Alert archive / Alabama / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 243, NWS Mobile, AL

October 25, 1997Clarke County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Oct 25, 1997, 4:30 PM CDT for Clarke County, Alabama. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 25, 1997, 4:30 PM CDT (21:30 UTC)
Expired: Oct 25, 1997, 5:30 PM CDT
In force: 60 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Clarke County, AL

The radar

The Mobile radar (KMOB), 118 km from the middle of the area, began a volume at 21:27 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
Oct 25, 3:45 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.5 hours before the alert went out and 194 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: 1546 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 507 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 191 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 4.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 252132 RRA
SVRMOB
ALC025-252230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
430 PM CDT SAT OCT 25 1997
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST ALABAMA
 
   ...CLARKE COUNTY
 
AT 428 PM CDT...NWS DOPPLER WEATHER RADAR INDICATED A SEVERE THUNDESTORM
THAT WILL BE ENTERING NORTHWEST CLARKE COUNTY,AL BY 445 PM CDT. THIS
STORM WAS MOVING NORTHEAST AT 30 MPH AND WILL AFFECT COFFEVILLE,AL AND
CAMPBELL,AL.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TOR6NADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 25, 9:19 AM CDT	Severe Thunderstorm Warning	MOB	Clarke	56 min
Oct 25, 11:42 AM CDT	Severe Thunderstorm Warning	MOB	Wilcox	63 min
Oct 25, 1:20 PM CDT	Tornado Warning	MOB	Butler	40 min
Oct 25, 1:29 PM CDT	Tornado Warning	MOB	Crenshaw	61 min
Oct 25, 3:27 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Crenshaw	63 min
Oct 25, 3:38 PM CDT	Tornado Warning	MOB	Choctaw	67 min
Oct 25, 5:19 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	56 min
Oct 25, 5:36 PM CDT	Tornado Warning	MOB	Mobile	69 min
Oct 25, 6:24 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	51 min
Oct 25, 6:27 PM CDT	Tornado Warning	MOB	Baldwin	63 min
Oct 25, 6:39 PM CDT	Tornado Warning	MOB	Mobile	36 min
Oct 25, 6:50 PM CDT	Severe Thunderstorm Warning	MOB	Butler	40 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1997 Every severe thunderstorm warning in 1997

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.