Alert archive / Wyoming / Areal Flood Warnings in 2016
Areal Flood Warning 2, NWS Cheyenne, WY
NWS Cheyenne, WY issued this areal flood warning at May 8, 2016, 6:05 PM MDT for Platte County, Wyoming. It was in force for 12 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
- May 8, 2016, 6:05 PM MDT (00:05 UTC)
- Expired
- May 9, 2016, 6:00 AM MDT
- In force
- 12 hr
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Flood severity
- None
County Platte County, WY
The radar
The Cheyenne radar (KCYS), 110 km from the middle of the area, began a volume at 00:08 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
Riverton, WY (KRIW), launched 00:00Z, 0.1 hours before the alert went out and 300 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
- 930 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -105 m²/s²
- 0-3 km storm-relative helicity
- -48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood warning 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 areal flood warning went out at May 8, 5:44 PM MDT, 21 minutes earlier.
Area forecast discussion, May 8, 5:44 PM MDT, 21 minutes before
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</html>Hazardous weather outlook, May 8, 11:00 AM MDT, 7 hours 5 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1100 AM MDT SUN MAY 8 2016 WYZ104-105-109>115-091015- FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN- CENTRAL CARBON COUNTY-NORTH SNOWY RANGE FOOTHILLS- SOUTHWEST CARBON COUNTY-SIERRA MADRE RANGE- UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE-LARAMIE VALLEY- 1100 AM MDT SUN MAY 8 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT MOUNTAIN SNOW WILL CONTINUE THROUGH THE AFTERNOON HOURS. TOTAL SNOWFALL ACCUMULATIONS WILL RANGE FROM 12 TO 18 INCHES OVER THE SNOWY AND SIERRA MADRE RANGES. A WINTER STORM WARNING IS IN EFFECT FOR THIS AREA UNTIL 9 PM THIS EVENING. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS CAN BE EXPECTED ACROSS THE AREA THIS AFTERNOON AND EVENING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY UNSETTLED WEATHER IS EXPECTED TO PERSIST THROUGH MUCH OF NEXT WEEK WITH DAILY CHANCES FOR SHOWERS AND ISOLATED THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. NEZ002-003-019>021-054-055-095-096-WYZ101>103-106>108-118-119- 091015- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS- NIOBRARA COUNTY-NORTH LARAMIE RANGE- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL LARAMIE COUNTY- EAST LARAMIE COUNTY- 1100 AM MDT SUN MAY 8 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF PANHANDLE NEBRASKA...EAST CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS CAN BE EXPECTED ACROSS THE AREA TODAY. SEVERE WEATHER IS NOT EXPECTED. HOWEVER...NUMEROUS CREEKS AND STREAMS ARE RUNNING HIGH AND SATURATED GROUND MAY EXIST ACROSS MUCH OF THE AREA. ADDITIONAL RAINFALL COULD RESULT IN LOCAL FLASH FLOODING. A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 600 PM THIS EVENING FOR THE LARAMIE RANGE AND SOUTHEAST WYOMING PLAINS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY UNSETTLED WEATHER IS EXPECTED TO PERSIST THROUGH MUCH OF NEXT WEEK WITH DAILY CHANCES FOR SHOWERS AND ISOLATED THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. WYZ116-117-091015- SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- 1100 AM MDT SUN MAY 8 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT PERIODS OF SNOW WILL OCCUR EARLY THIS MORNING ALONG THE INTERSTATE 80 SUMMIT BETWEEN LARAMIE AND CHEYENNE. MOTORISTS CAN EXPECT SLICK AND SNOW COVERED ROADS AS WELL AS LOW VISIBILITIES. CONDITIONS ARE EXPECTED TO IMPROVE SHORTLY AFTER SUNRISE. NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS CAN BE EXPECTED ACROSS THE AREA TODAY. SEVERE WEATHER IS NOT EXPECTED. HOWEVER...NUMEROUS CREEKS AND STREAMS ARE RUNNING HIGH AND SATURATED GROUND MAY EXIST ACROSS MUCH OF THE AREA. ADDITIONAL RAINFALL COULD RESULT IN LOCAL FLASH FLOODING. A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 600 PM THIS EVENING FOR THE SOUTHERN LARAMIE RANGE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY UNSETTLED WEATHER IS EXPECTED TO PERSIST THROUGH MUCH OF NEXT WEEK WITH DAILY CHANCES FOR SHOWERS AND ISOLATED THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Local storm report, May 8, 2:07 PM MDT, 3 hours 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
207 PM MDT SUN MAY 08 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0156 PM SNOW 24 W SARATOGA 41.45N 107.28W
05/08/2016 E6.4 INCH CARBON WY PARK/FOREST SRVC
SAGE CREEK BASIN SNOTEL IN THE SIERRA MADRE RANGE.
ELEVATION 7850 FEET. SNOW WATER EQUIVALENT IS 0.8 INCHES
AND THE SNOW TO LIQUID RATIO USED WAS 8 TO 1.
ACCUMULATION WAS OVER PAST 24 HOURS.
0156 PM SNOW 20 WNW ENCAMPMENT 41.32N 107.15W
05/08/2016 E8.0 INCH CARBON WY PARK/FOREST SRVC
DIVIDE PEAK SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION
8880 FEET. SNOW WATER EQUIVALENT IS 1.0 INCHES AND THE
SNOW TO LIQUID RATIO USED WAS 8 TO 1. ACCUMULATION WAS
OVER PAST 24 HOURS.
0156 PM SNOW 16 ENE SAVERY 41.11N 107.17W
05/08/2016 E9.6 INCH CARBON WY PARK/FOREST SRVC
SANDSTONE RANGER STATION SNOTEL IN THE SIERRA MADRE
RANGE. ELEVATION 8150 FEET. SNOW WATER EQUIVALENT IS
1.2 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 8 TO 1.
ACCUMULATION WAS OVER PAST 24 HOURS.
0156 PM HEAVY SNOW 10 WSW ENCAMPMENT 41.15N 106.97W
05/08/2016 E15.0 INCH CARBON WY PARK/FOREST SRVC
OLD BATTLE SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION
10000 FEET. SNOW WATER EQUIVALENT IS 1.5 INCHES AND THE
SNOW TO LIQUID RATIO USED WAS 10 TO 1. ACCUMULATION WAS
OVER PAST 24 HOURS.
0156 PM SNOW 8 WSW ENCAMPMENT 41.16N 106.94W
05/08/2016 E7.0 INCH CARBON WY PARK/FOREST SRVC
WEBBER SPRINGS SNOTEL IN THE SIERRA MADRE RANGE.
ELEVATION 9250 FEET. SNOW WATER EQUIVALENT IS 0.9 INCHES
AND THE SNOW TO LIQUID RATIO USED WAS 8 TO 1.
ACCUMULATION WAS OVER PAST 24 HOURS.
0156 PM SNOW 10 SW ENCAMPMENT 41.11N 106.93W
05/08/2016 E9.6 INCH CARBON WY PARK/FOREST SRVC
LITTLE SNAKE RIVER SNOTEL IN THE SIERRA MADRE RANGE.
ELEVATION 8915 FEET. SNOW WATER EQUIVALENT IS 1.2 INCHES
AND THE SNOW TO LIQUID RATIO USED WAS 8 TO 1.
ACCUMULATION WAS OVER PAST 24 HOURS.
0156 PM SNOW 28 E SAVERY 41.02N 106.91W
05/08/2016 E12.0 INCH CARBON WY PARK/FOREST SRVC
WHISKEY PARK SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION
8950 FEET. SNOW WATER EQUIVALENT IS 1.5 INCHES AND THE
SNOW TO LIQUID RATIO USED WAS 8 TO 1. ACCUMULATION WAS
OVER PAST 24 HOURS.
0156 PM SNOW 11 SSE ENCAMPMENT 41.06N 106.71W
05/08/2016 E8.0 INCH CARBON WY PARK/FOREST SRVC
BLACKHALL MOUNTAIN SNOTEL IN THE SIERRA MADRE RANGE.
ELEVATION 9820 FEET. SNOW WATER EQUIVALENT IS 0.8 INCHES
AND THE SNOW TO LIQUID RATIO USED WAS 10 TO 1.
ACCUMULATION WAS OVER PAST 24 HOURS.
0156 PM HEAVY SNOW 12 W CENTENNIAL 41.30N 106.34W
05/08/2016 E18.0 INCH CARBON WY PARK/FOREST SRVC
NORTH FRENCH CREEK SNOTEL IN THE SNOWY RANGE. ELEVATION
10130 FEET. SNOW WATER EQUIVALENT IS 1.8 INCHES AND THE
SNOW TO LIQUID RATIO USED WAS 10 TO 1. ACCUMULATION WAS
OVER PAST 24 HOURS.
0156 PM HEAVY SNOW 10 SSW ARLINGTON 41.46N 106.28W
05/08/2016 E13.0 INCH CARBON WY PARK/FOREST SRVC
SAND LAKE SNOTEL IN THE SNOWY RANGE. ELEVATION 10050
FEET. SNOW WATER EQUIVALENT IS 1.3 INCHES AND THE SNOW
TO LIQUID RATIO USED WAS 10 TO 1. ACCUMULATION WAS OVER
PAST 24 HOURS.
0156 PM SNOW 6 SW CENTENNIAL 41.24N 106.19W
05/08/2016 E7.0 INCH ALBANY WY PARK/FOREST SRVC
CINNABAR PARK SNOTEL IN THE SNOWY RANGE. ELEVATION 9574
FEET. SNOW WATER EQUIVALENT IS 0.7 INCHES AND THE SNOW
TO LIQUID RATIO USED WAS 10 TO 1. ACCUMULATION WAS OVER
PAST 24 HOURS.
0156 PM HEAVY SNOW 21 SSE ELK MOUNTAIN 41.41N 106.26W
05/08/2016 E20.0 INCH CARBON WY PARK/FOREST SRVC
MEDICINE BOW SNOTEL IN THE SNOWY RANGE. ELEVATION 10500
FEET. SNOW WATER EQUIVALENT IS 2.0 INCHES AND THE SNOW
TO LIQUID RATIO USED WAS 10 TO 1. ACCUMULATION WAS OVER
PAST 24 HOURS.
&&
TTRUDELSpecial weather statement, May 8, 5:01 PM MDT, 1 hour 4 minutes before
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</html>Local storm report, May 8, 5:02 PM MDT, 1 hour 3 minutes before
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</html>Local storm report, May 8, 5:03 PM MDT, 1 hour 2 minutes before
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</html>Special weather statement, May 8, 5:24 PM MDT, 41 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 |
|---|---|---|---|---|
| May 9, 6:00 AM MDT | Areal Flood Warning | CYS | Platte | 37 hr |
| May 9, 4:50 PM MDT | Special Weather Statement | CYS | Laramie | 40 min |
| May 8, 6:38 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 52 min |
| May 8, 7:30 PM MDT | Special Weather Statement | CYS | Kimball | 45 min |
Nearby
Areal Flood Warnings in Wyoming, 2016Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.