Alert archive / Wyoming / Winter Storm Warnings in 2016

Winter Storm Warning 13, NWS Cheyenne, WY

May 8, 2016Albany County, Carbon County, Wyoming

NWS Cheyenne, WY issued this winter storm warning at May 8, 2016, 10:38 AM MDT for Albany County, Carbon County, Wyoming. It was in force for 8 hr. 12 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 8, 2016, 10:38 AM MDT (16:38 UTC)
Expired: May 8, 2016, 6:58 PM MDT
In force: 8 hr
Issued by: NWS Cheyenne, WY

Counties Albany County, WY, Carbon County, WY

The radar

The Cheyenne radar (KCYS), 140 km from the middle of the area, began a volume at 16:37 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 8, 1:56 PM MDT	SNOW 6.4	24 W Saratoga, WY	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.
May 8, 1:56 PM MDT	SNOW 7	6 Sw Centennial, WY	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.
May 8, 1:56 PM MDT	SNOW 7	8 Wsw Encampment, WY	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.
May 8, 1:56 PM MDT	SNOW 8	11 Sse Encampment, WY	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.
May 8, 1:56 PM MDT	SNOW 8	20 Wnw Encampment, WY	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.
May 8, 1:56 PM MDT	SNOW 9.6	10 Sw Encampment, WY	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.
May 8, 1:56 PM MDT	SNOW 9.6	16 Ene Savery, WY	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.
May 8, 1:56 PM MDT	SNOW 12	28 E Savery, WY	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.
May 8, 1:56 PM MDT	HEAVY SNOW 13	10 Ssw Arlington, WY	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.
May 8, 1:56 PM MDT	HEAVY SNOW 15	10 Wsw Encampment, WY	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.
May 8, 1:56 PM MDT	HEAVY SNOW 18	12 W Centennial, WY	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.
May 8, 1:56 PM MDT	HEAVY SNOW 20	21 Sse Elk Mountain, WY	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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 4.6 hours before the alert went out and 230 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 742 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 231 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

532 
WWUS45 KCYS 081638
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
1038 AM MDT SUN MAY 8 2016

...ACCUMULATING SNOW WILL CONTINUE OVER THE SNOWY AND SIERRA
MADRE MOUNTAIN RANGES THROUGH THIS EVENING...

WYZ112-114-090300-
/O.UPG.KCYS.WW.Y.0026.000000T0000Z-160508T1800Z/
/O.NEW.KCYS.WS.W.0013.160508T1638Z-160509T0300Z/
SIERRA MADRE RANGE-SNOWY RANGE-
INCLUDING THE CITIES OF...CENTENNIAL...ALBANY
1038 AM MDT SUN MAY 8 2016

...WINTER STORM WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WINTER
STORM WARNING FOR SNOW...WHICH IS IN EFFECT UNTIL 9 PM MDT THIS
EVENING. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH THIS MORNING.

* TOTAL SNOW ACCUMULATIONS...12 TO 18 INCHES...HEAVIEST ABOVE
  10000 FEET.

* VISIBILITIES...AS LOW AS ONE HALF MILE AT TIMES.

* IMPACTS...MAINLY TRAVEL DIFFICULTIES DUE TO LOW VISIBILITIES 
  AND SLICK AND SNOWPACKED ROADS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

HAHN

1 follow-up statement

420 
WWUS45 KCYS 090058
WSWCYS

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
658 PM MDT SUN MAY 8 2016

...WINTER STORM WARNING IS CANCELLED FOR SNOWY AND SIERRA MADRE
RANGES...

WYZ112-114-090200-
/O.CAN.KCYS.WS.W.0013.000000T0000Z-160509T0300Z/
SIERRA MADRE RANGE-SNOWY RANGE-
INCLUDING THE CITIES OF...CENTENNIAL...ALBANY
658 PM MDT SUN MAY 8 2016

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE WINTER
STORM WARNING FOR THE SNOWY AND SIERRA MADRE RANGES.

SNOWFALL HAS DECREASED IN COVERAGE AND INTENSITY...WITH OCCASIONAL
LIGHT SNOW SHOWERS CONTINUING TONIGHT. ADDITIONAL ACCUMULATIONS
OF AN INCH OR TWO ARE EXPECTED.

$$

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 8, 9:06 AM MDT	Areal Flood Warning	CYS	Platte	9 hr
May 8, 12:03 PM MDT	River Flood Warning	CYS	Goshen	25 days
May 8, 5:01 PM MDT	Special Weather Statement	CYS	Laramie	29 min
May 8, 5:24 PM MDT	Special Weather Statement	CYS	Goshen	51 min

Nearby

Winter Storm Warnings in Wyoming, 2016 Every winter storm 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.