Alert archive / Oklahoma / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 334
The Storm Prediction Center issued this severe thunderstorm watch at May 30, 2001, 9:00 PM CDT for 20 counties in Oklahoma; Clay County, Cooke County, Montague County, Texas. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- May 30, 2001, 9:00 PM CDT (02:00 UTC)
- Expired
- May 31, 2001, 1:00 AM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 23 counties
Atoka County, OK, Bryan County, OK, Carter County, OK, Coal County, OK, Cotton County, OK, Garvin County, OK, Haskell County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Sequoyah County, OK, Stephens County, OK, Clay County, TX, Cooke County, TX, Montague County, TX
The radar
The Norman radar (KTLX), 105 km from the middle of the area, began a volume at 02:04 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
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 9:00 PM CDT | Severe Thunderstorm Warning | OUN | Murray | 30 min |
| May 30, 9:11 PM CDT | Flash Flood Warning | TSA | Pittsburg | 3 hr |
| May 30, 9:15 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 45 min |
| May 30, 9:19 PM CDT | Severe Thunderstorm Warning | OUN | Atoka | 41 min |
| May 30, 9:26 PM CDT | Severe Thunderstorm Warning | TSA | Haskell | 49 min |
| May 30, 9:28 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pittsburg | 47 min |
| May 30, 9:50 PM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 40 min |
| May 30, 9:59 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 46 min |
| May 30, 10:15 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 45 min |
| May 30, 10:25 PM CDT | Flash Flood Warning | TSA | Pushmataha | 3 hr |
| May 30, 10:38 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 52 min |
| May 30, 10:58 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 47 min |
| May 30, 11:21 PM CDT | Severe Thunderstorm Warning | OUN | Coal, Hughes | 39 min |
| May 30, 11:26 PM CDT | Severe Thunderstorm Warning | OUN | Carter | 49 min |
| May 31, 12:02 AM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 43 min |
| May 31, 12:05 AM CDT | Severe Thunderstorm Warning | OUN | Jefferson | 40 min |
| May 31, 12:10 AM CDT | Severe Thunderstorm Warning | OUN | Atoka, Coal | 65 min |
| May 31, 12:23 AM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 52 min |
| May 31, 12:56 AM CDT | Flash Flood Warning | TSA | Pushmataha | 3 hr |
| May 31, 12:59 AM CDT | Severe Thunderstorm Warning | FWD | Montague | 61 min |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 2.0 hours before the alert went out and 98 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
- 3451 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1129 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 7.7
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 30, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Tillman | 5 hr |
| May 31, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Cimarron | 5 hr |
| May 30, 7:45 PM CDT | Severe Thunderstorm Watch | SPC | Armstrong, Bailey, Briscoe, Carson, Castro, Cochran and 26 more | 5 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; radar from the NEXRAD Level II archive.