Alert archive / Oklahoma / Mesoscale Discussions in 2008

Mesoscale Discussion 149

February 5, 200830 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Feb 5, 2008, 2:31 AM CST for 30 counties in Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Feb 5, 2008, 2:31 AM CST (08:31 UTC)
Expired
Feb 5, 2008, 5:00 AM CST
In force
2 hr
Issued by
the Storm Prediction Center
All 30 counties

Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Creek County, OK, Custer County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK

The radar

The Norman radar (KTLX), 88 km from the middle of the area, began a volume at 08:33 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, 8.5 hours before the alert went out and 78 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 2008-02-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2008-02-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3773 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
203 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 4, 7:48 PM CSTMesoscale DiscussionSPCCraig, Creek, Delaware, Lincoln, Mayes, Nowata and 6 more87 min
Feb 5, 5:03 AM CSTMesoscale DiscussionSPCAtoka, Bryan, Carter, Cherokee, Choctaw, Cleveland and 37 more117 min
Feb 5, 6:39 AM CSTMesoscale DiscussionSPCAdair, LeFlore, Sequoyah3 hr
Feb 5, 10:18 AM CSTMesoscale DiscussionSPCAdair, Atoka, Cherokee, Coal, Delaware, Haskell and 13 more87 min
Feb 5, 11:56 AM CSTTornado WatchSPCAtoka, Bryan, Choctaw, Haskell, Latimer, LeFlore and 4 more7 hr
Feb 5, 2:15 PM CSTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Haskell, Latimer, McCurtain and 1 more90 min
Feb 5, 3:17 PM CSTMesoscale DiscussionSPCLeFlore, McCurtain88 min

Nearby

Mesoscale Discussions in Oklahoma, 2008Every mesoscale discussion in 2008

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.