Alert archive / Alabama / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 57, NWS Mobile, AL

August 2, 1987Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Aug 2, 1987, 4:10 PM CDT for Baldwin County, Alabama. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
Aug 2, 1987, 4:10 PM CDT (21:10 UTC)
Expired
Aug 2, 1987, 5:00 PM CDT
In force
50 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Baldwin County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Boothville, LA (KBVE), launched 12:00Z, 9.2 hours before the alert went out and 217 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, Boothville, LA at 12:00Z on 1987-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2328 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Boothville, LA at 12:00Z on 1987-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
2328 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
756 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
18 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 
TTAA00 KMOB 022113
SVRMOB
ALC003-022200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
410 PM CDT SUN AUG 2 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND A
SPECIAL MARINE WARNING UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...

IN SOUTHWEST ALABAMA
          ...SOUTHERN BALDWIN AND ADJACENT COASTAL WATERS INCLUDING
             MOBILE BAY.

AT 408 PM CDT RADAR SHOWED A CLUSjTER SEVERE THUNDERSTORMS IN SOUTHWEST
BALDWIN COUNTY MOVING SLOWLY TO THE SOUTH.

DAMAGING WINDS AND HAIL ARE POSSIBLE WITH THIS THUNDERSTORM.

GUSTY WINDS AND ROUGH SEAS CAN BE EXPECTED IN SOUTHERN MOBILE BAY.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 2, 2:44 PM CDT, 1 hour 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
245 PM CDT SUN AUG 2 1987

...STRONG THUNDERSTORMS MOVING INTO THE MOBILE AREA...

MOBILE RADAR AT 240 PM INDICATED STRONG THUNDERSTORMS DEVELOPING OVER
EXTREME SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA. THE STRONGEST STORMS
WERE LOCATED OVER DOWNTOWN MOBILE AND JUST NORTH OF THE MOBILE AIRPORT.
THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 5 MPH.

PERSONS IN THESE AREAS SHOULD eBE ON THE ALERT FOR STRONG GUSTY WINDS...
FREQUENT LIGHTNING...AND HEAVY RAINFALL.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 9:45 PM CDTSevere Thunderstorm WarningMOBCovington45 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1987Every severe thunderstorm warning in 1987

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.