Severe Thunderstorm Warning 25, NWS Cheyenne, WY

553 
WWUS55 KCYS 032155
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
355 PM MDT Wed Jun 3 2020

WYC021-032204-
/O.EXP.KCYS.SV.W.0025.000000T0000Z-200603T2200Z/
Laramie WY-
355 PM MDT Wed Jun 3 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LARAMIE COUNTY
WILL EXPIRE AT 400 PM MDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 4106 10517 4124 10515 4123 10453 4100 10456
      4100 10478
TIME...MOT...LOC 2154Z 280DEG 44KT 4108 10464 

$$

Braun

Area Forecast Discussion
National Weather Service Cheyenne WY
325 PM MDT Wed Jun 3 2020

.SHORT TERM...(This afternoon through Friday night)
Issued at 315 PM MDT Wed Jun 3 2020

Current KCYS radar and visible satellite loop show scattered
showers and isolated thunderstorms rapidly pushing east across the
area this afternoon. The overall risk for severe weather is
greatly decreasing this afternoon and this evening since the
stationary front/dry line feature has pushed east across most of
the Nebraska panhandle. There is some lingering moisture across
portions of the panhandle, but winds have shifted into the north
and northwest over the last hour or two. Although the threat for
large hail appears to be decreasing, strong gusty winds have
become more of a concern with shower and thunderstorm activity as
a few observations have shown wind gusts around 55 mph west of the
I-25 corridor. Added gusty wind wording to the forecast for this
evening though most gusts have not been caused by thunderstorm
activity with inverted V soundings present. High res models show
most of this convection diminishing around sunset with clearing
skies.

For Thursday and Friday, models indicate a continuation of zonal
flow on Thursday before the mid to upper level flow backs into the
southwest. Gusty westerly winds are expected along and west of
I-25 where gusts may reach 45 mph at times. Another round of
thunderstorms are possible, but coverage looks to be lower
compared to the previous 2 days. Due to a drier boundary layer,
strong/severe thunderstorm potential looks minimal at this time
with portions of the NE panhandle slightly higher due to better
low level moisture profiles. Highs in the 80s (west) to near 90
(east) will continue each afternoon. Probability of overnight fog
looks minimal at this time, but may become more likely by Friday
night due to moist east to southeast winds.

.LONG TERM...(Saturday through Tuesday)
Issued at 235 AM MDT Wed Jun 3 2020

Decent upper shortwave swings northeast across the region late
Saturday and should produce pretty widespread convection as it
does so. Sunday should be warm and mainly dry in the wake of the
shortwave with some drier air advecting into the area ahead of the
main upper trough that will be over the western CONUS. This trough
will move slowly east and across the CWA Monday and Monday night
with a pretty good cold front passing across early on Monday.
Significantly cooler conditions returning Monday and Tuesday
along with some showers and maybe a few storms over the CWA
Monday.

&&

.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
Issued at 1126 AM MDT Wed Jun 3 2020

Cigs should lower slightly as the afternoon progresses, but VFR
flight categories are still anticipated. The semi-stationary
frontal boundary will continue to keep winds elevated for the
terminals across the forecast region. Due to the nearby frontal
boundary, VCSH and VCTS are likely this afternoon through 0Z. Wind
gusts of 20-30 knots are also likely, especially when VCTS is the
present weather at terminals.

&&

.FIRE WEATHER...
Issued at 224 PM MDT Wed Jun 3 2020

Fire weather concerns will generally be low across most of the
area with any concerns limited to Carbon and Albany counties over
the next several days. Windy conditions will continue each day,
along and west of the Interstate 25 corridor with gusts as high as
40 to 45 mph. Isolated to widely scattered thunderstorms are
possible heading into the weekend, but the next best chance for
widespread showers and thunderstorms will be Saturday and Sunday
with a decent chance of wetting rains as a Pacific cold front
moves through the area. Further east, higher relatively humidity
values between 25 to 40 percent are expected through the forecast
period.

&&

.HYDROLOGY...
Issued at 224 PM MDT Wed Jun 3 2020

High water flows will continue late this week and into this
weekend due to rapid mountain snowmelt. However, current river
forecasts show the area rivers slowly subsiding by early next week
due to cooler temperatures. The best chance fore widespread
precipitation will be Saturday and Saturday night across Carbon
and Albany counties, so will monitor gauge levels into early next
week to see how rivers respond.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...None.
&&

SHORT TERM...TJT
LONG TERM...RE
AVIATION...BW
FIRE WEATHER...TJT
HYDROLOGY...TJT

Hazardous Weather Outlook
National Weather Service Cheyenne WY
222 PM MDT Wed Jun 3 2020

WYZ101>119-042030-
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-
222 PM MDT Wed Jun 3 2020

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 isolated thunderstorms will push east across
southeast Wyoming this afternoon and this evening. Severe
thunderstorms are not expected, but winds may gust as high as 55
mph with the stronger storms.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Severe thunderstorms are possible Saturday and Sunday, mainly
across the eastern plains, as a low pressure system slowly tracks
through the area.

.Spotter information statement...

Spotter activation will not be required at this time.

NEZ002-003-019>021-054-055-095-096-042030-
Dawes-Box Butte-Scotts Bluff County-Banner County-Morrill-
Kimball County-Cheyenne-North Sioux-South Sioux-
222 PM MDT Wed Jun 3 2020

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

Scattered showers and thunderstorms will push east across western
Nebraska this afternoon and into this evening. The threat for
severe thunderstorms is low, but a few storms may contain hail up
to the size of quarters and gusty winds over 65 mph.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Severe thunderstorms are possible Saturday and Sunday, mainly
across the eastern plains, as a low pressure system slowly tracks
through the area.

.Spotter information statement...

Spotter activation is unlikely at this time.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
304 PM MDT WED JUN 3 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0253 PM     NON-TSTM WND GST LARAMIE                 41.31N 105.58W
06/03/2020  M62 MPH          ALBANY             WY   PUBLIC

&&

AW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
305 PM MDT WED JUN 3 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0253 PM     NON-TSTM WND GST 4 W LARAMIE             41.32N 105.67W
06/03/2020  M62 MPH          ALBANY             WY   ASOS

            ASOS STATION KLAR LARAMIE AIRPORT - LAR.

&&

AW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
312 PM MDT WED JUN 3 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0253 PM     TSTM WND GST     4 W LARAMIE             41.32N 105.67W
06/03/2020  M62 MPH          ALBANY             WY   ASOS

            CORRECTS PREVIOUS NON-TSTM WND GST REPORT
            FROM 4 W LARAMIE. ASOS STATION KLAR LARAMIE
            AIRPORT - LAR.

&&

AW