Alert archive / Oklahoma / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 483

June 30, 200138 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Jun 30, 2001, 1:00 AM CDT for 38 counties in Oklahoma. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 30, 2001, 1:00 AM CDT (06:00 UTC)
Expired
Jun 30, 2001, 7:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 38 counties

Alfalfa County, OK, Atoka County, OK, Bryan County, OK, Choctaw County, OK, Cleveland County, OK, Coal County, OK, Creek County, OK, Garfield County, OK, Garvin County, OK, Grant County, OK, Hughes County, OK, Johnston County, OK, Kay County, OK, Kingfisher County, OK, Latimer County, OK, Lincoln County, OK, Logan County, OK, Marshall County, OK, McClain County, OK, McCurtain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 87 km from the middle of the area, began a volume at 06:02 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.

IssuedProductOfficeCountiesLasted
Jun 30, 1:04 AM CDTSevere Thunderstorm WarningTSAMcIntosh36 min
Jun 30, 1:23 AM CDTSevere Thunderstorm WarningOUNPayne52 min
Jun 30, 1:27 AM CDTSevere Thunderstorm WarningOUNPottawatomie, Seminole48 min
Jun 30, 1:37 AM CDTSevere Thunderstorm WarningTSAMuskogee68 min
Jun 30, 1:41 AM CDTSevere Thunderstorm WarningTSAMcIntosh64 min
Jun 30, 1:55 AM CDTSevere Thunderstorm WarningOUNLincoln50 min
Jun 30, 2:11 AM CDTSevere Thunderstorm WarningTSAPittsburg64 min
Jun 30, 2:13 AM CDTSevere Thunderstorm WarningOUNPottawatomie, Seminole62 min
Jun 30, 2:15 AM CDTFlash Flood WarningTSAHaskell, McIntosh2 hr
Jun 30, 2:18 AM CDTSevere Thunderstorm WarningOUNGarfield57 min
Jun 30, 2:35 AM CDTSevere Thunderstorm WarningTSAPushmataha55 min
Jun 30, 2:38 AM CDTSevere Thunderstorm WarningOUNLincoln37 min
Jun 30, 2:40 AM CDTSevere Thunderstorm WarningOUNAtoka50 min
Jun 30, 2:43 AM CDTFlash Flood WarningOUNPottawatomie, Seminole4 hr
Jun 30, 2:59 AM CDTFlash Flood WarningTSAPittsburg2 hr
Jun 30, 3:14 AM CDTSevere Thunderstorm WarningOUNLincoln, Pottawatomie46 min
Jun 30, 3:17 AM CDTSevere Thunderstorm WarningTSAPittsburg58 min
Jun 30, 3:58 AM CDTSevere Thunderstorm WarningOUNGarvin, McClain, Pottawatomie47 min
Jun 30, 4:17 AM CDTSevere Thunderstorm WarningTSAPittsburg43 min
Jun 30, 4:43 AM CDTSevere Thunderstorm WarningOUNGarvin, Murray47 min

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 6.0 hours before the alert went out and 110 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.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2001-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1853 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2001-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1853 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
1446 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
227 m²/s²
Significant tornado parameter
0.6
Supercell composite
7.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.