Alert archive / Alabama / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 66, NWS Birmingham, AL

March 13, 2003Shelby County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 13, 2003, 1:46 PM CST for Shelby 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 outline as issued.

The facts

Issued: Mar 13, 2003, 1:46 PM CST (19:46 UTC)
Expired: Mar 13, 2003, 2:15 PM CST
In force: 29 min
Issued by: NWS Birmingham, AL
Area: Counties, with a storm outline in the text

County Shelby County, AL

The radar

The Birmingham radar (KBMX), 16 km from the middle of the area, began a volume at 19:49 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
Mar 13, 10:10 AM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.8 hours before the alert went out and 17 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: 428 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 783 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KBMX 131946
SVRBHM
ALC117-132015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
146 PM CST THU MAR 13 2003

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SHELBY COUNTY IN ALABAMA

* UNTIL 215 PM CST

* AT 144 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER CALERA...MOVING EAST AT 25 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...COLUMBIANA
AND WILSONVILLE.

STRONG DAMAGING WIND...AND LARGE HAIL ARE LIKELY WITH THIS STORM.
TAKE COVER IN A STURDY SHELTER UNTIL THE STORM PASSES.

CALL 1-800-856-0758 TO REPORT SEVERE WEATHER.

LAT...LON 3319 8679 3323 8647 3319 8651 3314 8647
          3309 8652 3304 8652 3308 8663 3308 8677

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 13, 11:06 AM CST	Severe Thunderstorm Warning	BMX	Lamar, Pickens	54 min
Mar 13, 11:39 AM CST	Severe Thunderstorm Warning	BMX	Fayette	66 min
Mar 13, 11:49 AM CST	Severe Thunderstorm Warning	BMX	Tuscaloosa	56 min
Mar 13, 12:48 PM CST	Severe Thunderstorm Warning	BMX	Hale	42 min
Mar 13, 12:57 PM CST	Severe Thunderstorm Warning	BMX	Bibb, Perry, Tuscaloosa	63 min
Mar 13, 12:59 PM CST	Severe Thunderstorm Warning	BMX	Greene, Sumter	46 min
Mar 13, 1:17 PM CST	Severe Thunderstorm Warning	BMX	Marengo	43 min
Mar 13, 1:46 PM CST	Severe Thunderstorm Warning	BMX	Chilton	44 min
Mar 13, 1:55 PM CST	Severe Thunderstorm Warning	BMX	Lowndes	50 min
Mar 13, 2:05 PM CST	Severe Thunderstorm Warning	BMX	Coosa, Talladega	25 min
Mar 13, 2:23 PM CST	Severe Thunderstorm Warning	BMX	Clay	67 min
Mar 13, 2:54 PM CST	Severe Thunderstorm Warning	BMX	Elmore	51 min
Mar 13, 3:04 PM CST	Severe Thunderstorm Warning	BMX	Montgomery	41 min
Mar 13, 3:16 PM CST	Severe Thunderstorm Warning	BMX	Tallapoosa	44 min
Mar 13, 3:22 PM CST	Severe Thunderstorm Warning	BMX	Macon	38 min
Mar 13, 3:31 PM CST	Severe Thunderstorm Warning	BMX	Pike	44 min
Mar 13, 4:14 PM CST	Severe Thunderstorm Warning	BMX	Barbour, Pike	46 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2003 Every severe thunderstorm warning in 2003

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.