Alert archive / Oklahoma / Mesoscale Discussions in 2014
Mesoscale Discussion 849
The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2014, 1:17 AM CDT for 34 counties in Oklahoma; 6 counties in Texas. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Jun 6, 2014, 1:17 AM CDT (06:17 UTC)
- Expired
- Jun 6, 2014, 2:45 AM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 40 counties
Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Creek County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Hughes County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Murray County, OK, Okfuskee County, OK, Oklahoma County, OK, Pontotoc County, OK, Pottawatomie County, OK, Roger Mills County, OK, Seminole County, OK, Stephens County, OK, Washita County, OK, Woodward County, OK, Collingsworth County, TX, Gray County, TX, Hemphill County, TX, Lipscomb County, TX, Roberts County, TX, Wheeler County, TX
The radar
The Altus AFB radar (KFDR), 96 km from the middle of the area, began a volume at 06:18 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 6.3 hours before the alert went out and 147 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
- 1680 J/kg
- Mixed-layer CIN
- -224 J/kg
- Mixed-layer LCL
- 1878 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
434
ACUS11 KWNS 060618
SWOMCD
SPC MCD 060617
OKZ000-TXZ000-060745-
MESOSCALE DISCUSSION 0849
NWS STORM PREDICTION CENTER NORMAN OK
0117 AM CDT FRI JUN 06 2014
AREAS AFFECTED...THE TX PANHANDLE EWD ACROSS WRN AND CENTRAL OK
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 060617Z - 060745Z
PROBABILITY OF WATCH ISSUANCE...60 PERCENT
SUMMARY...STORMS CONTINUE TO INCREASE ACROSS THE TX PANHANDLE...AND
SHOULD MOVE EWD WHILE EXPANDING IN COVERAGE. RISK FOR HAIL AND
DAMAGING WINDS MAY BECOME SUFFICIENT TO WARRANT WW ISSUANCE.
DISCUSSION...STORMS CONTINUE DEVELOPING ATTM IN A W TO E BAND ALONG
THE AMA LATITUDE...WITH RECENT INTENSIFICATION OF A FEW CELLS TO
SEVERE LEVELS /A RECENT GUST OF 69 MPH HAS BEEN REPORTED/. THE
STORMS ARE DEVELOPING NEAR/JUST N OF THE W-E SURFACE FRONT...AND
WITH ELY LOW-LEVEL FLOW N OF THE FRONT BENEATH 35 TO 45 KT WLYS AT
MID LEVELS...EWD PROPAGATION OF THE CONVECTION INTO A FAVORABLY
UNSTABLE DOWNSTREAM AIRMASS ACROSS OK /IN EXCESS OF 2500 J/KG CAPE
ABOVE THE CAPPING LAYER/ IS EXPECTED.
GIVEN THE AFOREMENTIONED KINEMATIC/THERMODYNAMIC
ENVIRONMENT...EXPECT INTENSE/ROTATING STORMS...WITH LIKELIHOOD FOR
UPSCALE GROWTH INTO A BOWING MCS. THUS...POTENTIAL FOR DAMAGING
WINDS IS EVIDENT IN ADDITION TO LARGE HAIL...WITH DEGREE OF THIS
THREAT MODULATED BY DEGREE OF LINEAR ORGANIZATION STORMS CAN
ACQUIRE.
..GOSS/HART.. 06/06/2014
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...TSA...OUN...LUB...AMA...
LAT...LON 35060077 35990133 36499968 35959616 34619626 34049715
34600000 35060077SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 7:37 PM CDT | Mesoscale Discussion | SPC | Cimarron | 113 min |
| Jun 5, 7:54 PM CDT | Mesoscale Discussion | SPC | Cimarron, Texas | 2 hr |
| Jun 5, 9:14 PM CDT | Mesoscale Discussion | SPC | Craig, Delaware, Grant, Kay, Noble, Nowata and 3 more | 3 hr |
| Jun 5, 9:36 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Alfalfa, Cherokee, Craig, Creek, Delaware and 15 more | 7 hr |
| Jun 5, 11:49 PM CDT | Mesoscale Discussion | SPC | Cimarron | 116 min |
| Jun 6, 1:43 AM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 27 more | 6 hr |
| Jun 6, 4:05 AM CDT | Mesoscale Discussion | SPC | Adair, Beckham, Blaine, Caddo, Canadian, Cherokee and 39 more | 115 min |
| Jun 6, 5:47 AM CDT | Mesoscale Discussion | SPC | Beaver, Beckham, Blaine, Caddo, Canadian, Comanche and 13 more | 88 min |
| Jun 6, 7:02 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 30 more | 5 hr |
| Jun 6, 9:52 AM CDT | Mesoscale Discussion | SPC | LeFlore, McCurtain | 53 min |
| Jun 6, 10:18 AM CDT | Severe Thunderstorm Watch | SPC | McCurtain | 5 hr |
| Jun 6, 1:29 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beaver, Grant, Harper, Major, Woods and 1 more | 3 hr |
| Jun 6, 3:23 PM CDT | Mesoscale Discussion | SPC | Cimarron, Texas | 67 min |
| Jun 6, 3:43 PM CDT | Tornado Watch | SPC | Beaver, Cimarron, Texas | 6 hr |
| Jun 6, 6:25 PM CDT | Mesoscale Discussion | SPC | Beaver, Cimarron, Texas | 95 min |
| Jun 6, 6:44 PM CDT | Tornado Watch | SPC | Beaver, Cimarron, Texas | 6 hr |
| Jun 6, 1:51 PM CDT | Mesoscale Discussion | SPC | Dallam, Deaf Smith, Hartley, Oldham, Parmer | 114 min |
| Jun 6, 5:07 PM CDT | Mesoscale Discussion | SPC | Andrews, Ector, Gaines, Loving, Reeves, Ward and 2 more | 113 min |
Nearby
Mesoscale Discussions in Oklahoma, 2014Mesoscale Discussions in Texas, 2014Every mesoscale discussion in 2014
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.