Alert archive / Texas / Mesoscale Discussions in 2012
Mesoscale Discussion 1040
The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2012, 8:03 PM CDT for 9 counties in Oklahoma; 18 counties in Texas. It was in force for 57 min.
The area
The outline as issued.
The facts
- Issued
- Jun 3, 2012, 8:03 PM CDT (01:03 UTC)
- Expired
- Jun 3, 2012, 9:00 PM CDT
- In force
- 57 min
- Issued by
- the Storm Prediction Center
All 27 counties
Beaver County, OK, Beckham County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Roger Mills County, OK, Tillman County, OK, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Dickens County, TX, Donley County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Motley County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 140 km from the middle of the area, began a volume at 01:07 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 00:00Z, 1.1 hours before the alert went out and 144 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
- 1465 J/kg
- Mixed-layer CIN
- -129 J/kg
- Mixed-layer LCL
- 2757 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
762
ACUS11 KWNS 040104
SWOMCD
SPC MCD 040103
OKZ000-TXZ000-KSZ000-040200-
MESOSCALE DISCUSSION 1040
NWS STORM PREDICTION CENTER NORMAN OK
0803 PM CDT SUN JUN 03 2012
AREAS AFFECTED...ERN TX/OK PANHANDLE...WRN OK...NWRN TX
CONCERNING...TORNADO WATCH 347...
VALID 040103Z - 040200Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 347 CONTINUES.
SUMMARY...CONTINUING TO MONITOR FOR A POSSIBLE SEVERE WATCH ISSUANCE
TO THE S OF WW 347.
DISCUSSION...WITH BEAVER COUNTY OK CELL HAVING WEAKENED IN THE PAST
30 MINUTES...MOST INTENSE CELLS ARE NOW ALONG DRYLINE IN ERN TX
PANHANDLE TO THE S OF WW 347. ALTHOUGH TORNADO THREAT IS MINIMAL
WITH THESE SRN CELLS GIVEN 40-50 DEG F SURFACE DEW POINT
DEPRESSIONS...A RISK FOR SEVERE HAIL/WIND SHOULD PERSIST FOR THE
NEXT FEW HOURS. CONVECTION HAS LARGELY STRUGGLED TO DEVELOP EWD WITH
WEAK DEEP-LAYER WLYS NOTED IN THE 00Z AMA RAOB. IT IS PLAUSIBLE THAT
AS A SWLY LLJ STRENGTHENS THROUGH THE EVENING...WITH ENOUGH COLD
POOL CONGLOMERATION...A SLOW-MOVING CLUSTER MAY EVOLVE E/SEWD ALONG
THE RED RIVER.
..GRAMS.. 06/04/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...OUN...DDC...SJT...LUB...AMA...
LAT...LON 35459915 34359891 33829907 33399957 33280003 33620107
33960125 34610106 35360098 36290098 36940065 37150034
37219986 37169966 35459915SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 7:47 PM CDT | Mesoscale Discussion | SPC | Adair, Cherokee, Craig, Delaware, Mayes, Nowata and 6 more | 58 min |
| Jun 3, 9:46 PM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 27 more | 59 min |
| Jun 3, 10:06 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Blaine, Caddo, Canadian, Comanche, Cotton and 14 more | 3 hr |
| Jun 3, 11:25 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Cherokee, Craig, Creek, Delaware, Haskell and 14 more | 8 hr |
| Jun 4, 1:51 AM CDT | Mesoscale Discussion | SPC | Adair, Cherokee, Craig, Creek, Delaware, Mayes and 9 more | 54 min |
| Jun 4, 3:39 AM CDT | Mesoscale Discussion | SPC | Sequoyah | 96 min |
| Jun 4, 3:59 PM CDT | Mesoscale Discussion | SPC | Cimarron, Texas | 91 min |
| Jun 4, 4:00 PM CDT | Mesoscale Discussion | SPC | Bailey, Castro, Cochran, Deaf Smith, Floyd, Hale and 7 more | 90 min |
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.