Alert archive / Mississippi / Flash Flood Warnings in 1991

Flash Flood Warning 80, NWS Jackson, MS

October 26, 1991Adams County, Mississippi

NWS Jackson, MS issued this flash flood warning at Oct 26, 1991, 7:23 PM CDT for Adams County, Mississippi. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Oct 26, 1991, 7:23 PM CDT (00:23 UTC)
Expired
Oct 26, 1991, 9:30 PM CDT
In force
2 hr
Issued by
NWS Jackson, MS
Area
Whole counties

County Adams County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.4 hours before the alert went out and 152 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 00:00Z on 1991-10-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1243 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 00:00Z on 1991-10-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
1243 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
744 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Oct 26, 4:38 PM CDT, 2 hours 45 minutes before
MSZALL-ARZ014>016-LAZ002-003-004-006-009-010-013-
ALZ004-008-013-016-262230-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
 430 PM CDT SAT OCT 26 1991

 ...THUNDERSTORMS INTENSIFYING OVER WEST CENTRAL MISSISSIPPI...

AT 430 PM CDT WEATHER SERVICE RADAR IN JACKSON INDICATED THAT
THUNDERSTORMS HAVE INTENSIFIED DURING THE PAST HOUR. THE STRONGEST
STORMS WERE LOCATED IN THE ROLLING FORK/HOLLY BLUFF AREA WHILE ANOTHER
CLUSTER OF STRONG THUNDERSTORMS WERE IN NORTHEAST LOUISIANA...
SOUTHWEST OF LAKE PROVIDENCE. THESE STORMS WERE MOVING NORTH AT
20 MILES AN HOUR.

THE SHARKEY COUNTY SHERIFF OFFICE REPORTED STRONG GUSTY WINDS WITH THE
STORMS ABOUT 12 MILES SOUTH OF ROLLING FORK JUST AFTER 4 PM CDT.

THESE STORMS ARE CAPABLE OF PRODUCING WIND GUSTS NEAR 45 MILES AN
HOUR...HEAVY DOWNPOURS AND FREQUENT LIGHTNING.

OTHER STORMS WER OCCURRING BETWEEN CLARKSDALE AND GREENWOOD AND JUST
SOUTH OF YAZOO CITY. A F6EW THUNDERSTORMS IN EAST CENTRAL LOUISIANA
WILL LIKELY AFFECT SOUTHWEST MISSISSIPPI...ESPECIALLY AROUND NATCHEZ
AND WOODVILLE...WITHIN THE NEXT HOUR.
Special weather statement, Oct 26, 5:49 PM CDT, 1 hour 34 minutes before
MSZALL-ARZ014>016-LAZ002-003-004-006-009-010-013-
ALZ004-008-013-016-262335-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
 535 PM CDT SAT OCT 26 1991

 ...THUNDERSTORMS WITH HEAVY RAIN CONTINUE OVER WESTERN MISSISSIPPI...

AT 535 PM CDT WEATHER SERVICE RADAR IN JACKSON CONTINUED TO SHOW
THUNDERSTORMS WITH HEAVY RAIN OVER WESTERN MISSISSIPPI. THE HEAVIEST
RAIN WAS OCCURRING OVER SUNFLOWER AND WASHINGTON COUNTIES...BETWEEN
VICKSBURG AND HOLLY BLUFF...AND JUST SOUTHWEST OF NATCHEZ. THE STORMS
CONTINUE TO MOVE NORTH AT 20 MILES AN HOUR.

THE WASHINGTON COUNTY SHERIFF OFFICE REPORTED SMALL HAIL ALONG WITH
TORRENTIAL DOWNPOURS SOUTH/SOUTHEAST OF GREENVILLE JUST BEFORE
530 PM CDT.

BESIDES THE HEAVY RAINFALL AND SOME HAIL...THE STORMS COULD ALSO PRODUCE
DANGEROUS LIGHTNING AND WIND GUSTS NEAR 35 MILES AN HOUR.

THE STORMS IN THE SOUTHERN PART OF THE DELTA HAVE SHOWN A TENDENCY TO
WEAKEN DURING THE PA<ST 30 MINUTES. MEANWHILE THE STORMS NEAR VICKSBURG
AND NATCHEZ HAVE GAINED STRENGTH.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 26, 7:27 PM CDTTornado WarningJANYazoo33 min
Oct 26, 8:06 PM CDTSevere Thunderstorm WarningJANYazoo39 min

Nearby

Flash Flood Warnings in Mississippi, 1991Every flash flood warning in 1991

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.