Alert archive / Colorado / Mesoscale Discussions in 2012
Mesoscale Discussion 1097
The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2012, 7:43 PM MDT for 13 counties in Colorado; Cheyenne County, Kansas; 7 counties in Nebraska. It was in force for 32 min.
The area
The outline as issued.
The facts
- Issued
- Jun 7, 2012, 7:43 PM MDT (01:43 UTC)
- Expired
- Jun 7, 2012, 8:15 PM MDT
- In force
- 32 min
- Issued by
- the Storm Prediction Center
All 21 counties
Adams County, CO, Arapahoe County, CO, Cheyenne County, CO, Elbert County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, KS, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Keith County, NE, Kimball County, NE, Perkins County, NE
The radar
The Denver radar (KFTG), 113 km from the middle of the area, began a volume at 01:45 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
Denver, CO (KDNR), launched 00:00Z, 1.7 hours before the alert went out and 11 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
- 1009 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 2384 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
589
ACUS11 KWNS 080144
SWOMCD
SPC MCD 080143
NEZ000-KSZ000-COZ000-WYZ000-080215-
MESOSCALE DISCUSSION 1097
NWS STORM PREDICTION CENTER NORMAN OK
0843 PM CDT THU JUN 07 2012
AREAS AFFECTED...SERN WY/WRN NEB/NERN CO/FAR NWRN KS
CONCERNING...TORNADO WATCH 362...
VALID 080143Z - 080215Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 362 CONTINUES.
SUMMARY...THE SEVERE WEATHER THREAT IS EXPECTED TO CONTINUE BEYOND
02Z WHICH IS THE SCHEDULED EXPIRATION TIME FOR WW 362. IN
ADDITION...THE SEVERE WEATHER THREAT SHOULD SPREAD EWD SOME INTO
SWRN NEB AND POSSIBLY FAR NWRN KS. THUS...COORDINATION WILL OCCUR
SOON WITH AFFECTED WFO/S IN THIS REGION.
DISCUSSION...OBJECTIVE ANALYSES INDICATED THE AIR MASS OVER NERN CO
INTO NWRN KS AND SWRN NEB REMAINS MODERATELY-STRONGLY UNSTABLE. THIS
COMBINED WITH A 30 KT SLY LOW LEVEL JET BENEATH 35 KT WLY MIDLEVEL
WINDS MAINTAINING STRONG EFFECTIVE BULK SHEAR WILL CONTINUE TO
SUPPORT ADDITIONAL ORGANIZED STORMS INCLUDING SUPERCELLS. EFFECTIVE
SRH HAS INCREASED TO 200-300 M2/S2 AS EXPECTED AND WILL SUPPORT A
CONTINUED POTENTIAL FOR ROTATING STORMS...ESPECIALLY OVER NERN CO.
WEAKER LOW LEVEL MOISTURE WITH EWD EXTENT INTO SWRN NEB AND NWRN KS
HAVE RESULTED IN HIGHER LCLS /ABOVE 2000 M/ AS COMPARED TO LOCATIONS
FARTHER W. OTHERWISE...LARGE HAIL AND DAMAGING WINDS WILL REMAIN
THREATS AS WELL THROUGH THE EVENING.
MODELS SUGGEST STORMS MAY EVOLVE INTO AN MCS MOVING ESEWD THROUGH
SWRN NEB AND MUCH OF NERN-EAST CENTRAL CO.
..PETERS.. 06/08/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LBF...GLD...PUB...BOU...CYS...
LAT...LON 38600399 39160448 40470450 41170469 41510386 41560236
41360136 40280157 38470190 38500300 38600399Nearby
Mesoscale Discussions in Colorado, 2012Mesoscale Discussions in Nebraska, 2012Mesoscale Discussions in Kansas, 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.