Alert archive / Mississippi / Tornado Warnings in 1991

Tornado Warning 6, NWS Jackson, MS

April 9, 1991Smith County, Mississippi

NWS Jackson, MS issued this tornado warning at Apr 9, 1991, 1:53 PM CDT for Smith County, Mississippi. It was in force for 37 min.

The area

The counties it named.

The facts

Issued: Apr 9, 1991, 1:53 PM CDT (18:53 UTC)
Expired: Apr 9, 1991, 2:30 PM CDT
In force: 37 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Smith County, MS

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 6.9 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2634 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 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, Apr 9, 8:49 AM CDT, 5 hours 4 minutes before

MSZ001>009-091500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
845 AM CDT TUE APR 9 1991

...STRONG TO POSSIBLY SEVERE THUNDERSTORMS HEADING FOR NORTHERN
    MISSISSIPPI...

A STRONG COLD FRONT COLLIDING INTO MOIST UNSTABLE AIR HAS TRIGGERED
STRONG TO SEVERE THUNDERSTORMS ACROSS ARKANSAS THIS MORNING. THERE HAVE
BEEN SEVERAL REPORTS OF HAIL WITH THESE STORMS. THE LEADING EDGE OF
STORMS SHOULD ARRIVE IN NORTHWEST MISSISSIPPI WITHIN THE NEXT 60 TO 90
MINUTES.

AT THIS TIME THE GREATEST THREAT FOR SEVERE WEATHER THIS MORNING WILL BE
BETWEEN THE GREENVILLE/GREENWOOD AREA NORTH TO MEMPHIS.

A WEATHER WATCH WILL BE ISSUED SHORTLY FOR PARTS OF NORTH MISSISSIPPI.
YOU ARE ADVISBED TO KEEP TUNE TO YOUR LOCAL TV...RADIO OR NOAA WEATHER
RADIO FOR THE LATEST WEATHER INFORMATION AND POSSIBLE WARNINGS.

Special weather statement, Apr 9, 10:39 AM CDT, 3 hours 14 minutes before

MSZALL-091645-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
1038 AM CDT TUE APR 9 1991

...SEVERE THUNDERSTORM WATCH NUMBER 105 REMAINS IN EFFECT FOR A LARGE
PART OF NORTHERN MISSISSIPPI UNTIL 300 PM CDT...

AT 1030 AM CDT THE JACKSON RADAR SHOWED A LARGE AREA OF MOSTLY LIGHT
RAIN OVER NORTHWEST MISSISSIPPI...SOUTHEAST ARKANSAS...AND SOUTHWEST
TENNESSEE.

A COUPLE OF THUNDERSTORMS WERE MIXED IN THE AREA OF LIGHT RAIN. ONE
VERY STRONG THUNDERSTORM WAS IN THE EXTREME NORTHWEST CORNER OF
MISSISSIPPPI...JUST SOUTHWEST OF HERNANDO. ANOTHER THUNDERSTORM WAS IN
SOUTHEAST ARKANSAS JUST WEST OF MONTICELLO.

PEOPLE IN NORTH MISSISSIPPI SHOULD REMAIN ALERT THIS MORNING AND EARLY
THIS AFTERNOON FOR THE POSSIBILITY OF DAMAGING THUNDERSTORMS. SOME OF
THE CITIES AFFECTED BY THE WATCH
INCLUDE...GREENWOOD...TUPLEO...OXFORD...GRENADA...WATER VALLEY...AND
HOLLY SPRINGS.

IN CENTRAL MISSISSIPPI THE BEST CHANCE FOR THUNDERSTORMS WILL BE LATER
ON THIS AFTERNOON.

Special weather statement, Apr 9, 11:49 AM CDT, 2 hours 4 minutes before

MSZALL-091745-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE JACKSON MS
1140 AM CDT TUE APR 9 1991

...SEVERE THUNDERSTORM WATCH NUMBER 105 REMAINS IN EFFECT FOR A LARGE
PART OF NORTHERN MISSISSIPPI UNTIL 300 PM CDT...

AT 1125 AM CDT WIDELY SCATTERED THUNDERSTORMS WERE DEVELOPING IN NORTH
AND CENTRAL MISSISSIPPI...WHILE AN AREA OF MOSTLY LIGHT RAIN CONTINUED
TO MOVE ACROSS NORTH MISSISSIPPI...SOUTHEAST ARKANSAS...AND WEST
TENNESSEE.

IN MISSISSIPPI...THE THUNDERSTORMS WITH THE HEAVIEST RAINFALL WERE LOCATED
10 MILES SOUTHEAST OF WINONA AND 10 MILES SOUTHEAST OF OXFORD.  OTHER
STRONG THUDERSTORMS CONTINUED IN SOUTHEAST ARKANSAS AND WEST TENNESSEE.

MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR.
PEOPLE IN NORTH MISSISSIPPI SHOULD REMAIN ALERT THIS AFTERNOON
FOR THE POSSIBILITY OF DAMAGING THUNDERSTORMS.  SOME OF THE CITIES
AFFECTED BY THE WATCH INCLUDE...GREENWOOD...TUPLEO...OXFORD...
GRENADA...WATER VALLEY...AN'D HOLLY SPRINGS.

IN CENTRAL MISSISSIPPI THE BEST CHANCE FOR THUNDERSTORMS WILL BE LATER
ON THIS AFTERNOON.

Special weather statement, Apr 9, 12:17 PM CDT, 1 hour 36 minutes before

MSZALL-091815-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1217 PM CDT TUE APR 9 1991

...SEVERE THUNDERSTORM WATCH NUMBER 105 HAS BEEN CANCELLED FOR A LARGE
PART OF NORTHERN MISSISSIPPI...

MUCH OF NORTHEAST MISSISSIPPI REMAINS UNDER THE WATCH UNTIL 300 PM
THIS TUESDAY AFTERNOON. THE FOLLOWING COUNTIES ARE STILL INCLUDED IN
THE WATCH...

ALCORN...CHICKASAW...CHOCTAW...CLAY...ITAWAMBA...LEE...MONROE...
OKTIBBEHA...PONTOTOCO...PRENTISS...TIPPAH...TISHOMINGO...UNION..
AND WEBSTER.

STRONG THUNDERSTORMS ARE OCCURRING OVER NORTHEAST MISSISSIPPI AND AS
THEY MOVE NORTHEAST THAT PORTION OF THE STATE WILL LIKELY BE CLEARED
FROM THE WATCH AREA.

jj+4`;SDFSPSJKLVE

Special weather statement, Apr 9, 12:46 PM CDT, 1 hour 7 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 1:36 PM CDT	Severe Thunderstorm Warning	JAN	Smith	24 min
Apr 9, 2:02 PM CDT	Tornado Warning	JAN	Jasper, Newton	43 min
Apr 9, 2:14 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	46 min
Apr 9, 2:30 PM CDT	Severe Thunderstorm Warning	JAN	Smith	60 min
Apr 9, 2:51 PM CDT	Severe Thunderstorm Warning	JAN	Marion, Walthall	24 min
Apr 9, 3:01 PM CDT	Severe Thunderstorm Warning	JAN	Jasper	44 min
Apr 9, 3:06 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	54 min
Apr 9, 3:14 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale	46 min
Apr 9, 3:59 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	46 min
Apr 9, 4:09 PM CDT	Severe Thunderstorm Warning	JAN	Lamar	51 min
Apr 9, 4:15 PM CDT	Severe Thunderstorm Warning	JAN	Montgomery	45 min
Apr 9, 4:28 PM CDT	Severe Thunderstorm Warning	JAN	Wayne	47 min
Apr 9, 4:31 PM CDT	Severe Thunderstorm Warning	JAN	Webster	59 min
Apr 9, 4:39 PM CDT	Severe Thunderstorm Warning	JAN	Winston	51 min
Apr 9, 4:40 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw	65 min
Apr 9, 4:57 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee	48 min
Apr 9, 5:29 PM CDT	Severe Thunderstorm Warning	JAN	Winston	46 min
Apr 9, 5:45 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba	45 min
Apr 9, 5:50 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee	40 min
Apr 9, 6:14 PM CDT	Severe Thunderstorm Warning	JAN	Lauderdale, Newton	46 min
Apr 9, 6:41 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba	49 min
Apr 9, 6:57 PM CDT	Severe Thunderstorm Warning	JAN	Scott	33 min
Apr 9, 2:31 PM CDT	Severe Thunderstorm Warning	JAN	Sumter	44 min
Apr 9, 3:31 PM CDT	Severe Thunderstorm Warning	JAN	Sumter	44 min
Apr 9, 3:47 PM CDT	Severe Thunderstorm Warning	JAN	Choctaw	43 min
Apr 9, 4:17 PM CDT	Severe Thunderstorm Warning	JAN	Sumter	43 min

Nearby

Tornado Warnings in Mississippi, 1991 Every tornado warning in 1991 Tornadoes 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.