Alert archive / Oklahoma / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 326
The Storm Prediction Center issued this severe thunderstorm watch at May 30, 2001, 4:00 AM CDT for 26 counties in Oklahoma; Wichita County, Texas. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- May 30, 2001, 4:00 AM CDT (09:00 UTC)
- Expired
- May 30, 2001, 8:00 AM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Atoka County, OK, Bryan County, OK, Caddo County, OK, Carter County, OK, Choctaw County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Haskell County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Latimer County, OK, Love County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Stephens County, OK, Wichita County, TX
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 6:29 AM CDT | Severe Thunderstorm Warning | TSA | Haskell, McIntosh, Muskogee | 46 min |
| May 30, 6:36 AM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 24 min |
| May 30, 7:04 AM CDT | Severe Thunderstorm Warning | TSA | Latimer | 56 min |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 9.0 hours before the alert went out and 48 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
- 1017 J/kg
- Mixed-layer CIN
- -336 J/kg
- Mixed-layer LCL
- 966 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 424 m²/s²
- 0-3 km storm-relative helicity
- 670 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 7:30 PM CDT | Tornado Watch | SPC | Beaver, Beckham, Comanche, Cotton, Custer, Dewey and 12 more | 6 hr |
| May 29, 10:30 PM CDT | Tornado Watch | SPC | Alfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 30 more | 6 hr |
| May 30, 12:30 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Cherokee, Craig, Delaware, Mayes, Nowata and 5 more | 5 hr |
| May 30, 1:00 AM CDT | Tornado Watch | SPC | Beckham, Comanche, Cotton, Greer, Harmon, Jackson and 3 more | 3 hr |
| May 30, 7:30 AM CDT | Severe Thunderstorm Watch | SPC | LeFlore, McCurtain, Pushmataha, Sequoyah | 4 hr |
| May 30, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | Cimarron | 5 hr |
| May 30, 4:00 PM CDT | Tornado Watch | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Garvin and 12 more | 5 hr |
| May 30, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Andrews, Borden, Callahan, Coke, Coleman, Comanche and 26 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Oklahoma, 2001Severe Thunderstorm Watches in Texas, 2001Every severe thunderstorm 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.