Alert archive / Mississippi / Tornado Warnings in 1987
Tornado Warning 15, NWS Jackson, MS
NWS Jackson, MS issued this tornado warning at Aug 11, 1987, 5:47 AM CDT for Warren County, Mississippi. It was in force for 28 min.
The area
The counties it named.
The facts
- Issued
- Aug 11, 1987, 5:47 AM CDT (10:47 UTC)
- Expired
- Aug 11, 1987, 6:15 AM CDT
- In force
- 28 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Warren 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
Jackson, MS (KJAN), launched 00:00Z, 10.8 hours before the alert went out and 73 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.
- Mixed-layer CAPE
- 1612 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 731 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KJAN 111052 COR
TORJAN
MSC149-111115-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
547 AM CDT TUE AUG 11 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 615 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN WEST CENTRAL MISSISSIPPI
...WARREN
AT 545 AM...RADAR INDICATED A POSSIBLE TORNADO IN EXTREME SOUTHERN
WARREN COUNTY 15 MILES SOUTH OF VICKSBURG. THE STORM IS MOVING NORTH
TOWARD THE VICKSBURG AREA AT 20 MILES AN HOUR.
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSENT ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.What forecasters said that day
The local office's own words before this tornado 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, Aug 11, 4:41 AM CDT, 1 hour 6 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 445 AM CDT TUE AUG 11 1987 ...ISOLATED HEAVY RAINFALL AMOUNTS POSSIBLE OVER MISSISSIPPI... THE TROPICAL DEPRESSION THAT MOVED ONTO THE TEXAS/LOUISIANA COAST MONDAY MORNING HAS WEAKENED AND MOVED NORTHEAST. THE REMNANTS OF THIS DEPRESSION WERE LOCATED OVER LOUISIANA BETWEEN ALEXANDRIA AND MONROE THIS MORNING. NUMEROUS SHOWERS AND THUNDERSTORMS DEVELOPED WITH THIS SYSTEM DURING THE NIGHT IN LOUISIANA AND PARTS OF WESTERN MISSISSIPPI. THE SYSTEM WILL DRIFT SLOWLY EASTWARD TODAY AND RESULT IN NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE MAGNOLIA STATE. IN SOME LOCATIONS...HEAVY RAINFALL IS POSSIBLE. HOWEVER...THE HEAVY AMOUNTS OF RAIN ARE NOT EXPECTED TO BE WIDESPREAD. RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE EXPECTED TODAY ACROSS THE SOUTH HALF WITH AROUND AN INCH OR LESS FORECAST IN THE NORTH. IN ISOLATED LOCATIONS...AMOUNTS UP TO 3 INCHES ARE POSSIBLE. MOST RIVERS AND STREAMS IN MISSISSIPPI ARE AT VERY LOW LEVELS...SO THESE AMOUNTS WILL NOT CAUSE ANY SERIOUS PROBLEMS. THIS SYSTEM IS EXPECTED TO MOVE EAST OF MISSISSIPPI ON WEDESDAY WHICH WILL RESULT IN LESS THUNDERSTORM ACTIVITY. A MORE NORMAL% SUMMERTIME PATTERN WILL RETURN TO MISSISSIPPI BY THURSDAY.
Nearby
Tornado Warnings in Mississippi, 1987Every tornado warning in 1987Tornadoes 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.