Alert archive / Oklahoma / Tornado Watches in 2006

Tornado Watch 110

March 30, 200630 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at Mar 30, 2006, 11:08 AM CST for 30 counties in Oklahoma. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Mar 30, 2006, 11:08 AM CST (17:08 UTC)
Expired
Mar 30, 2006, 5:41 PM CST
In force
7 hr
Issued by
the Storm Prediction Center
All 30 counties

Atoka County, OK, Blaine County, OK, Bryan County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK

The radar

The Norman radar (KTLX), 40 km from the middle of the area, began a volume at 17:11 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

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

IssuedProductOfficeCountiesLasted
Mar 30, 11:25 AM CSTSevere Thunderstorm WarningOUNBlaine35 min
Mar 30, 11:44 AM CSTSevere Thunderstorm WarningOUNCaddo, Comanche, Kiowa46 min
Mar 30, 11:57 AM CSTSevere Thunderstorm WarningOUNBlaine, Canadian32 min
Mar 30, 12:29 PM CSTSevere Thunderstorm WarningOUNCaddo, Comanche, Grady46 min
Mar 30, 1:15 PM CSTSevere Thunderstorm WarningOUNCleveland, Cotton, Grady, McClain, Stephens45 min
Mar 30, 1:50 PM CSTSevere Thunderstorm WarningOUNCleveland, Lincoln, Oklahoma, Pottawatomie27 min
Mar 30, 1:57 PM CSTSevere Thunderstorm WarningOUNGarvin, Grady, McClain, Stephens48 min
Mar 30, 2:34 PM CSTTornado WarningOUNGarvin, Stephens26 min
Mar 30, 2:58 PM CSTTornado WarningOUNGarvin32 min
Mar 30, 3:28 PM CSTSevere Thunderstorm WarningOUNGarvin47 min
Mar 30, 4:16 PM CSTSevere Thunderstorm WarningOUNGarvin, Pontotoc44 min
Mar 30, 4:54 PM CSTSevere Thunderstorm WarningOUNLove51 min
Mar 30, 4:57 PM CSTSevere Thunderstorm WarningOUNHughes, Pontotoc48 min
Mar 30, 5:19 PM CSTSevere Thunderstorm WarningTSAPittsburg71 min
Mar 30, 5:41 PM CSTSevere Thunderstorm WarningOUNLove49 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 5.1 hours before the alert went out and 24 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 2006-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1250 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 2006-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 261 square meters per square second.19395878Sfc1 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
1250 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
612 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
261 m²/s²
0-3 km storm-relative helicity
313 m²/s²
Significant tornado parameter
1.2
Supercell composite
6.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 29, 11:16 PM CSTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 27 more119 min
Mar 30, 2:58 AM CSTMesoscale DiscussionSPCBeaver, Ellis, Harper, Woods, Woodward2 hr
Mar 30, 7:07 AM CSTMesoscale DiscussionSPCAdair, Cherokee, Craig, Creek, Delaware, Haskell and 18 more113 min
Mar 30, 8:42 AM CSTTornado WatchSPCAdair, Alfalfa, Cherokee, Craig, Creek, Delaware and 18 more9 hr
Mar 30, 9:42 AM CSTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Custer, Dewey and 8 more93 min
Mar 30, 12:33 PM CSTMesoscale DiscussionSPCAtoka, Canadian, Carter, Cleveland, Coal, Comanche and 17 more117 min
Mar 30, 2:46 PM CSTMesoscale DiscussionSPCAtoka, Canadian, Carter, Cleveland, Coal, Garvin and 15 more119 min
Mar 30, 3:12 PM CSTMesoscale DiscussionSPCKay, Nowata, Osage, Washington63 min
Mar 30, 5:10 PM CSTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Haskell and 13 more2 hr
Mar 30, 5:39 PM CSTTornado WatchSPCAdair, Atoka, Bryan, Carter, Cherokee, Choctaw and 35 more6 hr

Nearby

Tornado Watches in Oklahoma, 2006Every tornado watch in 2006

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.