Alert archive / Texas / Mesoscale Discussions in 2004
Mesoscale Discussion 1122
The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2004, 5:39 PM CDT for 9 counties in Oklahoma; 46 counties in Texas. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 6, 2004, 5:39 PM CDT (22:39 UTC)
- Expired
- Jun 6, 2004, 8:15 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 55 counties
Bryan County, OK, Carter County, OK, Cotton County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Stephens County, OK, Archer County, TX, Bosque County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coke County, TX, Coleman County, TX, Collin County, TX, Comanche County, TX, Concho County, TX, Cooke County, TX, Dallas County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Glasscock County, TX, Grayson County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Howard County, TX, Irion County, TX, Jack County, TX, Johnson County, TX, Martin County, TX, McCulloch County, TX, Midland County, TX, Mills County, TX, Mitchell County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Reagan County, TX, Rockwall County, TX, Runnels County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Sterling County, TX, Tarrant County, TX, Tom Green County, TX, Wichita County, TX, Wise County, TX, Young County, TX
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 10.7 hours before the alert went out and 175 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
- 127 J/kg
- Mixed-layer CIN
- -310 J/kg
- Mixed-layer LCL
- 1465 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -124 m²/s²
- 0-3 km storm-relative helicity
- -158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
032 ACUS11 KWNS 062240 SWOMCD SPC MCD 062239 OKZ000-TXZ000-070115- MESOSCALE DISCUSSION 1122 NWS STORM PREDICTION CENTER NORMAN OK 0539 PM CDT SUN JUN 06 2004 AREAS AFFECTED...NRN/CENTRAL TX...SRN OK CONCERNING...SEVERE THUNDERSTORM POTENTIAL...HEAVY RAINFALL VALID 062239Z - 070115Z CONVECTIVE CLUSTER OVER NRN TX WILL CONTINUE TO MOVE SLOWLY NWD OVER THE NEXT FEW HOURS INTO SCENTRAL/SERN OK. ADDITIONAL STORM DEVELOPMENT WILL BE POSSIBLE FROM THE DFW METRO AREA TOWARDS ACT. ISOLATED DAMAGING WINDS AND LARGE HAIL WILL BE POSSIBLE WITH THE STRONGEST STORMS OVER THIS AREA. ADDITIONAL ISOLATED SVR THREAT WILL BE POSSIBLE ALONG OUTFLOW BOUNDARY EXTENDING FROM NEAR MAF EWD TO NEAR SJT. INCREASING LOW LEVEL FLOW WILL AID IN NWD MOVEMENT OF THE OUTFLOW BOUNDARY/NEW CONVECTIVE DEVELOPMENT ON THE NORTH SIDE OF CONVECTIVE CLUSTER INTO A MODERATELY UNSTABLE AIRMASS OVER SCENTRAL/SERN OK WHERE MLCAPES FROM 2000-2500 J/KG EXIST. MEANWHILE 35-40 KT LOW LEVEL JET DEVELOPING OVER NRN/CENTRAL TX WILL AID IN THE POTENTIAL FOR REDEVELOPMENT/BACKBUILDING SOUTH OF THE CURRENT CONVECTIVE CLUSTER BACK INTO NCENTRAL TX. THIS WILL AID TRAINING OF ECHOES AND THE POTENTIAL FOR HEAVY RAINFALL RATES OVER NCENTRAL TX/SCENTRAL OK GIVEN THE MOIST AIRMASS IN PLACE. WARM MID LEVELS AND MULTICELLULAR NATURE OF CONVECTION GIVEN THE WEAK SHEAR OVER NRN TX/SRN OK AND BETWEEN MAF AND SJT WOULD LIMIT A PROLONGED/WELL ORGANIZED SEVERE THREAT AND THUS A WW IS NOT ANTICIPATED. ..CROSBIE.. 06/06/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...TSA...FWD...OUN...SJT...MAF... 31180134 31970234 32400213 32480125 32250057 32000030 32409960 33349899 34399857 34719789 34469657 34339571 33669579 32219663 31689724 31059928
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 7:48 PM CDT | Mesoscale Discussion | SPC | Beaver, Cimarron, Harper, Texas | 57 min |
| Jun 5, 9:51 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 9 more | 54 min |
| Jun 6, 2:07 PM CDT | Mesoscale Discussion | SPC | Bryan, Carter, Johnston, Love, Marshall, Murray | 113 min |
| Jun 6, 3:29 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Garfield, Grant, Kay, Kingfisher, Major and 1 more | 2 hr |
| Jun 5, 11:45 PM CDT | Severe Thunderstorm Watch | SPC | Callahan, Coke, Coleman, Eastland, Fisher, Haskell and 10 more | 5 hr |
| Jun 6, 1:40 AM CDT | Mesoscale Discussion | SPC | Bell, Blanco, Bosque, Brown, Burnet, Callahan and 34 more | 95 min |
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.