Alert archive / Mississippi / Flash Flood Warnings in 1990

Flash Flood Warning 10, NWS Jackson, MS

February 15, 1990Smith County, Mississippi

NWS Jackson, MS issued this flash flood warning at Feb 15, 1990, 2:45 PM CST for Smith County, Mississippi. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Feb 15, 1990, 2:45 PM CST (20:45 UTC)
Expired
Feb 15, 1990, 5:45 PM CST
In force
3 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Smith 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 12:00Z, 8.8 hours before the alert went out and 64 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, Jackson, MS at 12:00Z on 1990-02-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1189 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, Jackson, MS at 12:00Z on 1990-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 157 square meters per square second.193958Sfc1 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
1189 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
728 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
157 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 152046
FFWJAN
MSC127-129-031-065-077-152345-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE JACKSON MS
245 PM CST THU FEB 15 1990
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  545 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN CENTRAL MISSISSIPPI
          ...SIMPSON...SMITH
IN SOUTH CENTRAL MISSISSIPPI
          ...COVINGTON...JEFFERSON.DAVIS...LAWRENCE
 
SEVERAL THUNDERSTORMS HAVE MOVED ACROSS SOUTH CENTRAL MISSISSIPPI
DURING THE PAST HOUR OR TWO. RAINFALL AMOUNTS OF OVER THREE INCHES
HAVE BEEN REPORTED IN THIS AREAS SINCE NOON TODAY. WITH THE ADDITIONAL
HEAVY RAIN EXPECTED AND THE ALREADY SWOLLEN CREEKS FLASH FLOODING OF
LOW LYING AREAS AND AREAS OF POOR DRAINAGE IS POSSIBLE FOR THE
REMAINDER OF THE AFTERNOON.
 
 
DO NOT DRIVE YOUR CAR INTO AREAS WHERE WATER COVERS THE ROAD.
THE WATER DEPTH MAY BE TOO DEEP TO ALLOW YOU TO CROSS SAFELY.
VEHICLES CAUGCHT IN RISING WATER MUST BE ABANDONED QUICKLY.
<
 
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT
TO CROSS BRIDGES OR LOW SPOTS IF WATER COVERS THE ROAD.  NEVER
TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.
<

What forecasters said that day

The local office's own words before this flash flood 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, Feb 15, 12:12 PM CST, 2 hours 33 minutes before
MSZALL-151900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1210 PM CST THU FEB 15 1990

...TORNADO WATCH REMAINS IN EFFECT UNTIL 5 PM FOR PORTIONS OF CENTRAL
AND SOUTH MISSISSIPPI...

AT 1205 PM CST RADAR SHOWED SCATTERED THUNDERSTORMS WITH HEAVY RAIN
OVER THE SOUTHERN TWO THIRDS OF MISSISSIPPI. THE STRONGER THUNDERSTORMS
WERE FROM LIBERTY MISSISSIPI TO NORTHEAST OF BROOKHAVEN...NEAR
CARTHAGE AND JUST NORTHWEST OF CRYSTAL SPRINGS. THE THUNDERSTORMS WERE
MOVING TO THE NORTHEAST AT 40 MPH.

A THUNDERSTORM OVER ST LANDRY PARRISH IN SOUTHEAST LOUISIANA MAY HAVE
PRODUCED A TORNADO. THIS THUNDERSTORM CONTAINING THE POSSIBLE TORNADO
WILL MOVE INTO WILKINSON COUNTY IN SOUTHW>EST MISSISSIPPI AROUND 1230 PM.
PERSONS IN WILKINSON COUNTY SHOULD REMAIN ALERT IN CASE A WARNING IS ISSUED.
Special weather statement, Feb 15, 12:42 PM CST, 2 hours 3 minutes before
MSZALL-151900-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
1225 PM CST THU FEB 15 1990

...TORNADO WATCH NUMBER 35 REMAINS IN EFFECT FOR PORTIONS OF CENTRAL
AND SOUTHERN MISSISSIPPI UNTIL 5:00PM THIS AFTERNOON AND EVENING...

...TORNADO WATCH NUMBER 36 REMAINS IN EFFECT FOR PORTIONS OF WESTERN
AND NORTHWESTERN MISSISSIPPI UNTIL 6:00PM THIS AFTERNOON AND EVENING...

AT 1225 PM CST RADAR INDICATED POTENTIALLY DANGEROUS THUNDERSTORMS
OVER THE SOUTH THIRD OF MISSISSIPPI...20 MILES SOUTH OF NEWTON..AND IN
A LARGE CLUSTER BETWEEN BROOKHAVEN AND MAGEE. ANOTHER VERY HEAVY
THUNDERSTORM WAS LOCATED IN SOUTHEAST LOUISIANA ABOUT 30 MILES SOUTH
OF WOODVILLE MISSISSIPPI.

THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS...
FREQUENT CLOUD TO GROUND LIGHTNING...SMALL HAIL...AND LOCALLY HEAVY
RAINFALL AS THEY MOVE TO THE NORTHEAST AT 35 MILES AN HOUR.
Local storm report, Feb 15, 1:42 PM CST, 1 hour 3 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MERIDIAN MS
142 PM CST THU FEB 15 1990

120 PM CST...NAVAL AIR STATION GATE GUARD REPORTS TORNADO TOUCH
             DOWN TWO MILES SOUTHWEST OF MAIN GATE.  LAUDERDALE
             COUNTY MISSISSIPPI.
Local storm report, Feb 15, 1:53 PM CST, 52 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MERIDIAN MS
152 PM CST THU FEB 15 1990

150 PM CST...NAVAL WEATHER OFFICE REPORTS TORNADO 8 MILES NORTH OF
             NAVAL AIR STATION.  LAUDERDALE COUNTY MISSISSIPPI.
Special weather statement, Feb 15, 2:16 PM CST, 29 minutes before
MSZALL-152200-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
215 PM CST THU FEB 15 1990

...TORNADO WATCH NUMBER 36 REMAINS IN EFFECT FOR PORTIONS OF WESTERN
AND NORTHWESTERN MISSISSIPPI UNTIL 6:00PM THIS AFTERNOON AND EVENING...

...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE REMAINDER OF THIS
AFTERNOON AND TONIGHT FOR ALL OF MISSISSIPPI EXCEPT THE SOUTHEAST...

AT 210 PM CST THUNDERSTORM WERE BEGINING TO DEVELOPE OVER SOUTHEAST
ARKANSAS. THESE STORM WILL BE MOVING TOWARD MISSISSIPPI DURING THE
NEXT HOUR. COUNTIES IN NORTHWEST MISSISSIPPPI...ESPECIALLY THE ONES
ALONG THE MISSISSIPPI RIVER...NEED TO BEGIN PREPARING FOR THE APPROACH
OF THESE STORMS.

THESE STORMS WILL HAVE THE POTENTIAL TO PRODUCE TORNADOES AND SEVERE
THUNDERSTORMS IN A SHORT PERIOD OF TIME.
Special weather statement, Feb 15, 2:33 PM CST, 12 minutes before
MSZALL-152200-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
230 PM CST THU FEB 15 1990

...TORNADO WATCH NUMBER 35 REMAINS IN EFFECT FOR PORTIONS OF CENTRAL
AND SOUTHERN MISSISSIPPI UNTIL 5:00PM THIS AFTERNOON AND EVENING...

...TORNADO WATCH NUMBER 36 REMAINS IN EFFECT FOR PORTIONS OF WESTERN
AND NORTHWESTERN MISSISSIPPI UNTIL 6:00PM THIS AFTERNOON AND EVENING...

...FLASH FLOOD WATCH FOR ALL EXCEPT SOUTHEAST MISSSISSIPPI FOR THIS
AFTERNOON AND TONIGHT..

AT 230 PM CST RADAR SHOWED THE STRONGER THUNDERSTORMS 10 MILES WEST OF
MT OLIVE...10 MILES EAST OF RALEIGH MISSISSIPPI...AND FROM BROOKHAVEN TO
MONTICELLO MISSISSIPPI.

ALL THESE THUNDERSTORMS COULD (POSSIBLE PRODUCE A TORNADO AS THEY MOVE TO
THE NORTHEAST AT 45 MPH.

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 15, 9:27 AM CSTSevere Thunderstorm WarningJANNeshoba33 min
Feb 15, 10:11 AM CSTSevere Thunderstorm WarningJANNewton34 min
Feb 15, 10:25 AM CSTSevere Thunderstorm WarningJANJasper35 min
Feb 15, 10:28 AM CSTSevere Thunderstorm WarningJANLauderdale47 min
Feb 15, 10:42 AM CSTSevere Thunderstorm WarningJANKemper33 min
Feb 15, 10:42 AM CSTSevere Thunderstorm WarningJANHinds, Warren48 min
Feb 15, 11:03 AM CSTSevere Thunderstorm WarningJANJasper27 min
Feb 15, 11:15 AM CSTSevere Thunderstorm WarningJANClarke, Lauderdale60 min
Feb 15, 12:21 PM CSTFlash Flood WarningJANLauderdale2 hr
Feb 15, 12:27 PM CSTSevere Thunderstorm WarningJANJasper33 min
Feb 15, 12:40 PM CSTSevere Thunderstorm WarningJANNewton35 min
Feb 15, 12:45 PM CSTSevere Thunderstorm WarningJANSimpson, Smith45 min
Feb 15, 12:52 PM CSTTornado WarningJANLauderdale38 min
Feb 15, 12:55 PM CSTTornado WarningJANAmite50 min
Feb 15, 12:59 PM CSTTornado WarningJANSimpson, Smith31 min
Feb 15, 1:11 PM CSTTornado WarningJANJefferson Davis34 min
Feb 15, 1:21 PM CSTTornado WarningJANScott24 min
Feb 15, 1:24 PM CSTTornado WarningJANJasper, Newton51 min
Feb 15, 1:28 PM CSTTornado WarningJANLauderdale32 min
Feb 15, 1:33 PM CSTTornado WarningJANCovington, Smith27 min
Feb 15, 1:42 PM CSTTornado WarningJANKemper48 min
Feb 15, 1:47 PM CSTTornado WarningJANPike18 min
Feb 15, 1:59 PM CSTTornado WarningJANSmith31 min
Feb 15, 2:01 PM CSTTornado WarningJANLauderdale44 min
Feb 15, 2:05 PM CSTTornado WarningJANLawrence, Lincoln25 min
Feb 15, 2:26 PM CSTTornado WarningJANJasper49 min
Feb 15, 2:37 PM CSTSevere Thunderstorm WarningJANSmith38 min
Feb 15, 2:37 PM CSTSevere Thunderstorm WarningJANCovington23 min
Feb 15, 2:45 PM CSTFlash Flood WarningJANCovington, Jefferson Davis, Lawrence, Simpson3 hr
Feb 15, 2:49 PM CSTFlash Flood WarningJANLauderdale6 hr
Feb 15, 2:51 PM CSTTornado WarningJANLauderdale54 min
Feb 15, 3:41 PM CSTTornado WarningJANJasper49 min
Feb 15, 3:59 PM CSTSevere Thunderstorm WarningJANLauderdale46 min
Feb 15, 4:16 PM CSTSevere Thunderstorm WarningJANAdams, Jefferson29 min
Feb 15, 4:29 PM CSTSevere Thunderstorm WarningJANBolivar31 min
Feb 15, 4:51 PM CSTSevere Thunderstorm WarningJANHinds39 min
Feb 15, 5:03 PM CSTFlash Flood WarningJANJasper6 hr
Feb 15, 5:48 PM CSTSevere Thunderstorm WarningJANWashington27 min

Nearby

Flash Flood Warnings in Mississippi, 1990Every flash flood warning in 1990

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.