Alert archive / Louisiana / Tornado Watches in 2002
Tornado Watch 9
The Storm Prediction Center issued this tornado watch at Feb 19, 2002, 6:45 PM CST for 17 parishes in Louisiana; 10 counties in Mississippi. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 19, 2002, 6:45 PM CST (00:45 UTC)
- Expired
- Feb 20, 2002, 12:00 AM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Grant Parish, LA, LaSalle Parish, LA, Madison Parish, LA, Rapides Parish, LA, Richland Parish, LA, Saint Landry Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Adams County, MS, Claiborne County, MS, Hinds County, MS, Issaquena County, MS, Jefferson County, MS, Madison County, MS, Sharkey County, MS, Warren County, MS, Wilkinson County, MS, Yazoo County, MS
Warnings issued inside it
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 8:47 PM CST | Severe Thunderstorm Warning | JAN | Issaquena, Warren | 28 min |
| Feb 19, 9:08 PM CST | Severe Thunderstorm Warning | JAN | Humphreys, Sharkey | 22 min |
| Feb 19, 9:12 PM CST | Severe Thunderstorm Warning | JAN | Hinds, Madison, Yazoo | 33 min |
| Feb 19, 9:44 PM CST | Severe Thunderstorm Warning | JAN | Madison, Yazoo | 31 min |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.8 hours before the alert went out and 186 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
- 756 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 638 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 302 m²/s²
- 0-3 km storm-relative helicity
- 345 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 7.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 200037 SEL9 SPC WW 200030 LAZ000-MSZ000-200600- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 9 STORM PREDICTION CENTER NORMAN OK 630 PM CST TUE FEB 19 2002 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF LOUISIANA WESTERN MISSISSIPPI EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 645 PM UNTIL MIDNIGHT CST. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 55 STATUTE MILES EAST AND WEST OF A LINE FROM 70 MILES SOUTH SOUTHWEST OF ALEXANDRIA LOUISIANA TO 105 MILES NORTH NORTHEAST OF NATCHEZ MISSISSIPPI. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. DISCUSSION...STRONG...FAVORABLE SHEAR PROFILES FOR SUPERCELLS TO DEVELOP WITHIN LINE OF STRONG THUNDERSTORMS NOW MOVING NEWD ACROSS LA. WITH APPROACH OF VIGOROUS UPPER TROUGH AND CONTINUED DESTABILIZATION OF AIR MASS NEWD INTO MS...CONDITIONS EXPECTED TO BE FAVORABLE FOR SUPERCELLS AND ISOLATED TORNADOES WITH THE LINE FOR NEXT SEVERAL HOURS. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 23040. ...HALES 302,0934 330,0913 330,0893 302,0914
Nearby
Tornado Watches in Louisiana, 2002Tornado Watches in Mississippi, 2002Every tornado watch in 2002
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.