Alert archive / Alabama / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 228, NWS Mobile, AL

July 21, 2003Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 21, 2003, 1:13 PM CDT for Mobile County, Alabama. It was in force for 32 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
Jul 21, 2003, 1:13 PM CDT (18:13 UTC)
Expired
Jul 21, 2003, 1:45 PM CDT
In force
32 min
Issued by
NWS Mobile, AL
Area
Counties, with a storm outline in the text

County Mobile County, AL

The radar

The Mobile radar (KMOB), 18 km from the middle of the area, began a volume at 18:15 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.2 hours before the alert went out and 146 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, Slidell Radar S, LA at 12:00Z on 2003-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1833 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, Slidell Radar S, LA at 12:00Z on 2003-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939Sfc1 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
1833 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
787 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
14 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.

916 
WUUS54 KMOB 211813
SVRMOB
ALC097-211845-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
112 PM CDT MON JUL 21 2003

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MOBILE COUNTY IN SOUTHWEST ALABAMA

* UNTIL 145 PM CDT

* AT 112 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  CLUSTER OF SEVERE THUNDERSTORMS FROM NEAR MOBILE GREYHOUND PARK TO 
  5 MILES WEST OF BAYOU LA BATRE...AND MOVING EAST AT 15 TO 20 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  TILLMANS CORNER BY 115 PM CDT...
  CODEN...AND BAYOU LA BATRE BY 120 PM CDT...
  LAURENDINE BY 125 PM CDT...
  AND BROOKLEY FIELD AIRPORT BY 130 PM CDT

STRONG DAMAGING WIND...LARGE HAIL...AND HEAVY RAIN ARE LIKELY WITH
THESE STORMS.  IF IN THE PATH OF THESE STORMS...TAKE COVER IN A
STURDY SHELTER UNTIL THE STORMS HAVE PASSED.

CALL 1-800-284-9054 TO REPORT SEVERE WEATHER.

LAT...LON 3066 8826 3035 8841 3030 8814 3064 8801

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 7:54 AM CDTSpecial Marine WarningMOB2 hr
Jul 21, 11:44 AM CDTSpecial Marine WarningMOB31 min
Jul 21, 12:18 PM CDTSpecial Marine WarningMOB57 min
Jul 21, 12:18 PM CDTSpecial Marine WarningMOB57 min
Jul 21, 1:21 PM CDTSpecial Marine WarningMOB54 min
Jul 21, 1:21 PM CDTSpecial Marine WarningMOB54 min
Jul 21, 1:34 PM CDTSevere Thunderstorm WarningMOBMonroe26 min
Jul 21, 1:57 PM CDTSevere Thunderstorm WarningMOBMobile33 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2003Every 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.