Alert archive / Oklahoma / Mesoscale Discussions in 2009
Mesoscale Discussion 337
The Storm Prediction Center issued this mesoscale discussion at Mar 30, 2009, 7:40 PM CDT for 13 counties in Kansas; 47 counties in Oklahoma; Clay County, Cooke County, Grayson County, Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 30, 2009, 7:40 PM CDT (00:40 UTC)
- Expired
- Mar 30, 2009, 9:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 63 counties
Butler County, KS, Chautauqua County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harvey County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS, Atoka County, OK, Bryan County, OK, Canadian County, OK, Carter County, OK, Cherokee County, OK, Cleveland County, OK, Coal County, OK, Craig County, OK, Creek County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Haskell County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Kay County, OK, Kingfisher County, OK, Latimer County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Noble County, OK, Nowata 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, Rogers County, OK, Seminole County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Clay County, TX, Cooke County, TX, Grayson County, TX
The radar
The Tulsa radar (KINX), 79 km from the middle of the area, began a volume at 00:41 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 0.7 hours before the alert went out and 118 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.
- Mixed-layer CAPE
- 118 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1627 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 133 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 10:10 PM CDT | Mesoscale Discussion | SPC | Cherokee, Labette, Montgomery, Neosho, Wilson | 95 min |
| Mar 30, 8:31 PM CDT | Mesoscale Discussion | SPC | Love | 89 min |
| Mar 30, 11:42 PM CDT | Mesoscale Discussion | SPC | Bryan, Choctaw, Haskell, Latimer, LeFlore, McCurtain and 1 more | 2 hr |
| Mar 30, 8:49 PM CDT | Severe Thunderstorm Watch | SPC | Collin, Cooke, Dallas, Delta, Denton, Ellis and 16 more | 5 hr |
| Mar 30, 10:27 PM CDT | Mesoscale Discussion | SPC | Camp, Collin, Cooke, Dallas, Delta, Denton and 23 more | 93 min |
| Mar 31, 11:54 AM CDT | Mesoscale Discussion | SPC | Newton, Orange | 96 min |
| Mar 31, 2:44 PM CDT | Mesoscale Discussion | SPC | Newton, Orange | 91 min |
Nearby
Mesoscale Discussions in Oklahoma, 2009Mesoscale Discussions in Kansas, 2009Mesoscale Discussions in Texas, 2009Every mesoscale discussion in 2009
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.