Alert archive / Oklahoma / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 195

April 23, 200021 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Apr 23, 2000, 1:45 PM CDT for 21 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 23, 2000, 1:45 PM CDT (18:45 UTC)
Expired
Apr 23, 2000, 7:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 21 counties

Adair County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Kay County, OK, Lincoln County, OK, Logan County, OK, Mayes County, OK, Muskogee County, OK, Noble County, OK, Nowata County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 81 km from the middle of the area, began a volume at 18:44 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

16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 23, 1:56 PM CDTSevere Thunderstorm WarningTSACherokee49 min
Apr 23, 2:00 PM CDTSevere Thunderstorm WarningTSATulsa45 min
Apr 23, 2:15 PM CDTSevere Thunderstorm WarningTSAMuskogee45 min
Apr 23, 2:44 PM CDTSevere Thunderstorm WarningTSAPawnee61 min
Apr 23, 3:29 PM CDTSevere Thunderstorm WarningTSAOsage61 min
Apr 23, 3:55 PM CDTSevere Thunderstorm WarningTSAMuskogee50 min
Apr 23, 4:01 PM CDTSevere Thunderstorm WarningOUNLincoln59 min
Apr 23, 4:02 PM CDTSevere Thunderstorm WarningTSANowata, Washington58 min
Apr 23, 4:18 PM CDTSevere Thunderstorm WarningTSAAdair, Sequoyah57 min
Apr 23, 4:26 PM CDTSevere Thunderstorm WarningTSAOsage64 min
Apr 23, 4:40 PM CDTSevere Thunderstorm WarningTSACraig50 min
Apr 23, 4:42 PM CDTSevere Thunderstorm WarningTSACreek, Okmulgee48 min
Apr 23, 4:50 PM CDTSevere Thunderstorm WarningTSANowata, Rogers, Tulsa, Washington40 min
Apr 23, 5:25 PM CDTSevere Thunderstorm WarningTSARogers, Tulsa50 min
Apr 23, 5:26 PM CDTSevere Thunderstorm WarningTSAOkfuskee, Okmulgee49 min
Apr 23, 5:36 PM CDTSevere Thunderstorm WarningTSACreek39 min

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 6.8 hours before the alert went out and 167 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 12:00Z on 2000-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 76 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 12:00Z on 2000-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 340 square meters per square second.1939587897Sfc1 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
76 J/kg
Mixed-layer CIN
-265 J/kg
Mixed-layer LCL
1004 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
340 m²/s²
0-3 km storm-relative helicity
352 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 23, 1:00 PM CDTTornado WatchSPCAtoka, Choctaw, Haskell, Latimer, LeFlore, McCurtain and 4 more6 hr

Nearby

Severe Thunderstorm Watches in Oklahoma, 2000Every severe thunderstorm watch in 2000

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.