Severe Thunderstorm Warning 86, NWS Cheyenne, WY

421 
WWUS55 KCYS 262138
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
338 PM MDT THU JUN 26 2014

WYC031-262215-
/O.CON.KCYS.SV.W.0086.000000T0000Z-140626T2215Z/
PLATTE WY-
338 PM MDT THU JUN 26 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
PLATTE COUNTY UNTIL 415 PM MDT...

AT 333 PM MDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES SOUTHWEST OF WHEATLAND TO 6 MILES WEST OF
CHUGWATER...AND MOVING EAST AT 20 MPH.

HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

SEVERE THUNDERSTORMS WILL BE NEAR...
  CHUGWATER AND BORDEAUX AROUND 345 PM MDT.
  WHEATLAND AROUND 350 PM MDT.

THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILEPOSTS 51 AND 84.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN
CHEYENNE.

&&

LAT...LON 4171 10501 4172 10503 4199 10516 4223 10488
      4169 10465
TIME...MOT...LOC 2137Z 250DEG 18KT 4201 10505 4179 10491

HAIL...1.25IN
WIND...60MPH

$$

RUBIN

850 
WWUS55 KCYS 262212
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
412 PM MDT THU JUN 26 2014

WYC031-262221-
/O.EXP.KCYS.SV.W.0086.000000T0000Z-140626T2215Z/
PLATTE WY-
412 PM MDT THU JUN 26 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN PLATTE COUNTY WILL
EXPIRE AT 415 PM MDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT.

LAT...LON 4171 10501 4172 10503 4199 10516 4223 10488
      4169 10465
TIME...MOT...LOC 2211Z 237DEG 18KT 4216 10490 4193 10475

$$

RUBIN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
1203 PM MDT THU JUN 26 2014

.SHORT TERM...(TODAY THROUGH SATURDAY)
ISSUED AT 250 AM MDT THU JUN 26 2014

FORECAST CHALLENGES DEAL WITH SEVERE THUNDERSTORM TIMING AND
LOCATION ONCE AGAIN TODAY.

CURRENTLY...EAST TO SOUTHEASTERLY LOW LEVEL WINDS CONTINUE FOR
AREAS EAST OF THE LARAMIE RANGE THIS MORNING. THESE WINDS ARE
KEEPING IN A PRETTY MOIST AIRMASS WITH DEWPOINTS IN THE MID TO
UPPER 50S IN THE PANHANDLE WITH MID 40S HERE AT CHEYENNE. MOSAIC
RADAR SHOWS CONVECTION HAS SHIFTED EAST INTO THE NORTH PLATTE
FORECAST AREA. WATER VAPOR IMAGERY SHOWING THE NEXT UPSTREAM
PACIFIC SHORTWAVE MOVING INTO IDAHO AT THIS TIME. SURFACE ANALYSIS
SHOWING A COLD FRONT FROM A SURFACE LOW IN NORTHEASTERN
WYOMING...EXTENDING SOUTHWEST TO CASPER TO ANOTHER SURFACE LOW
LOCATED NEAR SALT LAKE CITY.

LATEST ECMWF BRINGS THAT UPPER SHORTWAVE INTO WESTERN WYOMING THIS
AFTERNOON AND INTO EASTERN WYOMING THIS EVENING. GOING TO BE A
PRETTY WARM DAY WITH HIGHS APPROACHING 90 OUT IN THE PANHANDLE
THIS AFTERNOON AND MID 80S ALONG THE I-25 CORRIDOR. THE NAM
SOUNDING FOR SIDNEY THIS AFTERNOON SHOWING VERY UNSTABLE
CONDITIONS WITH LIFTED INDICES AROUND -9C. FORECAST CAPE
APPROACHES 4000 J/KG OUT THERE WITH CHADRON COMING IN AROUND 3000
J/KG. THINK THE MAIN SHOW FOR SEVERE THUNDERSTORMS WILL BE OUT
OVER THE PANHANDLE TODAY. SPC SLIGHT RISK AREA LOOKS PRETTY GOOD
KEEPING MOST OF OUR WYOMING ZONES OUT OF THE SEVERE RISK.

TIMING ON STORMS TODAY...THE PANHANDLE COULD BE CAPPED A WHILE
THROUGH MID AFTERNOON...SAY 21Z OR SO...MAYBE A LITTLE LATER
BEFORE THE CAP BREAKS AROUND 650MBS. WITH THE UPPER LEVEL
SHORTWAVE EXPECTED TO MOVE IN THIS EVENING...COULD SEE SEVERE
STORMS CONTINUE INTO THE LATE EVENING OUT THERE. NAM SOUNDINGS
FINALLY START CAPPING THINGS OFF AROUND 06Z OR SO. WOULD NOT BE
SURPRISED TO SEE SEVERE STORMS CONTINUE INTO THE EARLY MORNING
HOURS FRIDAY.

SURFACE FRONT SHIFTS A LITTLE FURTHER EAST FRIDAY...BUT STILL
CONCERN FOR THE PANHANDLE FRIDAY AFTERNOON. COULD BE AN EARLY SHOW
FRIDAY AFTERNOON OUT THERE AS NAM SOUNDINGS REALLY STABILIZE
DURING THE LATE AFTERNOON.

FINALLY FOR SATURDAY...ALL GUIDANCE SHOWING THE FRONT WELL EAST
INTO CENTRAL AND EASTERN NEBRASKA SATURDAY AFTERNOON. THINK MOST
AREAS WILL BE DRY SATURDAY. MAYBE THE ONLY EXCEPTION WOULD BE THE
NORTHERN PANHANDLE AND MAYBE NORTHERN NIOBRARA COUNTY THAT COULD
SEE SOME THUNDERSTORMS.

.LONG TERM...(SATURDAY NIGHT THROUGH WEDNESDAY)
ISSUED AT 250 AM MDT THU JUN 26 2014

A GENERALLY DRY AND WARM WEATHER PATTERN EXPECTED ACROSS THE CWA
SAT NIGHT THROUGH EARLY WEDNESDAY WITH A DRY ZONAL UPPER FLOW
SUNDAY GRADUALLY BECOMING NWLY EARLY NEXT WEEK AS UPPER RIDGING
BUILDS OVER THE WESTERN PART OF THE COUNTRY. BETTER MOISTURE WILL
BE SUPPRESSED TO THE SOUTHEAST OF THE CWA INTO EARLY NEXT WEEK
THEN MAY CREEP BACK NORTHWARD BY WEDS. A WEAK PUSH OF COOLER
PACIFIC AIR WILL BRING A BIT COOLER TEMPS FOR MONDAY THEN SOME
COOLER AIR MAY SINK SOUTH OUT OF CENTRAL CANADA AND PUSH A FRONT
UP AGAINST THE MTNS WEDS WITH RESULTANT UPSLOPE FLOW INCREASING
CHANCES FOR CONVECTION THEN.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z FRIDAY MORNING)
ISSUED AT 1203 PM MDT THU JUN 26 2014

AN UPPER LEVEL DISTURBANCE APPROACHING FROM THE WEST WILL SPARK
OFF ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS LATE THIS AFTERNOON
AND EVENING. T-STORMS WILL DEVELOP OVER THE MOUNTAINS BY 19Z AND
WILL MOVE OFF TO THE NORTHEAST AND INTO THE NEBRASKA PANHANDLE BY
00Z. PERIODS OF MVFR VSBYS AND CIGS WILL OCCUR IN THE
STORMS...WITH POSSIBLY IFR CONDITIONS AND HAIL IN STRONG TO SEVERE
STORMS FROM KBFF TO KAIA. A COLD FRONT WILL MOVE WEST TO EAST
ACROSS THE FORECAST AREA AFTER 03Z WITH SHOWERS AND PERHAPS A FEW
TSTORMS REDEVELOPING OVERNIGHT. WINDS WILL VEER TO THE NORTHWEST
AND WILL INCREASE BEHIND THE FRONT AS WELL.

&&

.FIRE WEATHER...
ISSUED AT 250 AM MDT THU JUN 26 2014

A COUPLE MORE DAYS OF SHOWERS AND THUNDERSTORMS IN STORE FOR
MAINLY AREAS EAST OF THE LARAMIE RANGE. BUT THERE IS A CHANGE
COMING. THE STATIONARY FRONT THAT HAS BEEN ALONG THE EAST SLOPES
OF THE LARAMIE RANGE THE PAST WEEK WILL BEGIN TO MOVE OFF TO THE
EAST BY FRIDAY. WIDESPREAD WETTING RAINS WILL THEN DECREASE AFTER
FRIDAY. A WINDY AND DRY PERIOD THEN SETS UP FOR SATURDAY AND
SUNDAY...WITH AFTERNOON HUMIDITIES FALLING INTO THE TEENS AREA
WIDE. THIS DRY/WINDY PATTERN WILL CONTINUE INTO TUESDAY BEFORE WE
SEE A BREAK IN WINDS. NEXT CHANCE FOR SHOWERS AND THUNDERSTORMS
WILL POSSIBLY BE NEXT WEDNESDAY WHEN ANOTHER FRONT MOVES IN FROM
THE NORTH AND LAYS UP ALONG THE EAST SLOPES OF THE LARAMIE RANGE
AGAIN.

&&

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

SHORT TERM...CLAYCOMB
LONG TERM...RE
AVIATION...RJM
FIRE WEATHER...CLAYCOMB

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
426 AM MDT THU JUN 26 2014

WYZ101>119-271100-
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-
426 AM MDT THU JUN 26 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING...
SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING.

.DAY ONE...TODAY AND TONIGHT

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED ONCE AGAIN OVER
MOST OF THE AREA THIS AFTERNOON INTO THIS EVENING. SEVERE STORMS
ARE NOT EXPECTED BUT A FEW COULD BECOME STRONG MAINLY NEAR THE
NEBRASKA BORDER.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE ON FRIDAY...AND AGAIN
NEXT WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

&&

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE

NEZ002-003-019>021-054-055-095-096-271100-
DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
NORTH SIOUX-SOUTH SIOUX-
426 AM MDT THU JUN 26 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA
PANHANDLE.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED TO MOVE OVER THE AREA BY LATE
THIS AFTERNOON AND CONTINUE INTO THIS EVENING. A FEW SEVERE STORMS
ARE POSSIBLE WITH LARGE HAIL THE MAIN THREAT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE ON FRIDAY...AND AGAIN
NEXT WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED BY LATE THIS AFTERNOON INTO THIS
EVENING.

&&

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND
CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT...
HTTP://WEATHER.GOV/CHEYENNE

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
207 PM MDT THU JUN 26 2014

WYZ106>108-262045-
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY WY-EAST PLATTE
COUNTY WY-GOSHEN COUNTY WY-
207 PM MDT THU JUN 26 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PLATTE AND WESTERN
GOSHEN COUNTIES UNTIL 245 PM MDT...

AT 206 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR CHUGWATER...OR 25 MILES SOUTHEAST OF
WHEATLAND...MOVING NORTH AT 10 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THIS STORM.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
MAINLY RURAL AREAS OF SOUTHEASTERN PLATTE AND WESTERN GOSHEN
COUNTIES.

THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 48 AND
64.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4198 10485 4195 10443 4166 10465 4166 10488
TIME...MOT...LOC 2007Z 202DEG 9KT 4173 10475

HAMMER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
315 PM MDT THU JUN 26 2014

WYZ101>103-107-262200-
CONVERSE COUNTY LOWER ELEVATIONS WY-EAST PLATTE COUNTY WY-NIOBRARA
COUNTY WY-NORTH LARAMIE RANGE WY-
315 PM MDT THU JUN 26 2014

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PLATTE...CONVERSE
AND EXTREME SOUTHWESTERN NIOBRARA COUNTIES UNTIL 400 PM MDT...

AT 312 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 18 MILES NORTHWEST
OF ROLLING HILLS ESTATES TO 9 MILES NORTHEAST OF ESTERBROOK
CAMPGROUND...AND MOVING NORTHEAST AT 20 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 55 MPH ARE
EXPECTED WITH THESE STORMS.

LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...
  DOUGLAS...
  GLENDO...

THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 110 AND
158.

THESE STORMS MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT UNTIL 900 PM MDT. BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4256 10477 4242 10523 4308 10609 4350 10608
TIME...MOT...LOC 2114Z 223DEG 17KT 4314 10600 4255 10522

RUBIN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
316 PM MDT THU JUN 26 2014

WYZ106>108-262200-
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY WY-EAST PLATTE
COUNTY WY-GOSHEN COUNTY WY-
316 PM MDT THU JUN 26 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN PLATTE AND EXTREME
SOUTHWESTERN GOSHEN COUNTIES UNTIL 400 PM MDT...

AT 314 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 12 MILES WEST OF
BORDEAUX TO 8 MILES WEST OF CHUGWATER...AND MOVING NORTHEAST AT 20
MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 55 MPH ARE
EXPECTED WITH THESE STORMS.

THESE STORMS WILL BE NEAR...
CHUGWATER AROUND 340 PM MDT.
BORDEAUX AROUND 345 PM MDT.
WHEATLAND AROUND 355 PM MDT.

THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 50 AND
93.

THESE STORMS MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT UNTIL 900 PM MDT. BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4225 10502 4172 10458 4166 10509 4195 10528
TIME...MOT...LOC 2117Z 242DEG 17KT 4193 10516 4172 10496

RUBIN