Alert archive / Texas / Mesoscale Discussions in 2006
Mesoscale Discussion 270
The Storm Prediction Center issued this mesoscale discussion at Mar 12, 2006, 8:45 PM CST for 11 counties in Oklahoma; 15 counties in Texas. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 12, 2006, 8:45 PM CST (02:45 UTC)
- Expired
- Mar 12, 2006, 11:15 PM CST
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 26 counties
Atoka County, OK, Bryan County, OK, Carter County, OK, Coal County, OK, Garvin County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Pontotoc County, OK, Collin County, TX, Comanche County, TX, Cooke County, TX, Denton County, TX, Erath County, TX, Grayson County, TX, Hood County, TX, Jack County, TX, Johnson County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Somervell County, TX, Tarrant County, TX, Wise County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 104 km from the middle of the area, began a volume at 02:51 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
Fort Worth, TX (KFWD), launched 00:00Z, 2.8 hours before the alert went out and 77 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
- 1953 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 1576 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.6
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, 6:21 PM CST | Mesoscale Discussion | SPC | Cherokee, Craig, Creek, Delaware, McIntosh, Mayes and 8 more | 114 min |
| Mar 12, 9:13 PM CST | Mesoscale Discussion | SPC | Adair, Cherokee, Craig, Creek, Delaware, McIntosh and 11 more | 62 min |
| Mar 12, 9:34 PM CST | Tornado Watch | SPC | Adair, Cherokee, Craig, Creek, Delaware, Haskell and 19 more | 7 hr |
| Mar 12, 11:30 PM CST | Mesoscale Discussion | SPC | Adair, Cherokee, Craig, Delaware, Haskell, McIntosh and 7 more | 2 hr |
| Mar 12, 11:53 PM CST | Tornado Watch | SPC | Choctaw, McCurtain, Pushmataha | 6 hr |
Nearby
Mesoscale Discussions in Texas, 2006Mesoscale Discussions in Oklahoma, 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.