Alert archive / Oklahoma / Tornado Watches in 2002
Tornado Watch 2
The Storm Prediction Center issued this tornado watch at Jan 23, 2002, 2:30 PM CST for 17 counties in Oklahoma; Fannin County, Grayson County, Lamar County, Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 23, 2002, 2:30 PM CST (20:30 UTC)
- Expired
- Jan 23, 2002, 7:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
Counties Atoka County, OK, Bryan County, OK, Choctaw County, OK, Coal County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Marshall County, OK, McCurtain County, OK, McIntosh County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Seminole County, OK, Sequoyah County, OK, Fannin County, TX, Grayson County, TX, Lamar County, TX
The radar
The Norman radar (KTLX), 145 km from the middle of the area, began a volume at 20:30 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.
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 |
|---|---|---|---|---|
| Jan 23, 3:19 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Pittsburg | 41 min |
| Jan 23, 3:32 PM CST | Severe Thunderstorm Warning | TSA | McIntosh | 43 min |
| Jan 23, 4:17 PM CST | Severe Thunderstorm Warning | TSA | Sequoyah | 43 min |
| Jan 23, 4:21 PM CST | Severe Thunderstorm Warning | OUN | Johnston, Marshall | 24 min |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 8.5 hours before the alert went out and 148 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2740 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 129 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 232011 SEL2 SPC WW 232006 OKZ000-TXZ000-240100- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 2 STORM PREDICTION CENTER NORMAN OK 206 PM CST WED JAN 23 2002 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHEAST OKLAHOMA EXTREME NORTH TEXAS EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 230 PM UNTIL 700 PM 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 70 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST NORTHWEST OF DURANT OKLAHOMA TO 15 MILES NORTHEAST OF PAGE OKLAHOMA. 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...SCATTERED STRONG/SEVERE STORMS CONTINUE TO INCREASE OVER PARTS OF SOUTHEAST OK...WITH SOME DEVELOPMENT NOW OCCURRING INTO NORTH TX. LOW LEVEL MOISTURE AND INSTABILITY IS QUITE STRONG...WITH DEWPOINTS IN THE MID 60S AND SBCAPE VALUES OVER 1500 J/KG. STEEP MID LEVEL LAPSE RATES AND SUPERCELL STORM STRUCTURES INDICATE THE THREAT OF ISOLATED TORNADOES AS WELL AS VERY LARGE HAIL. 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 24035. ...HART 350,0965 355,0942 334,0942 330,0965 WWUS20 KWNS 232011 SEL2 SPC WW 232006 OKZ000-TXZ000-240100- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 2 STORM PREDICTION CENTER NORMAN OK 206 PM CST WED JAN 23 2002 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHEAST OKLAHOMA EXTREME NORTH TEXAS EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 230 PM UNTIL 700 PM 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 70 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST NORTHWEST OF DURANT OKLAHOMA TO 15 MILES NORTHEAST OF PAGE OKLAHOMA. 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...SCATTERED STRONG/SEVERE STORMS CONTINUE TO INCREASE OVER PARTS OF SOUTHEAST OK...WITH SOME DEVELOPMENT NOW OCCURRING INTO NORTH TX. LOW LEVEL MOISTURE AND INSTABILITY IS QUITE STRONG...WITH DEWPOINTS IN THE MID 60S AND SBCAPE VALUES OVER 1500 J/KG. STEEP MID LEVEL LAPSE RATES AND SUPERCELL STORM STRUCTURES INDICATE THE THREAT OF ISOLATED TORNADOES AS WELL AS VERY LARGE HAIL. 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 24035. ...HART 350,0965 355,0942 334,0942 330,0965
Nearby
Tornado Watches in Oklahoma, 2002Tornado Watches in Texas, 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.