Alert archive / Mississippi / Tornado Watches in 2002
Tornado Watch 671
The Storm Prediction Center issued this tornado watch at Sep 6, 2002, 6:40 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 6, 2002, 6:40 PM CDT (23:40 UTC)
- Expired
- Sep 7, 2002, 12:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Baldwin County, AL, Butler County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Escambia County, AL, Mobile County, AL, Monroe County, AL, Washington County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL, Orleans Parish, LA, Saint Bernard Parish, LA, Saint Tammany Parish, LA, Forrest County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Lamar County, MS, Marion County, MS, Pearl River County, MS, Perry County, MS, Stone County, MS, Wayne County, MS
The radar
The Mobile radar (KMOB), 33 km from the middle of the area, began a volume at 23:44 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 11.7 hours before the alert went out and 129 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
- 537 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1188 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 062342 SEL1 SPC WW 062340 ALZ000-FLZ000-LAZ000-MSZ000-CWZ000-070500- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 671 STORM PREDICTION CENTER NORMAN OK 640 PM CDT FRI SEP 6 2002 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHERN ALABAMA FAR WESTERN FLORIDA PANHANDLE FAR SOUTHEAST LOUISIANA SOUTHERN MISSISSIPPI COASTAL WATERS EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 640 PM UNTIL MIDNIGHT CDT. TORNADOES...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES WEST OF GULFPORT MISSISSIPPI TO 15 MILES NORTHEAST OF CRESTVIEW FLORIDA. 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...VWP FROM MOB YIELDS AN INCREASINGLY FAVORABLE LOW LEVEL SHEAR PROFILE FOR TORNADOES...WITH 50 KT ELY FLOW AT 3 KM. GIVEN AN INCREASE IN DISCRETE THUNDERSTORM DEVELOPMENT ACROSS THIS REGION...BRIEF TORNADOES WILL BECOME MORE LIKELY THROUGH THE EVENING. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 350. MEAN STORM MOTION VECTOR 11030. ...EVANS 312,0895 320,0862 295,0862 291,0895
Nearby
Tornado Watches in Mississippi, 2002Tornado Watches in Alabama, 2002Tornado Watches in Florida, 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; radar from the NEXRAD Level II archive.