Alert archive / Texas / Mesoscale Discussions in 2009
Mesoscale Discussion 875
The Storm Prediction Center issued this mesoscale discussion at May 26, 2009, 7:19 PM CDT for Bryan County, Love County, Marshall County, Oklahoma; 48 counties in Texas. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- May 26, 2009, 7:19 PM CDT (00:19 UTC)
- Expired
- May 26, 2009, 8:45 PM CDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
All 51 counties
Bryan County, OK, Love County, OK, Marshall County, OK, Bosque County, TX, Brown County, TX, Callahan County, TX, Coleman County, TX, Collin County, TX, Comanche County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Fisher County, TX, Grayson County, TX, Hamilton County, TX, Haskell County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Jones County, TX, Kaufman County, TX, Lamar County, TX, McLennan County, TX, Mills County, TX, Montague County, TX, Navarro County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Rains County, TX, Rockwall County, TX, Runnels County, TX, Scurry County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Tarrant County, TX, Taylor County, TX, Throckmorton County, TX, Van Zandt County, TX, Wise County, TX, Young County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 86 km from the middle of the area, began a volume at 00:18 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 Worth, TX (KFWD), launched 00:00Z, 0.3 hours before the alert went out and 100 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
- 1667 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 2295 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| May 26, 10:08 PM CDT | Mesoscale Discussion | SPC | Bryan, Love | 67 min |
| May 26, 8:23 PM CDT | Mesoscale Discussion | SPC | Dimmit, Duval, Edwards, Jim Wells, Kinney, Maverick and 6 more | 2 hr |
| May 27, 8:38 AM CDT | Mesoscale Discussion | SPC | Aransas, Atascosa, Bee, Calhoun, DeWitt, Dimmit and 13 more | 97 min |
| May 27, 3:56 PM CDT | Mesoscale Discussion | SPC | Brooks, Dimmit, Edwards, Frio, Hidalgo, Jim Hogg and 11 more | 64 min |
Nearby
Mesoscale Discussions in Texas, 2009Mesoscale Discussions in Oklahoma, 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.