Alert archive / Oklahoma / Mesoscale Discussions in 2007
Mesoscale Discussion 2201
The Storm Prediction Center issued this mesoscale discussion at Dec 10, 2007, 6:23 AM CST for 23 counties in Oklahoma; 16 counties in Texas. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 10, 2007, 6:23 AM CST (12:23 UTC)
- Expired
- Dec 10, 2007, 10:30 AM CST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, McClain County, OK, Oklahoma County, OK, Payne County, OK, Pottawatomie County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Baylor County, TX, Childress County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Foard County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Kent County, TX, King County, TX, Knox County, TX, Motley County, TX, Stonewall County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 28 km from the middle of the area, began a volume at 12:23 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
Fort Sill, OK (KFSI), launched 12:00Z, 0.4 hours before the alert went out and 55 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 723 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 302 m²/s²
- 0-3 km storm-relative helicity
- 402 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 101224 SWOMCD SPC MCD 101223 OKZ000-TXZ000-101630- MESOSCALE DISCUSSION 2201 NWS STORM PREDICTION CENTER NORMAN OK 0623 AM CST MON DEC 10 2007 AREAS AFFECTED...NW TX/SW AND CNTRL OK CONCERNING...FREEZING RAIN VALID 101223Z - 101630Z AREAS OF FREEZING RAIN WILL LIKELY CONTINUE THROUGH LATE THIS MORNING ACROSS NORTHWEST TX...SOUTHWEST OKLAHOMA AND CNTRL OKLAHOMA. A FEW SPOTS MAY RECEIVE UP TO .05 INCHES OF ICE ACCUMULATION. LATEST RADAR IMAGERY AND LIGHTNING DATA CURRENTLY SHOW AND AREA OF THUNDERSTORMS DEVELOPING AND INCREASING IN COVERAGE ACROSS NORTHWEST TX. THIS CONVECTION IS LOCATED IN A POCKET OF ELEVATED INSTABILITY SAMPLED BY THE MAF 12Z SOUNDING WITH MUCAPE VALUES SLIGHTLY ABOVE 500 J/KG. THE INSTABILITY AND WARM ADVECTION OVER THE TOP OF A SUB-FREEZING SFC LAYER WILL LIKELY SUSTAIN THE THUNDERSTORM ACTIVITY THROUGH LATE THIS MORNING. THE CONVECTION SHOULD MOVE NEWD ALONG THE NWRN EDGE OF THE LOW-LEVEL JET INTO SOUTHWEST OK AND CNTRL OK WHERE WARM ADVECTION WILL LIKELY BE THE GREATEST. IN ADDITION...OBJECTIVE ANALYSIS SHOWS A SMALL 50 KT MID-LEVEL JET IN NW TX. THIS MAY BE AN INDICATION OF A SUBTLE SHORTWAVE FEATURE PASSING THROUGH THE FLOW WHICH COULD FURTHER ENHANCE THE CONVECTIVE POTENTIAL LATER THIS MORNING. ALTHOUGH THE THUNDERSTORM COVERAGE SHOULD REMAIN SCATTERED...A FEW LOCATIONS IN THE PATH OF THE STRONGER STORMS MAY RECEIVE UP TO .05 INCHES OF FREEZING RAIN. ..BROYLES.. 12/10/2007 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ...NOTICE... SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A SCHEDULED BASIS FROM DECEMBER 1 THROUGH FEBRUARY 28...FOUR TIMES A DAY...AROUND 00 UTC...06 UTC...12 UTC...AND 18 UTC FOR SIGNIFICANT SHORT RANGE WINTER WEATHER EVENTS. ATTN...WFO...TSA...OUN...SJT...LUB...AMA... 33059981 32950040 33240110 33500131 33890127 34310099 34780047 35409949 35779881 36149812 36329764 36379732 36289682 35889658 35249687 34849723 34199803 33769861 33319934
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 10, 12:08 AM CST | Mesoscale Discussion | SPC | Blaine, Caddo, Canadian, Cleveland, Comanche, Cotton and 38 more | 5 hr |
| Dec 10, 6:36 AM CST | Mesoscale Discussion | SPC | Craig, Delaware, Mayes, Ottawa | 5 hr |
| Dec 10, 12:08 PM CST | Mesoscale Discussion | SPC | Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 29 more | 4 hr |
| Dec 10, 12:14 PM CST | Mesoscale Discussion | SPC | Craig, Mayes, Ottawa, Rogers | 4 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2007Mesoscale Discussions in Texas, 2007Every mesoscale discussion in 2007
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.