Alert archive / Alabama / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 55, NWS Mobile, AL

July 30, 1987Baldwin County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 30, 1987, 4:15 PM CDT for Baldwin County, Alabama. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jul 30, 1987, 4:15 PM CDT (21:15 UTC)
Expired
Jul 30, 1987, 5:00 PM CDT
In force
45 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, 9.3 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 1987-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3609 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 1987-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
3609 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
44 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 302116
SVRMOB
ALC003-302200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
415 PM CDT THU JUL 30 1987

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

IN SOUTHWEST ALABAMA
          ...BALDWIN

AT 414 PM CDT RADAR SHOWED A SEVERE THUNDERSTORM 7 MILES EAST OF
LOXLEY MOVING SOUTH AT 10 MPH.

DAMAGING WINDS AmND HAIL ARE POSSIBLE WITH THIS THUNDERSTORM.

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

Local storm report, Jul 30, 3:37 PM CDT, 38 minutes before
ATTN SELS
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
336 PM CDT THU JUL 30 1987

319 PM CDT...MOBILE POLICE DEPARTMENT REPORTED A TREE FELL INTO A
POWER LINE ON ROCHESTER ROAD NEAR THE MUNICIPAL. PARK IN MOBILE.
Special weather statement, Jul 30, 3:47 PM CDT, 28 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
345 PM CDT THU JUL 30 1987

SCATTERED VERY STRONG THUNDERSTORMS WERE OVER THE FLORIDA PANHANDLE...
SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI WITH THE HEAVIEST NEAR
MOBILE...BETWEEN MILTON AND CRESTVIEW...OVER THE APALACHICOLA RIVER
AREA AND OVER GEORGE AND HARRISON COUNTIES IN MISSISSIPPI.

THESE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN...FREQUENT LIGHTNING..
JSTRONG GUSTY WINDS...AND POSSIBLE HAIL. PERSONS IN THESE AREAS SHOULD
PREPARE TO TAKE SHELTER FROM THE POTENTIALLY DANGEROUS WEATHER.

THE THUNDERSTORMS WERE MOVING SLOWLY SOUTHEAST AT 7 MILES AN HOUR.
Local storm report, Jul 30, 4:07 PM CDT, 8 minutes before
ATTN SELS
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
403 PM CDT THU JUL 30 1987

320 PM CDT...THREE PINE TREES DOWNED BY HIGH WINDS AT BIT AND SPUR ROAD
AND WESTFIELD IN MOBILE.  ONE TREE FELL INTO A HOUSE...THE LARGEST TREE
WAS ONE AND A HALF FEET IN DIAMETER.  ALSO SEVERAL TREES WERE REPORTEDLY
KNOCKED DOWN BY HIGH WINDS AT THE UNIVERSITY OF SOUTH ALABAMA IN THE SAME
GENERAL VICINITY. SIGN DAMAGE ALSO REPORTED INCLUDING A 5 BY 9 FOOT
APcARTMENT SIGN BLOWN INTO THE ROAD SOUTH OF AIRPORT BLVD NEAR GRELOT
ROAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 30, 3:07 PM CDTSevere Thunderstorm WarningMOBMobile53 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.