Alert archive / Wyoming / Flash Flood Warnings in 2005

Flash Flood Warning 1, NWS Rapid City, SD

June 24, 2005Campbell County, Wyoming

NWS Rapid City, SD issued this flash flood warning at Jun 24, 2005, 6:41 PM MDT for Campbell County, Wyoming. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 24, 2005, 6:41 PM MDT (00:41 UTC)
Expired: Jun 24, 2005, 9:45 PM MDT
In force: 3 hr
Issued by: NWS Rapid City, SD
Area: Counties, with a storm outline in the text

County Campbell County, WY

The radar

The Rapid City radar (KUDX), 217 km from the middle of the area, began a volume at 00:44 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

Rapid City, SD (KUNR), launched 00:00Z, 0.7 hours before the alert went out and 214 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1148 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1283 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 6.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Rapid City, SD wrote its last area forecast discussion before this flash flood warning went out at Jun 24, 5:45 PM MDT, 56 minutes earlier.

Area forecast discussion, Jun 24, 5:45 PM MDT, 56 minutes before

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Hazardous weather outlook, Jun 24, 6:51 AM MDT, 11 hours 50 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
651 AM MDT FRI JUN 24 2005

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-251300-
BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON-
HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK-
NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS-
NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY-
SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS-
SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP-
WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH-
651 AM MDT (751 AM CDT) FRI JUN 24 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND
NORTHEASTERN WYOMING.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING ACROSS NORTHEAST WYOMING...THE BLACK HILLS AREA...AND
SOUTHERN SOUTH DAKOTA. THE PRIMARY THREATS FROM ANY SEVERE STORMS
WILL BE LARGE HAIL AND WIND GUSTS EXCEEDING 60 MPH.

A FRONTAL BOUNDARY...ACROSS NORTHERN NEBRASKA AND CENTRAL WYOMING
THIS MORNING...WILL SLOWLY LIFT NORTHWARD INTO NORTHEAST
WYOMING AND SOUTHERN SOUTH DAKOTA THIS AFTERNOON. AN UPPER LEVEL
DISTURBANCE WILL MOVE INTO THE REGION THIS AFTERNOON. THE COMBINATION
OF THE TWO FEATURES WILL HELP TO TRIGGER STORMS ACROSS NORTHEAST
WYOMING AND THE BLACK HILLS EARLY THIS AFTERNOON...AND ACROSS PARTS
OF SOUTHERN SOUTH DAKOTA BY EVENING WIND SHEAR AND INSTABILITY WILL
BE SUFFICIENT FOR SEVERE THUNDERSTORMS TO DEVELOP ACROSS THESE
AREAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

AS THE FRONTAL BOUNDARY REMAINS NEARLY STATIONARY ACROSS THE AREA
THIS WEEKEND...THERE WILL BE A SLIGHT RISK FOR SEVERE THUNDERSTORMS
ACROSS NORTHEAST WYOMING AND WESTERN SOUTH DAKOTA ON SATURDAY AND
SUNDAY. THE MAIN THREATS AGAIN WILL BE LARGE HAIL AND STRONG WIND
GUSTS.

CONTINUED CHANCES FOR THUNDERSTORMS CAN BE EXPECTED THROUGH THE
FIRST PART OF NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY.

In the hours before

Local storm report, Jun 24, 4:15 PM MDT, 2 hours 26 minutes before

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Local storm report, Jun 24, 4:39 PM MDT, 2 hours 2 minutes before

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Local storm report, Jun 24, 6:09 PM MDT, 32 minutes before

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The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 24, 6:49 PM MDT	Severe Thunderstorm Warning	UNR	Fall River	72 min
Jun 24, 7:40 PM MDT	Severe Thunderstorm Warning	UNR		65 min
Jun 24, 8:43 PM MDT	Severe Thunderstorm Warning	UNR		77 min
Jun 24, 8:55 PM MDT	Severe Thunderstorm Warning	UNR		61 min
Jun 24, 6:25 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	65 min
Jun 24, 7:00 PM MDT	Severe Thunderstorm Warning	UNR	Crook	44 min
Jun 25, 4:56 PM MDT	Severe Thunderstorm Warning	UNR	Campbell	31 min

Nearby

Flash Flood Warnings in Wyoming, 2005 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.