Alert archive / Oklahoma / Mesoscale Discussions in 2003
Mesoscale Discussion 228
The Storm Prediction Center issued this mesoscale discussion at Mar 12, 2003, 11:03 PM CST for 23 counties in Oklahoma. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Mar 12, 2003, 11:03 PM CST (05:03 UTC)
- Expired
- Mar 13, 2003, 1:00 AM CST
- In force
- 117 min
- Issued by
- the Storm Prediction Center
All 23 counties
Atoka County, OK, Caddo County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Garvin County, OK, Grady County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Stephens County, OK
The radar
The Norman radar (KTLX), 50 km from the middle of the area, began a volume at 05:06 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, 5.1 hours before the alert went out and 52 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
- 2180 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1353 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 5.2
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 12, 7:48 PM CST | Mesoscale Discussion | SPC | Craig, Delaware, Nowata, Osage, Ottawa, Rogers and 1 more | 57 min |
| Mar 12, 8:25 PM CST | Severe Thunderstorm Watch | SPC | Craig, Nowata, Ottawa, Washington | 6 hr |
| Mar 12, 8:36 PM CST | Mesoscale Discussion | SPC | Caddo, Canadian, Cleveland, Creek, Grady, Kingfisher and 12 more | 84 min |
| Mar 12, 8:55 PM CST | Severe Thunderstorm Watch | SPC | Adair, Blaine, Caddo, Canadian, Cherokee, Cleveland and 27 more | 5 hr |
| Mar 12, 9:52 PM CST | Mesoscale Discussion | SPC | Craig, Nowata, Ottawa, Washington | 113 min |
| Mar 13, 12:56 AM CST | Mesoscale Discussion | SPC | McCurtain | 2 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2003Every mesoscale discussion in 2003
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.