Alert archive / Alabama / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 258, NWS Mobile, AL

November 1, 1997Butler County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Nov 1, 1997, 2:21 PM CST for Butler County, Alabama. It was in force for 54 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: Nov 1, 1997, 2:21 PM CST (20:21 UTC)
Expired: Nov 1, 1997, 3:15 PM CST
In force: 54 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Butler County, AL

The radar

The Ft Rucker radar (KEOX), 120 km from the middle of the area, began a volume at 20:21 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 1, 1:15 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 8.4 hours before the alert went out and 142 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: 1154 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 625 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 012023 RRA
SVRMOB
ALC013-012115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
221 PM CST SAT NOV 1 1997
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  315 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH ALABAMA
 
   ...BUTLER COUNTY
 
AT 220 PM CST...NWS DOPPLER WEATHER RADAR IN MOBILE,AL INDICATED TWO
DEVELOPING SEVERE THUNDERSTORMS IN BUTLER COUNTY ALABAMA. THE FIRST
STORM WAS 5 MILES NORTHEAST OF GEORGIANA. THE SECOND STORM WAS 10 MILES
EAST-NORTHEAST OF GREENEVILLE. BOTH OF THESE STORMS WERE MOVING
NORTHEAST AT 35 KNOTS.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  dREMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
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
Nov 1, 12:40 PM CST	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	2 hr
Nov 1, 1:16 PM CST	Severe Thunderstorm Warning	MOB	Covington	59 min
Nov 1, 2:10 PM CST	Tornado Warning	MOB	Choctaw	65 min
Nov 1, 2:42 PM CST	Severe Thunderstorm Warning	MOB	Clarke, Washington	2 hr
Nov 1, 2:42 PM CST	Severe Thunderstorm Warning	MOB	Wilcox	2 hr
Nov 1, 2:56 PM CST	Tornado Warning	MOB	Washington	64 min
Nov 1, 3:14 PM CST	Severe Thunderstorm Warning	MOB	Monroe	61 min
Nov 1, 3:33 PM CST	Severe Thunderstorm Warning	MOB	Crenshaw	27 min
Nov 1, 3:47 PM CST	Severe Thunderstorm Warning	MOB	Mobile	58 min
Nov 1, 3:47 PM CST	Severe Thunderstorm Warning	MOB	Conecuh	58 min
Nov 1, 3:57 PM CST	Severe Thunderstorm Warning	MOB	Escambia	63 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.