WITH W/NW FLOW IN PLACE ACROSS THE CWFA TODAY. UPSTREAM...SHOWER AND TSTORM ACTIVITY IS APPROACHING AS A DISTURBANCE RIDES AROUND THE PERIPHERY OF THE RIDGE. THIS ACTIVITY SHOULD MAKE IT INTO THE AREA LATER THIS AFTERNOON...AND AS SUCH...HAVE REORIENTED POPS TO FAVOR AFTN DEVELOPMENT (AS OPPOSED TO THE 50-POPS ALL DAY). HAVE ALSO MADE A FEW TWEAKS TO CURRENT SKY COVER GRIDS...BUT ALL OTHER PUBLIC FORECAST GRIDS LOOK GREAT SO NO OTHER CHANGES WERE NECESSARY. UPDATED ZONES WILL BE SENT SHORTLY. 12 && .AVIATION... FOR 18Z TAFS... SHOWERS AND THUNDERSTORMS WILL LINGER THRU THIS EVENING AT BOTH TERMINALS...WITH BRIEF IFR CONDITIONS POSSIBLE IN HEAVIER TSTORM ACTIVITY. AS THIS ACTIVITY DISSIPATES...PARTLY CLOUDY SKIES ARE EXPECTED OVERNIGHT. FOG DEVELOPMENT WILL DEPEND HEAVILY ON THE RAINFALL RECEIVED AT EITHER TERMINAL...SO WILL NOT INCLUDE IN THIS ISSUANCE ATTM. SHOWERS AND STORMS WILL DEVELOP AGAIN TOWARD THE END OF THE TAF PERIOD SUNDAY. 12 && .HUN WATCHES/WARNINGS/ADVISORIES... AL...NONE. TN...NONE. && FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WEATHER.GOV/HUNTSVILLE.
Hazardous weather outlook, Aug 4, 12:49 PM CDT, 57 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HUNTSVILLE AL 1249 PM CDT SAT AUG 4 2012 ALZ001>010-016-TNZ076-096-097-050300- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN- MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN- 1249 PM CDT SAT AUG 4 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...THIS AFTERNOON AND TONIGHT... SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND TONIGHT AS AN UPPER LEVEL DISTURBANCE APPROACHES FROM THE WEST. A FEW STORMS COULD BE STRONG IN NATURE...WITH THE POTENTIAL FOR GUSTY WINDS...FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY... SCATTERED THUNDERSTORMS MAY BECOME A BIT MORE ENHANCED SUNDAY...AS A COLD FRONT SETTLING INTO THE REGION INTERACTS WITH ADDITIONAL UPPER DISTURBANCES. SOME STORMS MAY BE STRONG TO MARGINALLY SEVERE...WITH DAMAGING WIND GUSTS...FREQUENT CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY DOWNPOURS THE MAIN WEATHER HAZARDS. SLOW MOVING THUNDERSTORMS IMPACTING THE SAME AREAS MAY ALSO RESULT IN MINOR FLOODING OF ROADWAYS AND LOW LYING AREAS. ISOLATED TO SCATTERED THUNDERSTORMS ARE THEN POSSIBLE MONDAY THROUGH FRIDAY. A FEW STRONG STORMS REMAIN POSSIBLE AS WELL...CAPABLE OF GUSTY WINDS...FREQUENT LIGHTNING AND BRIEF HEAVY RAINFALL. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS NOT ANTICIPATED AT THIS TIME. 12
In the hours before
Special weather statement, Aug 4, 1:46 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
146 PM CDT SAT AUG 4 2012
ALZ001-002-004-041930-
LAUDERDALE AL-LAWRENCE AL-COLBERT AL-
146 PM CDT SAT AUG 4 2012
...SIGNIFICANT WEATHER ADVISORY FOR EASTERN LAUDERDALE...NORTH
CENTRAL LAWRENCE AND EAST CENTRAL COLBERT COUNTIES UNTIL 230 PM
CDT...
AT 140 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS
TRACKING A STRONG THUNDERSTORM NEAR KILLEN...OR 8 MILES EAST OF
MUSCLE SHOALS...MOVING NORTHEAST AT 5 MPH.
WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
ROGERSVILLE AND KILLEN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A
SAFE SHELTER INSIDE A BUILDING OR VEHICLE.
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR
ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL
WEATHER SERVICE.
&&
LAT...LON 3480 8725 3479 8726 3478 8728 3476 8727
3467 8749 3481 8762 3499 8743
TIME...MOT...LOC 1840Z 232DEG 5KT 3479 8750
CAThe office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 2:10 PM CDT | Special Weather Statement | HUN | Madison | 50 min |
| Aug 4, 2:19 PM CDT | Special Weather Statement | HUN | Lauderdale | 41 min |
| Aug 4, 2:35 PM CDT | Flash Flood Warning | HUN | Lauderdale | 3 hr |
| Aug 4, 3:13 PM CDT | Special Weather Statement | HUN | Lauderdale | 32 min |
| Aug 4, 3:34 PM CDT | Special Weather Statement | HUN | Colbert | 26 min |
| Aug 4, 4:07 PM CDT | Special Weather Statement | HUN | Limestone | 38 min |
| Aug 4, 4:19 PM CDT | Flash Flood Warning | HUN | Limestone, Morgan | 3 hr |
| Aug 4, 4:34 PM CDT | Special Weather Statement | HUN | Lawrence | 26 min |
| Aug 4, 4:59 PM CDT | Special Weather Statement | HUN | Morgan | 31 min |
Nearby
Special Weather Statements in Alabama, 2012Every special weather statement 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.