Alert archive / Wyoming / Flash Flood Watches in 2015
Flash Flood Watch 5, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood watch at Jun 15, 2015, 2:31 AM MDT for 4 counties in Wyoming. It took effect at Jun 15, 2015, 4:00 PM MDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Jun 15, 2015, 2:31 AM MDT (08:31 UTC)
- In effect from
- Jun 15, 2015, 4:00 PM MDT
- Expired
- Jun 16, 2015, 2:03 AM MDT
- In force
- 10 hr
- Issued by
- NWS Cheyenne, WY
- Flood severity
- None
Counties Albany County, WY, Converse County, WY, Niobrara County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 148 km from the middle of the area, began a volume at 08:31 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
Denver, CO (KDEN), launched 00:00Z, 8.5 hours before the alert went out and 330 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3201 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this flash flood watch went out at Jun 15, 2:23 AM MDT, 8 minutes earlier.
Area forecast discussion, Jun 15, 2:23 AM MDT, 8 minutes before
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</html>Hazardous weather outlook, Jun 14, 3:06 PM MDT, 11 hours 25 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 306 PM MDT SUN JUN 14 2015 NEZ002-003-019>021-054-055-095-096-152115- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 306 PM MDT SUN JUN 14 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN NEBRASKA. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THROUGH THE EARLY NIGHT. SEVERE STORMS ARE NOT EXPECTED...HOWEVER SMALL HAIL COULD OCCUR WITH THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ISOLATED THUNDERSTORMS WILL BE POSSIBLE ON MONDAY AFTERNOON AND EVENING. MORE WIDESPREAD THUNDERSTORMS ARE POSSIBLE ON TUESDAY AFTERNOON AND EVENING AND SOME OF THE STORMS COULD BE SEVERE WITH LARGE HAIL AND DAMAGING WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE REQUIRED THROUGH TONIGHT. WYZ101>119-152115- CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY- NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY- SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE- LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY- 306 PM MDT SUN JUN 14 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THROUGH THE EARLY NIGHT. SEVERE STORMS ARE NOT EXPECTED...HOWEVER SMALL HAIL COULD OCCUR WITH THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SCATTERED THUNDERSTORMS CAN BE EXPECTED ON MOST AFTERNOONS AND EVENINGS. SOME STRONGER STORMS WITH SMALL HAIL WILL BE POSSIBLE ALONG AND WEST OF THE LARAMIE RANGE ON MONDAY. THERE COULD BE A FEW SEVERE STORMS TO THE EAST OF THE LARAMIE RANGE ON TUESDAY WITH THE PRIMARY THREATS BEING LARGE HAIL AND DAMAGING WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE REQUIRED THROUGH TONIGHT.
In the hours before
Special weather statement, Jun 14, 8:50 PM MDT, 5 hours 41 minutes before
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</html>Local storm report, Jun 14, 9:19 PM MDT, 5 hours 12 minutes before
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</html>The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 6:29 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 46 min |
| Jun 14, 6:31 PM MDT | Special Weather Statement | CYS | Niobrara | 44 min |
| Jun 14, 7:02 PM MDT | Special Weather Statement | CYS | Laramie | 28 min |
| Jun 14, 7:04 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 26 min |
| Jun 14, 7:26 PM MDT | Special Weather Statement | CYS | Laramie | 49 min |
| Jun 14, 7:50 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 25 min |
| Jun 14, 8:22 PM MDT | Special Weather Statement | CYS | Laramie | 23 min |
| Jun 14, 8:36 PM MDT | Areal Flood Advisory | CYS | Laramie | 4 hr |
| Jun 14, 10:03 PM MDT | Areal Flood Advisory | CYS | Laramie | 3 hr |
| Jun 15, 1:43 PM MDT | Special Weather Statement | CYS | Carbon | 47 min |
| Jun 15, 2:24 PM MDT | Special Weather Statement | CYS | 51 min | |
| Jun 15, 2:26 PM MDT | Special Weather Statement | CYS | Carbon | 49 min |
| Jun 15, 2:46 PM MDT | Severe Thunderstorm Warning | CYS | Carbon | 33 min |
| Jun 15, 3:18 PM MDT | Special Weather Statement | CYS | Albany | 42 min |
| Jun 15, 4:02 PM MDT | Tornado Warning | CYS | Carbon | 28 min |
| Jun 15, 4:11 PM MDT | Special Weather Statement | CYS | Albany | 34 min |
| Jun 15, 4:33 PM MDT | Special Weather Statement | CYS | Platte | 42 min |
| Jun 15, 4:53 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 37 min |
| Jun 14, 8:50 PM MDT | Special Weather Statement | CYS | Banner, Kimball | 40 min |
Nearby
Flash Flood Watches in Wyoming, 2015Every flash flood watch in 2015
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.