Alert archive / Oklahoma / Tornado Watches in 2001
Tornado Watch 175
The Storm Prediction Center issued this tornado watch at Apr 22, 2001, 7:00 PM CDT for Benton County, Crawford County, Washington County, Arkansas; 4 counties in Missouri; 33 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 22, 2001, 7:00 PM CDT (00:00 UTC)
- Expired
- Apr 23, 2001, 1:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Benton County, AR, Crawford County, AR, Washington County, AR, Barry County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Adair County, OK, Atoka County, OK, Bryan County, OK, Cherokee County, OK, Choctaw County, OK, Coal County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 114 km from the middle of the area, began a volume at 00:01 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
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 7:17 PM CDT | Severe Thunderstorm Warning | OUN | Pontotoc | 43 min |
| Apr 22, 7:25 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 50 min |
| Apr 22, 7:41 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 49 min |
| Apr 22, 8:07 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 38 min |
| Apr 22, 8:29 PM CDT | Severe Thunderstorm Warning | TSA | Okmulgee | 46 min |
| Apr 22, 8:49 PM CDT | Severe Thunderstorm Warning | OUN | Johnston | 26 min |
| Apr 22, 11:08 PM CDT | Severe Thunderstorm Warning | SGF | McDonald, Newton | 52 min |
| Apr 22, 11:44 PM CDT | Severe Thunderstorm Warning | SGF | Lawrence | 46 min |
| Apr 23, 12:52 AM CDT | Severe Thunderstorm Warning | TSA | Benton | 53 min |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 0.0 hours before the alert went out and 147 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
- 2594 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 258 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| Apr 22, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Holt, Nodaway | 6 hr |
Nearby
Tornado Watches in Oklahoma, 2001Tornado Watches in Missouri, 2001Tornado Watches in Arkansas, 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; radar from the NEXRAD Level II archive.