Alert archive / Mississippi / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 74, NWS Mobile, AL

June 8, 19894 counties in Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jun 8, 1989, 2:52 AM CDT for 4 counties in Mississippi. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Jun 8, 1989, 2:52 AM CDT (07:52 UTC)
Expired
Jun 8, 1989, 4:00 AM CDT
In force
68 min
Issued by
NWS Mobile, AL
Area
Whole counties

Counties Hancock County, MS, Harrison County, MS, Pearl River County, MS, Stone 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 7.9 hours before the alert went out and 53 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, Slidell Radar S, LA at 00:00Z on 1989-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1274 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, Slidell Radar S, LA at 00:00Z on 1989-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
1274 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
739 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
31 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 080753
SVRMOB
MSC045-047-109-131-080900-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
252 AM CDT THU JUN 8 1989
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTHEAST MISSISSIPPI
          ...HANCOCK...HARRISON...PEARL.RIVER...STONE
 
AT 250 AM NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS WAS MOVING RAPIDLY EASTWARD ACROSS PEARL RIVER AND
HANCOCK COUNTIES OF SOUTHEAST MISSISSIPPI. THESE STORMS HAVE BEEN
PRODUCING DAMAGING WINDS. MOVEMENT WAS TO THE EAST AT 45 MILES AN
HOUR.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

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, Jun 8, 2:43 AM CDT, 9 minutes before
SPECIAL WEATHER STATEMENT AND MARINE STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
240 AM CDT THU JUN 8 1989

...TORNADO WATCH IN EFFECT UNTIL 600 AM FOR SOUTHEAST MISSISSIPPI AND
   THE ADJACENT COASTAL WATERS...

AT 225 AM MOBILE RADAR INDICATED THE LEADING EDGE OF A LARGE AREA
THUNDERSTORMS WAS FROM NEAR JACKSON MISSISSIPPI TO ATMORE ALABAMA TO
NEAR PANAMA CITY FLORIDA. THE STORMS WERE MOVING TO THE EAST AND
NORTHEAST AT 20 TO 35 MILES AN HOUR.

A VERY STRONG THUNDERSTORM WAS NEAR PICAYUNE MISSISSIPPI. IT HAS
PRODUCED WINDS TO 60 MILES AN HOUR IN PARTS OF SOUTHEAST LOUISIANA
DURING THE PAST HOUR.

VERY STRONG THUNDERSTORMS WERE ALSO NEAR THE NORTHERN END OF THE
CHANDELEUR ISLANDS OF LOUISIANA.  THEY WERE ALSO MOVING NORTHEAST.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 11:13 PM CDTSevere Thunderstorm WarningMOBLamar32 min
Jun 7, 11:48 PM CDTSevere Thunderstorm WarningMOBForrest27 min
Jun 8, 12:21 PM CDTTornado WarningMOBHancock39 min
Jun 8, 1:18 PM CDTSevere Thunderstorm WarningMOBJackson42 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1989Every severe thunderstorm warning in 1989

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.