Alert archive / Colorado / Tornado Watches in 2005
Tornado Watch 466
The Storm Prediction Center issued this tornado watch at Jun 12, 2005, 1:00 PM MDT for 10 counties in Colorado; 5 counties in Kansas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 12, 2005, 1:00 PM MDT (19:00 UTC)
- Expired
- Jun 12, 2005, 8:00 PM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
Counties Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Sherman County, KS, Wallace County, KS, Wichita County, KS
The radar
The Goodland radar (KGLD), 98 km from the middle of the area, began a volume at 19:00 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.
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 1:47 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 37 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 7.0 hours before the alert went out and 54 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
- 160 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 715 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 121859
SEL6
SPC WW 121859
COZ000-KSZ000-NEZ000-130200-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 466
NWS STORM PREDICTION CENTER NORMAN OK
100 PM MDT SUN JUN 12 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHEAST COLORADO
NORTHWEST KANSAS
EXTREME SOUTHWEST NEBRASKA
EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 100 PM UNTIL 800
PM MDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 65 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE MILES
EAST AND WEST OF A LINE FROM 55 MILES NORTH OF AKRON COLORADO TO
80 MILES SOUTH SOUTHWEST OF GOODLAND KANSAS. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU6).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 464...WW 465...
DISCUSSION...MOIST UPSLOPE FLOW IN EXIT REGION OF APPROACHING UPR
TROUGH/JET STREAK...ALONG WITH SURFACE HEATING...EXPECTED TO SUPPORT
CONTINUED TSTM DEVELOPMENT OVER THE CNTRL HI PLNS. BACKED LOW LEVEL
FLOW WILL ENHANCE THREAT FOR TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 55 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 22020.
...CORFIDI
405,1015 381,1010 381,1032 405,1042SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 12:43 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Bent, Cheyenne, Crowley, Elbert and 10 more | 92 min |
| Jun 12, 2:47 PM MDT | Mesoscale Discussion | SPC | Baca, Prowers | 88 min |
| Jun 12, 5:09 PM MDT | Mesoscale Discussion | SPC | Cheyenne, Kiowa, Kit Carson, Prowers | 96 min |
| Jun 11, 7:27 PM MDT | Mesoscale Discussion | SPC | Barber, Cowley, Harper, Sumner | 33 min |
| Jun 11, 9:11 PM MDT | Mesoscale Discussion | SPC | Barber, Comanche, Harper, Kingman | 64 min |
| Jun 12, 4:03 AM MDT | Mesoscale Discussion | SPC | Meade, Seward, Stevens | 2 hr |
| Jun 12, 11:38 AM MDT | Mesoscale Discussion | SPC | Butler, Chautauqua, Cowley, Elk, Greenwood, Labette and 3 more | 67 min |
| Jun 12, 12:20 PM MDT | Tornado Watch | SPC | Allen, Anderson, Atchison, Brown, Butler, Chase and 31 more | 9 hr |
| Jun 12, 2:02 PM MDT | Mesoscale Discussion | SPC | Bourbon, Cherokee, Crawford, Johnson, Linn, Miami | 58 min |
| Jun 12, 2:45 PM MDT | Severe Thunderstorm Watch | SPC | Bourbon, Cherokee, Crawford, Johnson, Leavenworth, Linn and 2 more | 7 hr |
| Jun 12, 5:13 PM MDT | Mesoscale Discussion | SPC | Cherokee | 2 hr |
Nearby
Tornado Watches in Colorado, 2005Tornado Watches in Kansas, 2005Every tornado watch in 2005
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.