Alert archive / Alabama / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 271, NWS Mobile, AL

November 18, 2003Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Nov 18, 2003, 2:08 PM CST for Baldwin County, Alabama. It was in force for 37 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: Nov 18, 2003, 2:08 PM CST (20:08 UTC)
Expired: Nov 18, 2003, 2:45 PM CST
In force: 37 min
Issued by: NWS Mobile, AL
Area: Counties, with a storm outline in the text

County Baldwin County, AL

The radar

The Mobile radar (KMOB), 39 km from the middle of the area, began a volume at 20:09 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
Nov 18, 11:25 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.1 hours before the alert went out and 182 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: 309 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 352 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMOB 182008
SVRMOB
ALC003-182045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
207 PM CST TUE NOV 18 2003

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 245 PM CST

* AT 204 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN         
  EXCESS OF 60 MPH.  THIS STORM WAS LOCATED OVER MOBILE BAY ABOUT    
  1 MILE SOUTHWEST OF POINT CLEAR...MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MONTROSE BY 215 PM CST
  DAPHNE AND CLAY CITY BY 220 PM CST
  SILVERHILL BY 230 PM CST
  LOXLEY AND ROBERTSDALE BY 235 PM CST

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE FOR
DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING.
TAKE COVER IN A STURDY SHELTER UNTIL THE STORM HAS PASSED.

LAT...LON 3063 8801 3035 8793 3055 8753 3083 8773

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 18, 8:10 AM CST	Tornado Warning	MOB	Washington	35 min
Nov 18, 10:33 AM CST	Special Marine Warning	MOB		87 min
Nov 18, 11:07 AM CST	Severe Thunderstorm Warning	MOB	Choctaw	53 min
Nov 18, 12:18 PM CST	Severe Thunderstorm Warning	MOB	Mobile, Washington	57 min
Nov 18, 12:27 PM CST	Special Marine Warning	MOB		2 hr
Nov 18, 12:27 PM CST	Special Marine Warning	MOB		2 hr
Nov 18, 2:25 PM CST	Special Marine Warning	MOB		2 hr
Nov 18, 2:50 PM CST	Severe Thunderstorm Warning	MOB	Baldwin	40 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.