Alert archive / Wyoming / Winter Storm Watches in 2019

Winter Storm Watch 13, NWS Cheyenne, WY

May 26, 2019Albany County, Carbon County, Wyoming

NWS Cheyenne, WY issued this winter storm watch at May 26, 2019, 1:50 PM MDT for Albany County, Carbon County, Wyoming. It took effect at May 27, 2019, 6:00 PM MDT. It was in force for .

The area

The counties it named.

The facts

Issued
May 26, 2019, 1:50 PM MDT (19:50 UTC)
In effect from
May 27, 2019, 6:00 PM MDT
Expired
May 27, 2019, 2:49 AM MDT
In force
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 19:53 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 12:00Z, 7.8 hours before the alert went out and 329 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2019-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2019-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1575 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm 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 winter storm watch went out at May 26, 11:39 AM MDT, 2 hours 11 minutes earlier.

Area forecast discussion, May 26, 11:39 AM MDT, 2 hours 11 minutes before
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Hazardous weather outlook, May 26, 5:33 AM MDT, 8 hours 17 minutes before
Hazardous Weather Outlook
National Weather Service Cheyenne WY
533 AM MDT Sun May 26 2019

WYZ103>106-109>117-271145-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte 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-
533 AM MDT Sun May 26 2019

This hazardous weather outlook is for portions of south central
Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

A few strong thunderstorms may develop this afternoon and
evening. The possibility for severe thunderstorms exists mainly
along and east of Interstate 25.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Heavy rain amounts are expected Monday and Tuesday, mainly along
and east of the Laramie Range. Looking for additional heavy
accumulating snow for the Snowy and Sierra Madre Ranges.

.Spotter information statement...

Spotter activation will not be needed.

NEZ002-095-WYZ101-102-107-271145-
Dawes-North Sioux-Converse County Lower Elevations-
Niobrara County-East Platte County-
533 AM MDT Sun May 26 2019

This hazardous weather outlook is for portions of western
Nebraska...east central Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Thunderstorms are expected this afternoon and evening with
isolated severe thunderstorms. Main threats from the severe
thunderstorms will be damaging winds and large hail.

A Flood Advisory continues until 900 PM Monday for the White River
in north central Dawes County in the northern Nebraska Panhandle.

A Flood Watch is in effect from Sunday night through Tuesday
afternoon. Scattered thunderstorms will develop, with some storms
possibly producing locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

The Flood Watch continues into Tuesday as heavy rainfall
continues to impact the area.

.Spotter information statement...

Spotter activation will not be needed.

NEZ003-019>021-054-055-096-WYZ108-118-119-271145-
Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne-
South Sioux-Goshen County-Central Laramie County-
East Laramie County-
533 AM MDT Sun May 26 2019

This hazardous weather outlook is for portions of western
Nebraska and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Strong to severe thunderstorms are possible this afternoon and
evening through around midnight. Threats include large hail,
damaging winds, heavy rainfall and a few tornadoes. The main
threat will be along and south of a Cheyenne-Scottsbluff-Alliance
line.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Severe thunderstorms and heavy rain are expected Monday, with the
threat of heavy rain continuing into Tuesday. Monday's severe
thunderstorms will carry the threat of damaging winds, large hail
and heavy rainfall.

.Spotter information statement...

Spotter activation may be needed along and south of a Cheyenne-
Scottsbluff-Alliance line after 3 PM today through midnight.

In the hours before

Local storm report, May 26, 8:44 AM MDT, 5 hours 6 minutes before
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Local storm report, May 26, 8:57 AM MDT, 4 hours 53 minutes before
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Local storm report, May 26, 9:33 AM MDT, 4 hours 17 minutes before
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Local storm report, May 26, 11:41 AM MDT, 2 hours 9 minutes before
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Special weather statement, May 26, 1:34 PM MDT, 16 minutes before
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Special weather statement, May 26, 1:36 PM MDT, 14 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
136 PM MDT Sun May 26 2019

WYZ103-106-107-262015-
East Platte County WY-
Central Laramie Range and Southwest Platte County WY-
North Laramie Range WY-
136 PM MDT Sun May 26 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ALBANY...
NORTHWESTERN PLATTE AND SOUTHERN CONVERSE COUNTIES UNTIL 215 PM
MDT...

At 135 PM MDT, Doppler radar was tracking a strong thunderstorm 8
miles west of Westview Circle, or 14 miles west of Wheatland, moving
north at 25 mph.

Penny size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Harris Park around 215 PM MDT.

LAT...LON 4197 10520 4197 10531 4243 10548 4243 10506
TIME...MOT...LOC 1935Z 179DEG 21KT 4208 10524

Rubin

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 12:12 AM MDTSpecial Weather StatementCYSLaramie48 min
May 26, 12:53 AM MDTSpecial Weather StatementCYSLaramie37 min
May 26, 1:52 AM MDTSpecial Weather StatementCYSLaramie38 min
May 26, 2:01 AM MDTSevere Thunderstorm WarningCYSLaramie44 min
May 26, 2:43 AM MDTSevere Thunderstorm WarningCYSLaramie47 min
May 26, 1:34 PM MDTSpecial Weather StatementCYSConverse41 min
May 26, 1:36 PM MDTSpecial Weather StatementCYSPlatte39 min
May 26, 1:47 PM MDTFlash Flood WatchCYSGoshen, Laramie, Platte52 hr
May 26, 2:07 PM MDTSpecial Weather StatementCYSConverse38 min
May 26, 2:12 PM MDTSpecial Weather StatementCYSPlatte48 min
May 26, 2:44 PM MDTSpecial Weather StatementCYSNiobrara46 min
May 26, 2:55 PM MDTSpecial Weather StatementCYSPlatte50 min
May 26, 3:04 PM MDTSevere Thunderstorm WarningCYSPlatte38 min
May 26, 3:41 PM MDTSevere Thunderstorm WarningCYSGoshen, Platte64 min
May 26, 4:12 PM MDTSpecial Weather StatementCYSLaramie48 min
May 26, 4:18 PM MDTSevere Thunderstorm WarningCYSGoshen, Platte27 min
May 26, 4:19 PM MDTAreal Flood AdvisoryCYSPlatte3 hr
May 26, 4:41 PM MDTFlash Flood WarningCYSPlatte5 hr
May 26, 4:42 PM MDTSevere Thunderstorm WarningCYSPlatte48 min
May 26, 5:12 PM MDTSevere Thunderstorm WarningCYSLaramie33 min
May 26, 5:15 PM MDTSevere Thunderstorm WarningCYSGoshen, Platte45 min
May 26, 5:29 PM MDTSevere Thunderstorm WarningCYSPlatte46 min
May 26, 5:35 PM MDTSevere Thunderstorm WarningCYSLaramie40 min
May 26, 5:49 PM MDTSevere Thunderstorm WarningCYSPlatte41 min
May 26, 5:56 PM MDTSevere Thunderstorm WarningCYSLaramie34 min
May 26, 1:10 AM MDTSpecial Weather StatementCYSKimball50 min
May 26, 3:25 AM MDTSevere Thunderstorm WarningCYSBanner, Kimball50 min

Nearby

Winter Storm Watches in Wyoming, 2019Every winter storm watch in 2019

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.