Alert archive / Alabama / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 21, NWS Huntsville, AL

March 18, 2013Colbert County, Franklin County, Lawrence County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Mar 18, 2013, 12:59 PM CDT for Colbert County, Franklin County, Lawrence County, Alabama. It was in force for 31 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 18, 2013, 12:59 PM CDT (17:59 UTC)
Expired
Mar 18, 2013, 1:30 PM CDT
In force
31 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon

Counties Colbert County, AL, Franklin County, AL, Lawrence County, AL

The radar

The Columbus AFB radar (KGWX), 107 km from the middle of the area, began a volume at 17:59 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.

What was reported inside it

TimeReportWhereRemark
Mar 18, 1:03 PM CDTHAIL 0.51 Ssw Russellville, ALMARBLE SIZED HAIL REPORTED JUST SOUTH OF RUSSELLVILLE
Mar 18, 1:10 PM CDTHAIL 0.52 S Town Creek, ALDIME SIZED HAIL REPORTED NORTH OF HATTON
Mar 18, 1:18 PM CDTHAIL 1.5S Hatton, ALSILVER DOLLAR SIZED HAIL REPORTED IN HATTON

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 18, 8:09 AM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.0 hours before the alert went out and 170 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-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2013-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 196 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2013-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 298 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
196 J/kg
Mixed-layer CIN
-139 J/kg
Mixed-layer LCL
520 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
298 m²/s²
0-3 km storm-relative helicity
281 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

424 
WUUS54 KHUN 181759
SVRHUN
ALC033-059-079-181830-
/O.NEW.KHUN.SV.W.0021.130318T1759Z-130318T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1259 PM CDT MON MAR 18 2013

THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN COLBERT COUNTY IN NORTHWEST ALABAMA...
  NORTHEASTERN FRANKLIN COUNTY IN NORTHWEST ALABAMA...
  NORTHWESTERN LAWRENCE COUNTY IN NORTHWEST ALABAMA...

* UNTIL 130 PM CDT

* AT 1259 PM CDT...DOPPLER RADAR INDICATED A CLUSTER OF SEVERE 
  THUNDERSTORMS OVER EASTERN FRANKLIN COUNTY. CAPABLE OF PRODUCING 
  QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THE 
  STRONGEST OF THESE STORMS WAS LOCATED NEAR RUSSELLVILLE...AND 
  MOVING EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RUSSELLVILLE...TOWN CREEK...LITTLEVILLE...LEIGHTON...NORTH 
  COURTLAND...COURTLAND AND HILLSBORO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR 
PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR 
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE 
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3454 8786 3479 8739 3473 8724 3461 8716
      3452 8721 3436 8789
TIME...MOT...LOC 1755Z 251DEG 37KT 3451 8768 

$$

KTW
1 follow-up statement
785 
WWUS54 KHUN 181811
SVSHUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
111 PM CDT MON MAR 18 2013

ALC033-059-079-181830-
/O.CON.KHUN.SV.W.0021.000000T0000Z-130318T1830Z/
COLBERT AL-FRANKLIN AL-LAWRENCE AL-
111 PM CDT MON MAR 18 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT 
FOR EXTREME SOUTHEASTERN COLBERT...EASTERN FRANKLIN AND NORTHWESTERN 
LAWRENCE COUNTIES...

AT 111 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 
CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 9 
MILES SOUTHWEST OF TOWN CREEK...MOVING EAST AT 45 MPH.

IN ADDITION...AT 111 PM DIME SIZE HAIL WAS REPORTED BETWEEN HATTON 
AND TOWN CREEK.

LOCATIONS IMPACTED INCLUDE...
NORTH COURTLAND...COURTLAND AND HILLSBORO. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MILES 
PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. 
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF 
YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT 
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3455 8765 3469 8735 3474 8727 3461 8716
      3452 8721 3440 8776
TIME...MOT...LOC 1805Z 251DEG 37KT 3456 8751 

$$

KTW

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 7:55 AM CDTSpecial Weather StatementHUNJackson35 min
Mar 18, 8:20 AM CDTSpecial Weather StatementHUNLimestone40 min
Mar 18, 8:52 AM CDTSpecial Weather StatementHUNMadison23 min
Mar 18, 9:19 AM CDTSpecial Weather StatementHUNLauderdale26 min
Mar 18, 10:20 AM CDTSpecial Weather StatementHUNColbert40 min
Mar 18, 10:39 AM CDTSpecial Weather StatementHUNColbert36 min
Mar 18, 10:51 AM CDTSevere Thunderstorm WarningHUNColbert, Franklin24 min
Mar 18, 11:24 AM CDTSpecial Weather StatementHUNLauderdale21 min
Mar 18, 11:40 AM CDTSpecial Weather StatementHUNLawrence35 min
Mar 18, 11:50 AM CDTSpecial Weather StatementHUNFranklin25 min
Mar 18, 12:14 PM CDTSevere Thunderstorm WarningHUNLawrence, Limestone31 min
Mar 18, 12:20 PM CDTSpecial Weather StatementHUNColbert, Franklin40 min
Mar 18, 12:34 PM CDTSevere Thunderstorm WarningHUNFranklin26 min
Mar 18, 12:44 PM CDTSevere Thunderstorm WarningHUNLimestone, Madison31 min
Mar 18, 1:21 PM CDTSpecial Weather StatementHUNMadison39 min
Mar 18, 1:27 PM CDTSevere Thunderstorm WarningHUNFranklin, Lawrence, Morgan33 min
Mar 18, 1:32 PM CDTSevere Thunderstorm WarningHUNColbert, Franklin, Lauderdale43 min
Mar 18, 1:33 PM CDTSevere Thunderstorm WarningHUNColbert, Lawrence27 min
Mar 18, 1:38 PM CDTSpecial Weather StatementHUNJackson37 min
Mar 18, 1:59 PM CDTSevere Thunderstorm WarningHUNColbert, Franklin, Lauderdale, Lawrence31 min
Mar 18, 2:00 PM CDTSevere Thunderstorm WarningHUNLawrence, Limestone, Morgan30 min
Mar 18, 2:11 PM CDTSevere Thunderstorm WarningHUNLimestone19 min
Mar 18, 2:14 PM CDTSpecial Weather StatementHUNJackson31 min
Mar 18, 2:15 PM CDTSevere Thunderstorm WarningHUNLimestone, Morgan30 min
Mar 18, 2:27 PM CDTSevere Thunderstorm WarningHUNLawrence, Limestone, Morgan48 min
Mar 18, 2:54 PM CDTSevere Thunderstorm WarningHUNCullman, Lawrence, Limestone, Madison, Morgan36 min
Mar 18, 3:08 PM CDTSpecial Weather StatementHUNJackson22 min
Mar 18, 3:12 PM CDTSevere Thunderstorm WarningHUNCullman, DeKalb, Jackson, Limestone, Madison, Marshall and 1 more48 min
Mar 18, 3:15 PM CDTSevere Thunderstorm WarningHUNJackson15 min
Mar 18, 3:27 PM CDTSevere Thunderstorm WarningHUNMadison33 min
Mar 18, 3:32 PM CDTSevere Thunderstorm WarningHUNJackson28 min
Mar 18, 3:41 PM CDTTornado WarningHUNDeKalb, Jackson19 min
Mar 18, 3:45 PM CDTTornado WarningHUNDeKalb15 min
Mar 18, 3:52 PM CDTSevere Thunderstorm WarningHUNDeKalb, Jackson, Marshall38 min
Mar 18, 3:59 PM CDTTornado WarningHUNDeKalb31 min
Mar 18, 3:59 PM CDTTornado WarningHUNDeKalb31 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2013Every severe thunderstorm warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.