Alert archive / Alabama / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 25, NWS Mobile, AL

May 14, 1987Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 14, 1987, 12:22 PM CDT for Mobile County, Alabama. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
May 14, 1987, 12:22 PM CDT (17:22 UTC)
Expired
May 14, 1987, 1:25 PM CDT
In force
63 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Mobile 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

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 5.4 hours before the alert went out and 164 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, Eglin AFB/Valpar, FL at 12:00Z on 1987-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 178 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, Eglin AFB/Valpar, FL at 12:00Z on 1987-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 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
178 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
657 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
65 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 141723
SVRMOB
ALC097-141825-

BULLETIN..IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1222 PM CDT THU MAY 14 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 125 PM CDT FOR THE FOLLOWING COUNTY IN ALABAMA...

...MOBILE

AT 1222 PM CDT THE MOBILE RADAR SHOWED A SEVERE THUNDERSTORM 7 MILES
SOUTHWEST OF CITRONELLE MOVING TO THE EAST AT 15 MPH.

LARGE HAIL AND DAMAGING WINDS CAN BE EXPECTED WITH THIS THUNDERSTORM.
ADDITIONALLY OTHER INTENSE THUNDERSTORMS WERE SCATTERED ACROSS MOBILE
COUNTY....THESE COULD ALSO PRODUCE HAIL AND DAMAGING WINDS.

STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST WEATHER INFORMSATION.

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, May 14, 10:55 AM CDT, 1 hour 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1055 AM CDT THU MAY 14 1987

...THUNDERSTORMS DEVELOPING RAPIDLY OVER SOUTHEAST MISSISSIPPI AND
SOUTHWEST ALABAMA...

AT 1045 AM CDT NATIONAL WEATHER SERVICE RADARS SHOWED THUNDERSTORMS
INCREASING IN COVERAGE AND INTENSITY ACROSS SOUTHEAST MISSISSIPPI AND
MOBILE AND WASHINGTON COUNTIES IN ALABAMA.  SOME OF THE THUNDERSTORMS
ARE PRODUCING VERY HEAVY RAINFALL...FREQUENT LIGHTNING...GUSTY WINDS...
AND POSSIBLY HAIL.  THE HEAVIEST RAINS DETECTED BY RADAR WERE...NEAR
ALABAMA PORT...IN THE MOBILE AREA...NEAR PASCAGOULA...WEST OF LUCEDALE
MISSISSIPPI...AND SOUTHWEST OF CHATOM ALABAMA.

THUNDERSTORMS SHOULD CONTINUE TO INCREASE ACROSS SOUTHWEST ALABAMA AND
SOUTHEAST MISSISSIPPI DURING THE NEXT FEW HOURS. STAY TUNED TO NOAA WEATHER
RADIO FOR LATER STATEMENTS AND POSSIBLY WARNINGS.
Special weather statement, May 14, 11:42 AM CDT, 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1141 AM CDT THU MAY 14 1987

AT 1125 AM CDT THUNDERSTORMS WERE NUMEROUS OVER SOUTHEAST MISSISSIPPI
AND SCATTERED OVER SOUTHWEST ALABAMA.

THE HEAVIEST RAINFALL WAS BETWEEN HURLEY MISSISSIPPI AND GRAND BAY
ALABAMA...IN MOBILE BAY WEST OF POINT CLEAR...NEAR STATE LINE MS...
AND BETWEEN MERRILL AND PERKINSON MISSISSIPPI.

INDIVIDUAL THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 10( MILES AN
HOUR.

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.