Alert archive / Oklahoma / Mesoscale Discussions in 2006

Mesoscale Discussion 332

March 20, 200616 counties in Oklahoma; 5 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Mar 20, 2006, 12:47 PM CST for 16 counties in Oklahoma; 5 counties in Texas. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
Mar 20, 2006, 12:47 PM CST (18:47 UTC)
Expired
Mar 20, 2006, 2:15 PM CST
In force
88 min
Issued by
the Storm Prediction Center
All 21 counties

Beckham County, OK, Caddo County, OK, Carter County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Love County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Clay County, TX, Hardeman County, TX, Montague County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 29 km from the middle of the area, began a volume at 18:48 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

Fort Sill, OK (KFSI), launched 12:00Z, 6.8 hours before the alert went out and 37 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, Fort Sill, OK at 12:00Z on 2006-03-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Sill, OK at 12:00Z on 2006-03-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 286 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
734 m above ground
0-6 km bulk shear
81 kt
0-1 km storm-relative helicity
286 m²/s²
0-3 km storm-relative helicity
335 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
Mar 20, 4:25 PM CSTSevere Thunderstorm WatchSPCAtoka, Bryan, Choctaw, Coal, Haskell, Hughes and 10 more5 hr
Mar 20, 4:58 PM CSTMesoscale DiscussionSPCBlaine, Canadian, Carter, Cleveland, Coal, Garvin and 13 more92 min
Mar 19, 6:09 PM CSTSevere Thunderstorm WatchSPCAndrews, Bailey, Castro, Cochran, Crane, Deaf Smith and 12 more7 hr
Mar 19, 8:34 PM CSTTornado WatchSPCAtascosa, Austin, Bandera, Bastrop, Bell, Bexar and 39 more7 hr
Mar 19, 8:54 PM CSTMesoscale DiscussionSPCAndrews, Bailey, Castro, Cochran, Crosby, Dawson and 17 more2 hr
Mar 19, 9:48 PM CSTSevere Thunderstorm WatchSPCBaylor, Borden, Briscoe, Callahan, Childress, Coke and 33 more5 hr
Mar 19, 10:32 PM CSTMesoscale DiscussionSPCAtascosa, Austin, Bandera, Bastrop, Bexar, Brazos and 28 more118 min
Mar 19, 11:37 PM CSTMesoscale DiscussionSPCAtascosa, Austin, Bandera, Bastrop, Bexar, Brazos and 28 more83 min
Mar 20, 1:26 AM CSTMesoscale DiscussionSPCAngelina, Aransas, Atascosa, Austin, Bastrop, Bee and 59 more64 min
Mar 20, 2:08 AM CSTMesoscale DiscussionSPCBaylor, Callahan, Childress, Coke, Coleman, Cottle and 17 more67 min
Mar 20, 3:36 AM CSTMesoscale DiscussionSPCAngelina, Austin, Brazoria, Brazos, Burleson, Chambers and 27 more24 min
Mar 20, 4:21 AM CSTMesoscale DiscussionSPCAngelina, Hardin, Jasper, Liberty, Montgomery, Newton and 7 more24 min
Mar 20, 4:44 AM CSTTornado WatchSPCHardin, Jasper, Newton, Tyler5 hr
Mar 20, 6:36 AM CSTMesoscale DiscussionSPCJasper, Newton, Sabine, San Augustine54 min
Mar 20, 9:20 AM CSTMesoscale DiscussionSPCHardin, Jasper, Liberty, Newton, Polk, Sabine and 1 more85 min

Nearby

Mesoscale Discussions in Oklahoma, 2006Mesoscale Discussions in Texas, 2006Every mesoscale discussion 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.