Alert archive / Oklahoma / Mesoscale Discussions in 2007
Mesoscale Discussion 377
The Storm Prediction Center issued this mesoscale discussion at Mar 30, 2007, 11:25 AM CDT for 52 counties in Oklahoma. It was in force for 65 min.
The area
The outline as issued.
The facts
- Issued
- Mar 30, 2007, 11:25 AM CDT (16:25 UTC)
- Expired
- Mar 30, 2007, 12:30 PM CDT
- In force
- 65 min
- Issued by
- the Storm Prediction Center
All 52 counties
Alfalfa County, OK, 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, Creek County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Latimer County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, Marshall County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Noble 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, Washita County, OK, Woods County, OK, Woodward County, OK
The radar
The Norman radar (KTLX), 20 km from the middle of the area, began a volume at 16:25 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 12:00Z, 4.4 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.
- Mixed-layer CAPE
- 583 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 189 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.4
- 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 29, 10:01 PM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 26 more | 119 min |
| Mar 30, 1:31 PM CDT | Tornado Watch | SPC | Atoka, Bryan, Caddo, Canadian, Carter, Choctaw and 33 more | 6 hr |
| Mar 30, 3:31 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Cleveland, Coal, Garvin and 19 more | 89 min |
| Mar 30, 6:53 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Cleveland, Coal and 23 more | 97 min |
Nearby
Mesoscale Discussions in Oklahoma, 2007Every mesoscale discussion in 2007
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.