Alert archive / Alabama / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 33, NWS Mobile, AL

July 4, 1987Conecuh County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 4, 1987, 6:44 PM CDT for Conecuh County, Alabama. It was in force for 46 min.

The area

The counties it named.

The facts

Issued
Jul 4, 1987, 6:44 PM CDT (23:44 UTC)
Expired
Jul 4, 1987, 7:30 PM CDT
In force
46 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Conecuh 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

Centreville/Bibb, AL (KCKL), launched 12:00Z, 11.7 hours before the alert went out and 165 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, Centreville/Bibb, AL at 12:00Z on 1987-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1448 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, Centreville/Bibb, AL at 12:00Z on 1987-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 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
1448 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
876 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Jul 4, 1:37 PM CDT, 5 hours 7 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
135 PM CDT SAT JUL 4 1987

AT 130 PM CDT...THUNDERSTORMS...SOME STRONG AND WITH HEAVY RAINS...
WERE SCATTERED OVER THE NORTHWEST FLORIDA PANHANDLE...SOUTH ALABAMA...
AND THE ADJOINING COASTAL WATERS.
THE MAIN CONCENTRATION WAS OVER THE WEST 50 MILES OF NORTHWEST FLORIDA
WITH SOME OF THE STRONGER THUNDERSTORMS NEAR MILTON...15 MILES WEST
OF PENSACOLA AND SCATTERED BETWEEN MILTON AND FORT WALTON.
THE THUNDERSTORMS WERE MOVING NORTHEAST AT 20 MILES AN HOUR.

THUNDERSTORMS WERE WIDELY SCATTERED OVER SOUTHEAST MISSISSIPPI...
SOUTHEAST LOUISIANA...AND OVER THE GULF BETWEEN THE LOUISIANA COAST
AND APALACHICOLA.

THE STRONGER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HEAVY RAIN...
GUSTY WINDS AROUND 45 MILES AN HOUR...FREQUENT LIGHTNING...POSSIBLE
SMALL HAIL...AND SOME BRIEF FLOODING OF POOR DRAINAGE AREAS.
PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR> THESE CONDITIONS AS
THE THUNDERSTORMS MOVE THROUGH THE AREA.

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.