Alert archive / Oklahoma / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 733
The Storm Prediction Center issued this severe thunderstorm watch at Sep 8, 2001, 7:00 PM CDT for 29 counties in Oklahoma. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 8, 2001, 7:00 PM CDT (00:00 UTC)
- Expired
- Sep 9, 2001, 12:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 29 counties
Adair County, OK, Caddo County, OK, Cherokee County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Lincoln County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Ottawa County, OK, Pontotoc County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK
The radar
The Norman radar (KTLX), 34 km from the middle of the area, began a volume at 00:12 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
Norman, OK (KOUN), launched 00:00Z, 0.0 hours before the alert went out and 49 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
- 172 J/kg
- Mixed-layer CIN
- -243 J/kg
- Mixed-layer LCL
- 953 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -78 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -3.7
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 |
|---|---|---|---|---|
| Sep 8, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Choctaw, Coal, Haskell, Johnston and 6 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Oklahoma, 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.