Alert archive / Wyoming / Tornado Watches in 2006

Tornado Watch 480

June 14, 20065 counties in Wyoming

The Storm Prediction Center issued this tornado watch at Jun 14, 2006, 11:05 AM MDT for 5 counties in Wyoming. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 14, 2006, 11:05 AM MDT (17:05 UTC)
Expired
Jun 14, 2006, 5:21 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt

Counties Big Horn County, WY, Hot Springs County, WY, Park County, WY, Sheridan County, WY, Washakie County, WY

The radar

The Riverton/Lander radar (KRIW), 151 km from the middle of the area, began a volume at 17:07 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 14, 11:19 AM MDTSevere Thunderstorm WarningRIWPark26 min
Jun 14, 11:28 AM MDTSevere Thunderstorm WarningRIWPark47 min
Jun 14, 12:10 PM MDTSevere Thunderstorm WarningRIWPark31 min
Jun 14, 12:25 PM MDTTornado WarningRIWBig Horn, Park50 min
Jun 14, 12:59 PM MDTSevere Thunderstorm WarningRIWBig Horn46 min
Jun 14, 1:09 PM MDTTornado WarningRIWBig Horn51 min
Jun 14, 1:11 PM MDTSevere Thunderstorm WarningRIWBig Horn32 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

Riverton, WY (KRIW), launched 12:00Z, 5.1 hours before the alert went out and 153 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.

Skew-T log-pSkew-T log-p diagram, Riverton, WY at 12:00Z on 2006-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2006-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2802 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
310 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 14, 10:36 AM MDTMesoscale DiscussionSPCBig Horn, Hot Springs, Johnson, Sheridan, Washakie84 min
Jun 14, 3:08 PM MDTMesoscale DiscussionSPCBig Horn, Sheridan67 min

Nearby

Tornado Watches in Wyoming, 2006Every tornado watch in 2006

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.