Alert archive / Mississippi / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 66, NWS Mobile, AL

June 17, 1994Harrison County, Jackson County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jun 17, 1994, 2:07 PM CDT for Harrison County, Jackson County, Mississippi. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Jun 17, 1994, 2:07 PM CDT (19:07 UTC)
Expired
Jun 17, 1994, 3:15 PM CDT
In force
68 min
Issued by
NWS Mobile, AL
Area
Whole counties

Counties Harrison County, MS, Jackson County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.1 hours before the alert went out and 84 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 12:00Z on 1994-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2055 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 12:00Z on 1994-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
2055 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
830 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
40 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 171908
SVRMOB
MSC047-059-172015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
207 PM CDT FRI JUN 17 1994
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  315 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST MISSISSIPPI
 
   ...HARRISON COUNTY...JACKSON COUNTY
 
AT 105 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM ALONG THE HARRISON
AND JACKSON COUNTY LINE NORTH OF OCEAN SPRINGS AND BILOXI. THE STORM WAS
MOVING TO THE SOUTH AT 10 MPH.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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 17, 11:55 AM CDT, 2 hours 12 minutes before
FLZ001>010-012-171730-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
1140 APM CDT FRI JUN 17 1994

1130 AM CDT...RAIN COVERED MOST NORTHWEST FLORIDA FROM ESCAMBIA COUNTY
IN THE WEST TO THE APALACHICOLA RIVER TO THE EAST...AND SOUTH 100 MILES
INTO THE GULF.

SHOWERS AND THUNDERSTORMS INDICATING PERIODS OF HEAVY RAIN WERE
NUMEROUS...EAST TO WEST...THROUGH THE CENTRAL FLORIDA PANHANDLE.
SINCE THE GROUND IS ALREADY WET AND ALMOST SATURATED FROM EARLIER RAINS
...THESE SHOWERS AND THUNDERSTORMS WILL LIKELY CAUSE FLOODING OF LOW
AREAS ALONG WITH AREAS OF POOR DRAINAGE. MOTORISTS SHOULD AVOID FLOODED
STREETS AND NOT ATTEMPT TO CROSS THESE ROADWAYS.

THE SHOWERS AND THUNDERSTORMS WERE MOVING SLOWLY SOUTH TOWARD THE
COASTLINE.

Nearby

Severe Thunderstorm Warnings in Mississippi, 1994Every severe thunderstorm warning in 1994

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.