Alert archive / Mississippi / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 15, NWS Mobile, AL

March 27, 1987Hancock County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Mar 27, 1987, 9:46 AM CST for Hancock County, Mississippi. It was in force for 44 min.

The area

The counties it named.

The facts

Issued
Mar 27, 1987, 9:46 AM CST (15:46 UTC)
Expired
Mar 27, 1987, 10:30 AM CST
In force
44 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Hancock County, MS

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, 3.8 hours before the alert went out and 119 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 1987-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 126 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 1987-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 square meters per square second.1939587897117136Sfc1 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
126 J/kg
Mixed-layer CIN
-250 J/kg
Mixed-layer LCL
633 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
203 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 271546
SVRMOB
MSC045-271630-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MOBILE AL
946 AM CST FRI MAR 27 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND 
SPECIAL MARINE WARNING EFFECTIVE UNTIL 1030 AM CST FOR PEOPLE IN THE 
FOLLOWING COUNTY OF

SOUTHEAST MISSISSIPPI...HANCOCK
...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE
COUNTY JUST MENTIONED

MOBILE RADAR AT 1040 AM CST SHOWED A VERY STRONG THUNDERSTORM
10 MILES NORTHWEST OF BAY ST. LOUIS MISSISSIPPI. THE STORM WAS
TRACKING EAST NORTHEAST AT 35 MPH.

THIS STORM IS ACCOMPANIED BY INTENSE LIGHTNING AND STRONG GUSTY
 WINDS.

 THIS STORM ALSO PRODUCED GOLF BALL SIZE HAIL IN THE SLIDELL
 LOUISIANA AREA AS IT MOVED NORTHEAST.

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, Mar 27, 5:03 AM CST, 4 hours 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PENSACOLA FL
500 AM CST FRI MAR 27 1987

...TRAVELERS ADVISORY FOR THE FLORIDA PANHANDLE...

FOG WAS WIDESPREAD OVER THE FLORIDA PANHANDLE...AND PATCHES OF DENSE
FOG REDUCING VISIBILITY TO LESS THAN ONE-HALF MILE MAY BE EXPECTED AT
SCATTERED LOCATIONS IN THE FLORIDA PANHANDLE.
TRAVELERS SHOULD EXERCISE ALL NECESSARY PRECAUTIONS FOR THESE HAZARDOUS
DRIVING CONDITIONS. ALLOW EXTRA TRAVEL TIME TO REACH DESTINATIONS...
SLOW DOWN AND USE LOW-BEAM HEADLIGHTS...AND BE ALERT FOR POSSIBLE
SUDDEN ENCOUNTERS WITH AREAS OF DENSE FOG.
CONDITIONS ARE EXPECTED TO IMPROVE AROUND MID-MORNING.
Special weather statement, Mar 27, 9:05 AM CST, 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
905 AM CST FRI MAR 27 1987

...VERY HEAVY THUNDERSTORMS MOVING INTO THE WESTERN COUNTIES OF
   SOUTHEAST MISSISSIPPI AND THE COASTAL WATERS OF ALABAMA...

MOBILE RADAR AT 900 AM CST SHOWED VERY HEAVY THUNDERSTORMS MOVING INTO
SOUTHEAST MISSISSIPPI COUNTIES OF PEARL RIVER AND LAMAR FROM LOUISIANA.
OTHER SHOWERS AND VERY HEAVY THUNDERSTORMS WERE OVER THE COASTAL WATERS
OF ALABAMA...NORTHWEST FLORIDA AND SOUTHWEST ALABAMA. THE STORMS WERE
MOVING NORTHEAST AT 30 MPH.

PERSONS IN OR NEAR THE HEAVY STORMS MAY EXPERIENCE BRIEF FLOODING OF
ROADWAYS DUE TO THE HEAVY RAINFALL...ELECTRICAL STORMS DUE TO THE
LIGHTNING STRIKES AND STRONG GUSTY WINDS.
<
LISTEN TO NOAA WEATHER RADIO, COMMERICAL RADIO OR TV FOR LATER
STATEMENTS ON THIS WEATHER PROBLEM AS IT MOVES ACROSS SOUTHEAST
MISSISSIPPI AND SOUTHWEST ALABAMA FOR THE NEXT COUPLE HOURS.

Nearby

Severe Thunderstorm Warnings in Mississippi, 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.