Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 1017
The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2012, 9:15 PM CDT for Jackson County, Oklahoma; 28 counties in Texas. It was in force for 60 min.
The area
The outline as issued.
The facts
- Issued
- Jun 1, 2012, 9:15 PM CDT (02:15 UTC)
- Expired
- Jun 1, 2012, 10:15 PM CDT
- In force
- 60 min
- Issued by
- the Storm Prediction Center
All 29 counties
Jackson County, OK, Bailey County, TX, Baylor County, TX, Briscoe County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Hockley County, TX, Kent County, TX, King County, TX, Knox County, TX, Lamb County, TX, Lubbock County, TX, Motley County, TX, Parmer County, TX, Stonewall County, TX, Swisher County, TX, Throckmorton County, TX, Wilbarger County, TX
The radar
The Lubbock radar (KLBB), 125 km from the middle of the area, began a volume at 02:18 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
Amarillo Airport, TX (KAMA), launched 00:00Z, 2.3 hours before the alert went out and 161 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
- 1358 J/kg
- Mixed-layer CIN
- -240 J/kg
- Mixed-layer LCL
- 1676 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 348 m²/s²
- 0-3 km storm-relative helicity
- 484 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.3
The text
As transmitted, in the capitals the NWS used until 2016.
003
ACUS11 KWNS 020216
SWOMCD
SPC MCD 020215
TXZ000-OKZ000-020315-
MESOSCALE DISCUSSION 1017
NWS STORM PREDICTION CENTER NORMAN OK
0915 PM CDT FRI JUN 01 2012
AREAS AFFECTED...TX SOUTH PLAINS INTO WRN NORTH TX AND FAR SW OK
CONCERNING...SEVERE THUNDERSTORM WATCH 337...
VALID 020215Z - 020315Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 337
CONTINUES.
SUMMARY...THE OVERALL TREND IN STORM EVOLUTION HAS BEEN FOR GRADUAL
WEAKENING TO OCCUR AND THIS IS EXPECTED TO CONTINUE OVER THE NEXT
HOUR OR TWO. ISOLATED SEVERE WIND/HAIL THREAT MAY CONTINUE FOR A
SHORT WHILE BUT OVERALL SEVERE THREAT IS DECREASING.
DISCUSSION...OVERALL TREND THE LAST 30-45 MINUTES HAS BEEN FOR
STORMS TO WEAKEN AS THE BOUNDARY LAYER HAS BEGUN TO COOL AND
INHIBITION WAS INCREASING. ADDITIONALLY...0155Z IMAGERY SHOWED
SLIGHT WARMING OF CLOUD TOPS AND LOCAL WSR-88D MESH CORES HAD
DECREASED. MARGINALLY SEVERE WIND GUSTS AND HAIL MAY STILL BE
POSSIBLE OVER THE NEXT HOUR OR SO AS LOW LEVEL LAPSE RATES REMAIN
STEEP BUT AS SFC COOLING CONTINUES DAMAGING WIND THREAT WILL
DECREASE. EFFECTIVE SHEAR ALSO DROPS OFF MARKEDLY ACROSS SOUTHEAST
PORTIONS OF THE WATCH...FURTHER LENDING SUPPORT FOR CONTINUED
WEAKENING TREND. ACROSS WESTERN PORTIONS OF THE WATCH AREA SHEAR
REMAINS STRONG AND STORMS MAY TRY TO MAINTAIN MARGINALLY SEVERE
CHARACTERISTICS A WHILE LONGER. OVERALL...SEVERE THREAT APPEARS TO
BE DIMINISHING.
..LEITMAN.. 06/02/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...FWD...OUN...SJT...LUB...MAF...
LAT...LON 34710299 34709999 34529999 34499968 34719965 34799918
34209916 34169894 32899891 32920153 33360153 33330301
34710299SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 2:38 PM CDT | Mesoscale Discussion | SPC | Cimarron | 97 min |
| Jun 2, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | Cimarron, Texas | 7 hr |
| Jun 2, 5:57 PM CDT | Mesoscale Discussion | SPC | Cimarron, Texas | 2 hr |
Nearby
Mesoscale Discussions in Texas, 2012Mesoscale Discussions in Oklahoma, 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; radar from the NEXRAD Level II archive.