Alert archive / Texas / Tornado Watches in 2001
Tornado Watch 130
The Storm Prediction Center issued this tornado watch at Apr 11, 2001, 6:15 AM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 11, 2001, 6:15 AM CDT (11:15 UTC)
- Expired
- Apr 11, 2001, 12:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 53 counties
Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Howard County, AR, Johnson County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Washington County, AR, Barry County, MO, McDonald County, MO, Newton County, MO, Stone County, MO, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McCurtain County, OK, Muskogee County, OK, Ottawa County, OK, Pushmataha County, OK, Sequoyah County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Delta County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Hunt County, TX, Lamar County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX
Warnings issued inside it
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 6:40 AM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 65 min |
| Apr 11, 6:53 AM CDT | Severe Thunderstorm Warning | TSA | Haskell, Muskogee, Sequoyah | 52 min |
| Apr 11, 6:53 AM CDT | Severe Thunderstorm Warning | TSA | Latimer | 52 min |
| Apr 11, 7:20 AM CDT | Severe Thunderstorm Warning | TSA | Mayes, Wagoner | 40 min |
| Apr 11, 7:26 AM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 64 min |
| Apr 11, 7:28 AM CDT | Tornado Warning | TSA | Haskell, Sequoyah | 47 min |
| Apr 11, 7:33 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 27 min |
| Apr 11, 7:36 AM CDT | Severe Thunderstorm Warning | SHV | Red River | 54 min |
| Apr 11, 7:44 AM CDT | Severe Thunderstorm Warning | TSA | Crawford, Sebastian | 46 min |
| Apr 11, 7:53 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Delaware | 52 min |
| Apr 11, 7:53 AM CDT | Severe Thunderstorm Warning | TSA | Craig, Mayes, Ottawa | 52 min |
| Apr 11, 8:03 AM CDT | Severe Thunderstorm Warning | TSA | Benton, Washington | 57 min |
| Apr 11, 8:27 AM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Sebastian | 63 min |
| Apr 11, 8:27 AM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 63 min |
| Apr 11, 8:47 AM CDT | Severe Thunderstorm Warning | TSA | Benton, Carroll, Madison, Washington | 58 min |
| Apr 11, 9:31 AM CDT | Severe Thunderstorm Warning | SGF | Barry, Lawrence, Newton | 44 min |
| Apr 11, 9:34 AM CDT | Severe Thunderstorm Warning | TSA | Franklin | 41 min |
| Apr 11, 9:38 AM CDT | Severe Thunderstorm Warning | TSA | Carroll, Madison | 52 min |
| Apr 11, 10:16 AM CDT | Severe Thunderstorm Warning | SGF | Christian, Lawrence, Stone | 44 min |
| Apr 11, 10:22 AM CDT | Severe Thunderstorm Warning | LZK | Johnson, Newton | 38 min |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 11.3 hours before the alert went out and 215 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
- 208 J/kg
- Mixed-layer CIN
- -207 J/kg
- Mixed-layer LCL
- 1609 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS9 KMKC 111054 SEL0 SEL0 MKC WW 111048 ARZ000-MOZ000-OKZ000-TXZ000-111700- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 130 STORM PREDICTION CENTER NORMAN OK 548 AM CDT WED APR 11 2001 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF WESTERN ARKANSAS EXTREME SOUTHWEST MISSOURI EASTERN OKLAHOMA NORTHEAST TEXAS EFFECTIVE THIS WEDNESDAY MORNING FROM 615 AM UNTIL NOON CDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTH SOUTHEAST OF TYLER TEXAS TO 15 MILES WEST NORTHWEST OF MONETT MISSOURI. 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. OTHER WATCH INFORMATION... CONTINUE...WW 126...WW 127...WW 128...WW 129... DISCUSSION...LINE OF STRONG/SEVERE STORMS FROM EAST CENTRAL OKLAHOMA INTO NORTH CENTRAL TEXAS IS EXPECTED TO CONTINUE MOVING NEWD THROUGH THE MORNING HOURS. ACTIVITY IS LOCATED IN ADVANCE OF VERY STRONG UPPER TROUGH LIFTING NEWD ACROSS THE CENTRAL/SRN PLAINS. VERY STRONG FLOW ALOFT WITH 100 KT AT 500 MB AND 60-70 KT WITHIN 2 KM OF THE SURFACE IS RESULTING IN VERY STRONG LOW LEVEL SHEAR/HELICITY SUPPORTIVE OF SUPERCELL DEVELOPMENT AND POSSIBLE TORNADOES. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 22055. ...WEISS ;365,0930 320,0941 320,0961 365,0951;
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 10:00 AM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Baxter, Boone, Clay, Cleburne, Conway and 36 more | 5 hr |
| Apr 10, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | Audrain, Franklin, Jefferson, Lincoln, Montgomery, Saint Charles and 4 more | 5 hr |
| Apr 11, 2:00 AM CDT | Tornado Watch | SPC | Atchison | 5 hr |
| Apr 11, 4:00 AM CDT | Severe Thunderstorm Watch | SPC | Andrew, Buchanan, Caldwell, Daviess, DeKalb, Gentry and 10 more | 5 hr |
| Apr 11, 9:30 AM CDT | Tornado Watch | SPC | Andrew, Barton, Bates, Benton, Buchanan, Caldwell and 47 more | 6 hr |
| Apr 11, 10:45 AM CDT | Tornado Watch | SPC | Atchison, Gentry, Grundy, Harrison, Holt, Nodaway and 1 more | 5 hr |
| Apr 11, 1:00 PM CDT | Tornado Watch | SPC | Adair, Audrain, Boone, Callaway, Clark, Cole and 20 more | 6 hr |
| Apr 10, 8:30 PM CDT | Severe Thunderstorm Watch | SPC | Beaver, Cimarron, Texas | 5 hr |
| Apr 10, 9:30 PM CDT | Tornado Watch | SPC | Caddo, Comanche, Cotton, Grady, Jefferson, Stephens and 1 more | 6 hr |
| Apr 11, 12:00 AM CDT | Tornado Watch | SPC | Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 17 more | 4 hr |
| Apr 11, 3:15 AM CDT | Tornado Watch | SPC | Atoka, Bryan, Canadian, Carter, Cleveland, Coal and 34 more | 5 hr |
| Apr 10, 7:00 PM CDT | Tornado Watch | SPC | Armstrong, Borden, Briscoe, Carson, Childress, Collingsworth and 32 more | 5 hr |
| Apr 10, 8:45 PM CDT | Tornado Watch | SPC | Coke, Crockett, Edwards, Irion, Nolan, Reagan and 6 more | 3 hr |
| Apr 11, 2:45 AM CDT | Tornado Watch | SPC | Bell, Bosque, Brown, Clay, Collin, Comanche and 30 more | 5 hr |
Nearby
Tornado Watches in Texas, 2001Tornado Watches in Arkansas, 2001Tornado Watches in Oklahoma, 2001Every tornado watch in 2001
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.