Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 1055
The Storm Prediction Center issued this mesoscale discussion at Jun 4, 2012, 3:00 PM MDT for 4 counties in New Mexico; 13 counties in Texas. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Jun 4, 2012, 3:00 PM MDT (21:00 UTC)
- Expired
- Jun 4, 2012, 4:30 PM MDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
Counties Curry County, NM, De Baca County, NM, Quay County, NM, Roosevelt County, NM, Bailey County, TX, Castro County, TX, Cochran County, TX, Deaf Smith County, TX, Floyd County, TX, Hale County, TX, Hockley County, TX, Lamb County, TX, Lubbock County, TX, Oldham County, TX, Parmer County, TX, Randall County, TX, Swisher County, TX
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 9.0 hours before the alert went out and 136 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
- 1197 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 1909 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
610 ACUS11 KWNS 042101 SWOMCD SPC MCD 042100 TXZ000-NMZ000-042230- MESOSCALE DISCUSSION 1055 NWS STORM PREDICTION CENTER NORMAN OK 0400 PM CDT MON JUN 04 2012 AREAS AFFECTED...EASTERN NM AND TX PANHANDLE/TX SOUTHERN PLAINS CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE VALID 042100Z - 042230Z PROBABILITY OF WATCH ISSUANCE...40 PERCENT SUMMARY...A LOCALIZED DOWNBURST/PULSE-HAIL THREAT WILL EXIST INTO EARLY EVENING ACROSS PORTIONS OF EAST-CENTRAL NM AND THE TX PANHANDLE/TX SOUTH PLAINS...WITH LOCALLY HEAVY RAINFALL POSSIBLE AS WELL. A WATCH DOES NOT APPEAR LIKELY UNLESS STORM-SCALE TRENDS DICTATE OTHERWISE. DISCUSSION...TSTMS HAVE INCREASED OVER THE PAST FEW HOURS IN VICINITY OF A WEAK BOUNDARY AND OTHERWISE AN EASTERLY LOW-LEVEL UPSLOPE REGIME ACROSS THE REGION. WITH VERY WEAK DEEP TROPOSPHERIC FLOW IN PROXIMITY TO THE UPPER RIDGE...STORMS WILL LIKELY CONTINUE TO PROPAGATE GENERALLY WESTWARD ACROSS THE REGION. PARTICULARLY ORGANIZED/SUSTAINED INDIVIDUAL UPDRAFTS ARE NOT EXPECTED...BUT AMPLE INSTABILITY AND A DEEPLY MIXED BOUNDARY LAYER MAY ALLOW FOR SOME DOWNBURST AND PULSE-TYPE HAIL POTENTIAL INTO EARLY EVENING. ..GUYER/CARBIN.. 06/04/2012 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LUB...AMA...MAF...ABQ... LAT...LON 35690427 35500208 34090089 33310157 33390487 35690427
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 2:59 PM MDT | Mesoscale Discussion | SPC | Union | 91 min |
| Jun 3, 7:03 PM MDT | Mesoscale Discussion | SPC | Childress, Collingsworth, Cottle, Dickens, Donley, Foard and 12 more | 57 min |
| Jun 3, 8:46 PM MDT | Mesoscale Discussion | SPC | Hardeman, Wichita, Wilbarger | 59 min |
Nearby
Mesoscale Discussions in Texas, 2012Mesoscale Discussions in New Mexico, 2012Every mesoscale discussion in 2012
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.