Alert archive / Wyoming / Flash Flood Warnings in 2005

Flash Flood Warning 2, NWS Cheyenne, WY

August 3, 2005Goshen County, Wyoming

NWS Cheyenne, WY issued this flash flood warning at Aug 3, 2005, 8:44 PM MDT for Goshen County, Wyoming. It was in force for 2 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 3, 2005, 8:44 PM MDT (02:44 UTC)
Expired
Aug 3, 2005, 10:45 PM MDT
In force
2 hr
Issued by
NWS Cheyenne, WY
Area
Counties, with a storm outline in the text

County Goshen County, WY

The radar

The Cheyenne radar (KCYS), 106 km from the middle of the area, began a volume at 02:46 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 was reported inside it

TimeReportWhereRemark
Aug 3, 9:45 PM MDTFLASH FLOODYoder, WYMANY STREETS UNDER SEVERAL INCHES OF WATER

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Rapid City, SD (KUNR), launched 00:00Z, 2.7 hours before the alert went out and 254 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, Rapid City, SD at 00:00Z on 2005-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 00:00Z on 2005-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -59 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
4 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
696 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-59 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KCYS 040247
FFWCYS
WYC015-040445-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
844 PM MDT WED AUG 3 2005

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GOSHEN COUNTY IN SOUTHEAST WYOMING
  THIS INCLUDES THE CITY OF TORRINGTON

* UNTIL 1045 PM MDT

* AT 840 PM MDT...THE PUBLIC REPORTED FLASH FLOODING FROM A          
  THUNDERSTORM OVER THE WARNED AREA. LOCALIZED FLOODING OF           
  ROADWAYS AND SMALL STREAMS HAS ALREADY OCCURRED IN WEST            
  CENTRAL GOSHEN COUNTY. ADDITIONAL FLOODING IS POSSIBLE AS          
  RAIN CONTINUES THROUGH 1045 PM.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GLOMILL
  RESERVOIR...FORT LARAMIE NATIONAL HISTORIC SITE...PACKER LAKE...
  YODER...VETERAN...LINGLE AND FORT LARAMIE.

LAT...LON 4233 10406 4233 10465 4157 10464 4158 10406

$$

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 3, 6:48 PM MDTSevere Thunderstorm WarningCYSConverse39 min
Aug 3, 10:44 PM MDTFlash Flood WarningCYSGoshen3 hr

Nearby

Flash Flood Warnings in Wyoming, 2005Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.