Alert archive / Mississippi / Flash Flood Warnings in 1990

Flash Flood Warning 20, NWS Jackson, MS

April 27, 1990Hinds County, Mississippi

NWS Jackson, MS issued this flash flood warning at Apr 27, 1990, 3:37 PM CDT for Hinds County, Mississippi. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Apr 27, 1990, 3:37 PM CDT (20:37 UTC)
Expired
Apr 27, 1990, 5:45 PM CDT
In force
2 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Hinds 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, 8.6 hours before the alert went out and 35 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 1990-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1990-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
0 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
-5 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 KJAN 272047 COR
FFWJAN
MSC049-272245-

BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING...CORRECTION FOR SECOND LINE
NATIONAL WEATHER SERVICE JACKSON MS
337 PM CDT FRI APR 27 1990

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN CENTRAL MISSISSIPPI

   ...HINDS COUNTY

AT 340PM...MODERATE TO HEAVY RAINS PERSISTED ACROSS HINDS COUNTY WITH
SEVERAL REPORTS OF STREET AND LOW LAND FLOODING IN PROGRESS. RADAR
INDICATED THAT THESE RAINS SHOULD LAST ANOTHER TWO HOURS AND STANDING
WATER AREAS WILL ONLY INCREASE.  PLEASE BEWARE OF SEVERE HYDROPLANING
AND FLOODED STREETS FOR THE NEXT TWO HOURS ESPECIALLY IN THE JACKSON
METRO AREA.

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 CAUGHT IN RISING WATER MUST BE ABANDONED QUICKLY.
<

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, Apr 27, 12:21 PM CDT, 3 hours 16 minutes before
MSZALL-271800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1215 PM CDT FRI APR 27 1990

...TORNADO WATCH NO. 167 ISSUED FOR PORTIONS OF CENTRAL AND SOUTHERN
   MISSISSIPPI...

A VERY MOIST AND UNSTABLE AIR MASS IS IN PLACE OVER MISSISSIPPI AND HAS
PRODUCED ISOLATED THUNDERSTORMS OVER WEST AND SOUTH SECTIONS OF THE
STATE TODAY. AT NOON...THE STRONGEST STORMS WERE LOCATED ALONG A LINE
FROM RAYMOND TO BROOKHAVEN.

AN UPPER LEVEL WEATHER DISTURBANCE  IS APPROACHING THE STATE THIS
AFTERNOON AND WILL RESULT IN EVEN MORE UNSTABLE CONDITIONS IN THE AREA.
THUNDERSTORM ACTIVITY WILL INCREASE TODAY AND CONDITIONS ARE FAVORABLE
FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS OR TORNADOE7S THIS AFTERNOON
AND EVENING.

PEOPLE IN CENTRAL AND SOUTHERN MISSISSIPPI SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND
POSSIBLE WARNINGS.
Special weather statement, Apr 27, 12:47 PM CDT, 2 hours 50 minutes before
MSZALL-271900-

SPECIAL WEATHER STATEMENT AND RADAR STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1246 PM CDT FRI APR 27 1990

...TORNADO WATCH NO. 167 IS IN EFFECT TILL 7 PM FOR A LARGE PART OF
   CENTRAL AND SOUTHERN MISSISSIPPI...

AT 1240 PM...JACKSON RADAR INDICATED THUNDERSTORMS WERE RAPIDLY
INCREASING IN INTENSITY AND COVERAGE ACROSS CENTRAL AND SOUTH-CENTRAL
MISSISSIPPI.  THE STRONGEST STORMS WERE OVER NORTHERN COPIAH AND
SOUTHERN HINDS COUNTIES.  PEA-SIZED HAIL WAS REPORTED AT TERRY AT
1240 PM.

STRONG THUNDERSTORMS...SOME SEVERE...ARE EXPECTED TO CONTINUE TO DEVELOP
OVER CENTRAL AND SOUTHERN MISSISSIPPI THIS AFTERNOON.  LARGE HAIL...
DAMAGING WINDS...AND TORNADOES ARE ALL POSSIBLE WITH THESE DEVELOPING
THUNDERSTORMS.

PEOPLE SHOULD BE READY TO TAKE COVER IF THREATENING WEATHER APPROACHES
OR IF A WARNING IS ISSUED.

MOVEMENT WAS TO THE NORTH AT 30 MILES AN HOUR.
Special weather statement, Apr 27, 1:41 PM CDT, 1 hour 56 minutes before
MSZALL-271930-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
130 PM CDT FRI APR 27 1990

...TORNADO WATCH NO. 167 IS IN EFFECT UNTIL 7 PM FOR A LARGE PART OF
   CENTRAL AND SOUTHERN MISSISSIPPI...

AT 130 PM...JACKSON RADAR INDICATED STRONG THUNDERSTORMS OVER CENTRAL
AND SOUTH MISSISSIPPI. GENERAL MOVEMENT WAS TO THE NORTH AT 25 MPH AND
THE STRONGEST STORM WAS LOCATED JUST SOUTH OF YAZOO CITY.

THESE STORMS HAVE PRODUCED HAIL...LIGHTNING AND HEAVY RAIN AND STRONG
GUSTY WINDS ARE POSSIBLE.

A LARGE AREA OF RAIN WAS INDICATED OVER THE WEST MISSISSIPPI FROM
CLARKSDALE TO COLUMBIA AND SCATTERED SHOWERS AND THUNDERSTORMS WERE
LOCATED FROM MERIDIAN TO GRENADA.

STRONG THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER CENTRAL AND SOUTH
MISSISSIPPI TODAY AND SEVERE THUNDERSTORMS ARE POSSIBLE. CONDITIONS
WILL BE FAVORABLE FOR TORNADOES TODAY AND RESIDENTS SHOULD REMAIN ALERT
TO DANGEROUS WEATHER DEVELOPMENTS.
W
Special weather statement, Apr 27, 2:10 PM CDT, 1 hour 27 minutes before
MSZALL-272000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
210 PM CDT FRI APR 27 1990

...TORNADO WATCH NO. 167 IN EFFECT UNTIL 7 PM FOR A LARGE PART OF
   CENTRAL AND SOUTHERN MISSISSIPPI...

STRONG THUNDERSTORMS CONTINUE TO TRACK NORTH OVER CENTRAL AND SOUTH
MISSISSIPPI. THESE STORMS HAVE PRODUCED HAIL...HEAVY RAIN...STRONG
WIND AND DANGEROUS LIGHTNING. RAINFALL AMOUNTS OF 11/2 INCHES IN 30
MINUTES WERE REPORTED AT JACKSON.

THUNDERSTORM ACTIVITY WILL CONTINUE TO INCREASE IN STRENGTH AND
NUMBER THIS AFTERNOON. AFTERNOON HEATING COMBINED WITH THE PASSAGE OF
AN UPPER LEVEL WEATHER SYSTEM WILL RESULT IN THE DEVELOPMENT OF STRONG
THUNDERSTORMS TODAY AND SEVERE THUNDERSTORM|S ARE LIKELY. TORNADO
DEVELOPMENT IS ALSO POSSIBLE THROUGH THE EVENING.
Special weather statement, Apr 27, 2:13 PM CDT, 1 hour 24 minutes before
MSZ009-012-ALZ008-013-272100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
 215  PM CDT FRI APR 27 1990

 TORNADO WATCH NUMBER 167 CONTINUES IN EFFECT UNTIL 700 PM CDT FOR THE
FOLLOWING COUNTIES IN EAST CENTRAL MISSISSIPPI...CLARKE...JASPER...NEWTON
...LAUDERDALE...JONES...WAYNE THE FLOLLOWING COUNTIES IN EXTREME WEST
CENTRAL ALABAMA...SUMTET...CHOCTAW.

AT 210 PM CDT RADAR INDICATED A LARGE AREA OF STRONG THUNDERSTORM OVER
EAST CENTRAL MISSISSIPPI. THE STRONGEST THUNDERSTORMS WERE WEST OF A LINE
FROM NEAR GREENWOOD TO NEAR HATTIESBURG. THEY WERE MOVING NORTH AT 25 MPH.

EVERYONE IN AND CLOSE TO THE WATCH AREA SHOULD REMAIN WEATHER ALERT THROUGH
THE AFTERNOON AS THIS IS A DANGEROUS SITUATION. <<
Special weather statement, Apr 27, 2:48 PM CDT, 49 minutes before
MSZALL-272030-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
240 PM CDT FRI APR 27 1990

...TORNADO WATCH NO. 167 IN EFFECT UNTIL 7 PM FOR A LARGE PART OF
   CENTRAL AND SOUTHERN MISSISSIPPI...

STRONG THUNDERSTORMS WERE INDICATED OVER CENTRAL AND SOUTH MISSISSIPPI
WITH THE STRONGEST STORMS FROM GREENWOOD TO MCCOMB TO MAGEE. A FEW
THUNDERSTORMS HAVE BEEN SEVERE WITH A REPORT OF A TORNADO TOUCHDOWN
ALONG HIGHWAY 28 NEAR MAGEE. THESE STORMS HAVE PRODUCED DAMAGING
WINDS WITH DOWNED TREES AND DAMAGE TO HOUSES. MOVEMENT WAS TO THE NORTH
AT ABOUT 25 MPH.

STRONG THUNDERSTORMS WILL CONTINUE TO REDEVELOP OVER CENTRAL AND SOUTH
MISSISSIPPI TODAY AND MOVE TO THE NORTH. FORMATION OF SEVERE THUNDERSTORMS
IS LIKELY THROUGH THE AFTERNOON.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 2:09 PM CDTTornado WarningJANSimpson11 min
Apr 27, 2:09 PM CDTTornado WarningJANSmith36 min
Apr 27, 2:17 PM CDTTornado WarningJANRankin28 min
Apr 27, 2:38 PM CDTSevere Thunderstorm WarningJANMadison, Yazoo37 min
Apr 27, 2:46 PM CDTTornado WarningJANRankin, Scott29 min
Apr 27, 3:03 PM CDTSevere Thunderstorm WarningJANHolmes42 min
Apr 27, 3:18 PM CDTTornado WarningJANLeake, Madison42 min
Apr 27, 3:18 PM CDTTornado WarningJANScott32 min
Apr 27, 4:02 PM CDTTornado WarningJANAttala43 min
Apr 27, 4:09 PM CDTTornado WarningJANSimpson36 min
Apr 27, 4:46 PM CDTTornado WarningJANCarroll29 min
Apr 27, 4:53 PM CDTSevere Thunderstorm WarningJANNewton37 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.