Alert archive / Wyoming / Flash Flood Warnings in 2016
Flash Flood Warning 1, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at May 6, 2016, 7:22 PM MDT for Platte County, Wyoming. It was in force for 113 min. 2 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
- May 6, 2016, 7:22 PM MDT (01:22 UTC)
- Expired
- May 6, 2016, 9:15 PM MDT
- In force
- 113 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Flood severity
- None
County Platte County, WY
The radar
The Cheyenne radar (KCYS), 81 km from the middle of the area, began a volume at 01:24 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 |
|---|---|---|---|
| May 6, 7:40 PM MDT | FLASH FLOOD | 5 N Chugwater, WY | CHUGWATER CREEK OVERFLOWING ITS BANKS SLATER SOUTH TO NORTH OF CHUGWATER RESULTING IN FLASH FLOODING. RADAR RAINFALL RATES OF 1-2 INCHES/HOUR. |
| May 6, 7:41 PM MDT | FLASH FLOOD | 9 N Chugwater, WY | REPORTS FLASH FLOODING IN AND ALONG CHUGWATER CREEK. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.4 hours before the alert went out and 260 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
- 295 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 2727 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted.
434
WGUS55 KCYS 070122
FFWCYS
WYC031-070315-
/O.NEW.KCYS.FF.W.0001.160507T0122Z-160507T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
722 PM MDT FRI MAY 6 2016
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN PLATTE COUNTY IN SOUTHEASTERN WYOMING...
* UNTIL 915 PM MDT
* AT 721 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CHUGWATER AND SLATER.
ADDITIONAL RAINFALL AMOUNTS OF ONE INCH PER HOUR ARE POSSIBLE IN THE
WARNED AREA.
THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 54 AND
71.
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.
&&
LAT...LON 4199 10471 4177 10467 4173 10489 4194 10498
$$
RUBIN2 follow-up statements
862 WGUS75 KCYS 070215 FFSCYS FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 815 PM MDT FRI MAY 6 2016 WYC031-070315- /O.CON.KCYS.FF.W.0001.000000T0000Z-160507T0315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PLATTE WY- 815 PM MDT FRI MAY 6 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM MDT FOR SOUTHEASTERN PLATTE COUNTY... AT 813 PM MDT...DOPPLER RADAR INDICATED LIGHT SHOWERS OVER THE FLASH FLOOD WARNING AREA. RAINFALL AMOUNTS WILL BE LESS THAN ONE QUARTER OF AN INCH. DOPPLER RADAR SHOWED THAT 3 TO 5 INCHES OF RAIN LIKELY FELL OVER THE AREA. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... CHUGWATER AND SLATER. THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 54 AND 71. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. && LAT...LON 4199 10471 4177 10467 4173 10489 4194 10498 $$ RUBIN
471 WGUS75 KCYS 070309 FFSCYS FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 909 PM MDT FRI MAY 6 2016 WYC031-070319- /O.EXP.KCYS.FF.W.0001.000000T0000Z-160507T0315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PLATTE WY- 909 PM MDT FRI MAY 6 2016 ...THE FLASH FLOOD WARNING FOR SOUTHEASTERN PLATTE COUNTY WILL EXPIRE AT 915 PM MDT... THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. LAT...LON 4199 10471 4177 10467 4173 10489 4194 10498 $$ RUBIN
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 6:17 PM MDT | Special Weather Statement | CYS | Platte | 43 min |
| May 6, 7:04 PM MDT | Areal Flood Advisory | CYS | Platte | 3 hr |
| May 6, 7:42 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 63 min |
| May 7, 12:29 AM MDT | Special Weather Statement | CYS | Goshen | 46 min |
| May 7, 1:25 AM MDT | Dense Fog Advisory | CYS | Albany, Carbon, Laramie | 14 hr |
| May 7, 11:20 AM MDT | Flash Flood Warning | CYS | Converse | 6 hr |
| May 7, 1:30 PM MDT | River Flood Warning | CYS | Goshen | 24 hr |
| May 7, 2:39 PM MDT | Winter Weather Advisory | CYS | Albany, Carbon | 20 hr |
| May 7, 3:09 PM MDT | River Flood Warning | CYS | Converse | 60 hr |
| May 7, 4:16 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 46 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.