Alert archive / Texas / Mesoscale Discussions in 2004
Mesoscale Discussion 929
The Storm Prediction Center issued this mesoscale discussion at May 26, 2004, 8:54 PM CDT for Greer County, Harmon County, Jackson County, Oklahoma; 10 counties in Texas. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- May 26, 2004, 8:54 PM CDT (01:54 UTC)
- Expired
- May 26, 2004, 10:00 PM CDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
Counties Greer County, OK, Harmon County, OK, Jackson County, OK, Childress County, TX, Cottle County, TX, Fisher County, TX, Foard County, TX, Hardeman County, TX, Haskell County, TX, King County, TX, Knox County, TX, Stonewall County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 141 km from the middle of the area, began a volume at 01:57 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
Amarillo Airport, TX (KAMA), launched 00:00Z, 1.9 hours before the alert went out and 230 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3336 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
274 ACUS11 KWNS 270155 SWOMCD SPC MCD 270154 OKZ000-TXZ000-270300- MESOSCALE DISCUSSION 0929 NWS STORM PREDICTION CENTER NORMAN OK 0854 PM CDT WED MAY 26 2004 AREAS AFFECTED...WRN/NWRN TX CONCERNING...SEVERE THUNDERSTORM WATCH 297... VALID 270154Z - 270300Z SEVERE THREAT THROUGH THE REMAINDER OF WW 297 EXPIRATION TIME APPEARS TO BE CONFINED TO PORTIONS OF NWRN TX TO THE NORTH OF THE ABI AREA. OVERALL INCREASING CINH EAST OF WW 297 SHOULD PRECLUDE THE NEED FOR ANOTHER WW OVER NCENTRAL TX. ADDITIONAL DEVELOPMENT ALONG THE RETREATING DRYLINE IS POSSIBLE FARTHER NW IN THE VICINITY OF CDS WHERE STRONG CONVERGENCE WILL BE MAINTAINED. HOWEVER OVERALL SEVERE THREAT DOES NOT APPEAR SUFFICIENT AT THIS TIME TO WARRANT A REPLACEMENT WATCH BEYOND 03Z. ADDITIONAL DEVELOPMENT ALONG THE RETREATING DRYLINE IN THE VICINITY MAF APPEARS LESS LIKELY GIVEN WAVE CLOUDS NOTED ON VIS SATELLITE IMAGERY INDICATIVE OF LARGE SCALE SUBSIDENCE. ..CROSBIE.. 05/27/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...OUN...SJT...LUB...AMA...MAF... 32150087 33880050 34750039 35419925 33139923
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 7:57 PM CDT | Mesoscale Discussion | SPC | Craig, Ottawa | 63 min |
| May 26, 8:29 PM CDT | Mesoscale Discussion | SPC | Adair, Alfalfa, Beckham, Blaine, Caddo, Canadian and 40 more | 91 min |
| May 27, 10:29 AM CDT | Mesoscale Discussion | SPC | Greer, Harmon, Jackson, Tillman | 2 hr |
| May 27, 6:10 AM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Coke, Crane, Crockett, Crosby and 25 more | 3 hr |
| May 27, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Callahan, Coke, Coleman, Comanche, Concho and 29 more | 6 hr |
| May 27, 4:04 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Callahan, Coke, Coleman, Collin and 50 more | 116 min |
| May 27, 5:35 PM CDT | Severe Thunderstorm Watch | SPC | Bosque, Collin, Cooke, Dallas, Delta, Denton and 22 more | 5 hr |
Nearby
Mesoscale Discussions in Texas, 2004Mesoscale Discussions in Oklahoma, 2004Every mesoscale discussion in 2004
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.