Alert archive / Wyoming / Flash Flood Warnings in 2016
Flash Flood Warning 4, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Jun 12, 2016, 6:01 PM MDT for Laramie County, Wyoming. It was in force for 3 hr. 5 reports 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
- Jun 12, 2016, 6:01 PM MDT (00:01 UTC)
- Expired
- Jun 12, 2016, 9:00 PM MDT
- In force
- 3 hr
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Flood severity
- None
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 7 km from the middle of the area, began a volume at 00:00 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 12, 6:16 PM MDT | FLASH FLOOD | E Cheyenne, WY | STREETS FLOODED EAST SIDE OF TOWN. OFF EAST PERSHING. |
| Jun 12, 6:32 PM MDT | FLASH FLOOD | 2 Ne Cheyenne, WY | GARBAGE CANS MOVING DOWN STREET DUE TO FLOODING. REPORT RECEIVED VIA FACEBOOK. BUFFALO RIDGE AREA. |
| Jun 12, 6:36 PM MDT | FLASH FLOOD | Cheyenne, WY | 2-3 FEET OF WATER IN DOWNTOWN CHEYENNE. |
| Jun 12, 7:07 PM MDT | FLASH FLOOD | Cheyenne, WY | PICTURES OF LINCOLN WAY IN CHEYENNE. LINCOLN UNDER A FOOT OF WATER OR MORE. RECEIVED VIA FACEBOOK. |
| Jun 12, 7:07 PM MDT | FLASH FLOOD | Cheyenne, WY | PICTURES OF LINCOLN WAY IN CHEYENNE. LINCOLN WAY UNDER A FOOT OF WATER OR MORE. RECEIVED VIA FACEBOOK. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 0.0 hours before the alert went out and 194 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
- 322 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 2628 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted.
069
WGUS55 KCYS 130001
FFWCYS
WYC021-130300-
/O.NEW.KCYS.FF.W.0004.160613T0001Z-160613T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
601 PM MDT SUN JUN 12 2016
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL LARAMIE COUNTY IN SOUTHEASTERN WYOMING...
* UNTIL 900 PM MDT
* AT 601 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CHEYENNE...RANCHETTES...NORTH CHEYENNE...FRONTIER PARK...WARREN AF
BASE...SOUTH GREELEY...WARREN AFB...FOX FARM-COLLEGE AND SOUTH GREELEY
HIGH.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 6 AND 18.
INTERSTATE 80 IN WYOMING BETWEEN MILE MARKERS 355 AND 373.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.
&&
LAT...LON 4127 10458 4108 10462 4107 10495 4124 10497
$$
CLAYCOMB1 follow-up statement
931 WGUS75 KCYS 130052 FFSCYS FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 652 PM MDT SUN JUN 12 2016 WYC021-130101- /O.CAN.KCYS.FF.W.0004.000000T0000Z-160613T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LARAMIE WY- 652 PM MDT SUN JUN 12 2016 ...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL LARAMIE COUNTY IS CANCELLED... THE ORIGINAL FLASH FLOOD WARNING WAS REPLACED WITH A MORE WIDESPREAD FLASH FLOOD WARNING TO CAPTURE PORTIONS OF LARAMIE COUNTY FURTHER SOUTH AND EAST OF CHEYENNE. LAT...LON 4127 10458 4108 10462 4107 10495 4124 10497 $$ CLAYCOMB
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 6:50 PM MDT | Flash Flood Warning | CYS | Laramie | 3 hr |
| Jun 12, 7:38 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 37 min |
| Jun 12, 7:59 PM MDT | Flash Flood Warning | CYS | Laramie | 9 hr |
| Jun 12, 8:11 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 49 min |
| Jun 13, 10:21 AM MDT | Flash Flood Watch | CYS | Goshen, Laramie | 10 hr |
| Jun 13, 12:21 PM MDT | Special Weather Statement | CYS | Converse | 39 min |
| Jun 13, 12:37 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 38 min |
| Jun 13, 1:19 PM MDT | Special Weather Statement | CYS | Platte | 41 min |
| Jun 13, 1:28 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 47 min |
| Jun 13, 2:10 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 30 min |
| Jun 13, 5:50 PM MDT | Special Weather Statement | CYS | Converse | 40 min |
Nearby
Flash Flood Warnings in Wyoming, 2016Every flash flood warning in 2016
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.