Flash Flood Warning 23, NWS Cheyenne, WY

336 
WGUS75 KCYS 160417
FFSCYS

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1017 PM MDT TUE JUL 15 2014

WYC009-160432-
/O.CAN.KCYS.FF.W.0023.000000T0000Z-140716T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CONVERSE WY-
1017 PM MDT TUE JUL 15 2014

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHERN CONVERSE
COUNTY IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 4339 10510 4314 10501 4299 10575 4318 10581

$$

HAMMER

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
456 PM MDT TUE JUL 15 2014

.SHORT TERM...(THIS EVENING THROUGH THURSDAY)
ISSUED AT 300 PM MDT TUE JUL 15 2014

A CLUSTER OF STORMS IS CURRENTLY MOVING INTO SOUTHWEST LARAMIE
COUNTY AND INTO LARIMER COUNTY IN COLORADO. RECEIVED SOME PEA
SIZED HAIL REPORTS SOUTH OF LARAMIE WHEN THESE STORMS MOVED INTO
ALBANY COUNTY EARLIER. SPC MESOANALYSIS SHOWS CAPE VALUES OF
1000-1500 J/KG ALONG INTERSTATE 25 STRETCHING FROM CHEYENNE TO
WHEATLAND. NORTHWESTERLY FLOW ALOFT WILL CONTINUE TO BE STRONG
THROUGH THE EVENING AND BULK SHEAR WILL BE AROUND 50-55 KTS. WOULD
LIKE TO SEE THESE STORM CELLS BECOME MORE ISOLATED BEFORE GETTING
TOO EXCITED ABOUT THE SVR THREAT. IT WILL BE INTERESTING TO SEE IF
THE ATMOSPHERE WILL DESTABILIZE AGAIN ACROSS LARAMIE AND ALBANY
COUNTIES AFTER THIS STORM CLUSTER MOVES THROUGH. WILL CONTINUE TO
MONITOR ANY INITIATION OF CELLS ACROSS SOUTHEAST WY THROUGH
THE EVENING AS THEY WILL BE MOVING INTO AN UNSTABLE AND SHEARED
ENVIRONMENT. WILL KEEP THE SVR TSTM POTENTIAL IN THE GRIDS THROUGH
THE LATE EVENING.

STRONG SHORTWAVE IS CURRENTLY LOCATED ACROSS SOUTHWESTERN MONTANA
AND IS PROGGED TO MOVE SOUTHEAST THROUGH TONIGHT. LARGE SCALE
ASCENT INCREASES OVER THE CWA BY LATE THIS EVENING AND INTO
TONIGHT WITH THE UPPER JET TO THE SOUTH ACROSS COLORADO. THE
MODELS HAVE BEEN CONSISTENT AT SHOWING QUITE A BIT OF QPF
(0.25-0.75 INCHES) ACROSS THE PLAINS THROUGH TONIGHT...SO LEFT
HEAVY RAIN IN THE FCST. THE HRRR MODEL SHOWS A LARGE AREA OF
MULTICELL STORMS MOVING FROM CONVERSE COUNTY SOUTHEASTWARD INTO
PLATTE COUNTY AND THEN INTO THE WESTERN NEBRASKA PANHANDLE FROM
02-07Z. THE MODELS ARE LIKELY KEYING IN ON AN AREA OF UPPER LEVEL
DIVERGENCE ASSOCIATED WITH THE JET.  SOUNDINGS SHOW GOOD ELEVATED
INSTABILITY AND COMBINED WITH EFFECTIVE SHEAR OF 30-40 KTS COULD
BE SOME MARGINALLY SVR HAIL THROUGH THE NIGHT...MAINLY TO THE EAST
OF THE LARAMIE RANGE.

SHORTWAVE IS DIRECTLY OVERHEAD BY 18Z WED. COLD FRONT WILL PASS
ACROSS THE REGION ON WED MORNING SO TEMPS WILL BE A GOOD 10-15
DEGREES COOLER. WIDESPREAD LOW CLOUD COVER WILL PERSIST THROUGH
LATE MORNING. ALTHOUGH THERE WILL STILL BE A GOOD COVERAGE OF
SHOWERS ESPECIALLY NEAR THE COLORADO BORDER...THE STRONG TO SVR
THREAT WILL BE GREATLY REDUCED. THE AIRMASS WILL BEGIN TO DRY OUT
ON WED NIGHT AND CONTINUE TO DO SO INTO THURS. SLIGHT CHANCE POPS
ARE LIMITED TO THE SOUTHERN NEBRASKA PANHANDLE ON THURS AFTN. THIS
WILL BE THE START OF A WELCOME BREAK FROM STORMS.

.LONG TERM...(THURSDAY NIGHT THROUGH TUESDAY)
ISSUED AT 300 PM MDT TUE JUL 15 2014

A TREND TOWARDS WARMER AND DRIER WEATHER LOOKS TO SET UP OVER THE
REGION DURING THIS PERIOD WITH A STRONG UPPER HIGH FORECAST TO
DEVELOP OVER THE SOUTHERN ROCKIES LATE IN THE WEEKEND AND THEN
EXPANDING NORTHWARD THROUGH EARLY NEXT WEEK. BEST CHANCES FOR
CONVECTION LOOK TO BE FRIDAY AND PERHAPS MONDAY THOUGH WARMING MID
LEVEL TEMPS ASSOCIATED WITH THE STRENGTHENING UPPER HIGH MAY
HINDER CONVECTION EARLY NEXT WEEK. TEMPS WILL TURN VERY WARM TO
HOT SATURDAY INTO EARLY NEXT WEEK WITH 700MB TEMPS WARMING TO
AROUND 15-17C ACROSS THE CWA DURING THAT TIME.

&&

.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z WEDNESDAY AFTERNOON)
ISSUED AT 453 PM MDT TUE JUL 15 2014

LOW PRESSURE OVER WESTERN MONTANA WILL CONTINUE TO MOVE SOUTHEAST
TONIGHT. THIS SYSTEM WILL CAUSE WIDESPREAD SHOWERS AND
THUNDERSTORMS TO DEVELOP OVERNIGHT FROM NORTHWEST TO SOUTHEAST.
SOUTHEAST UPSLOPE FLOW COULD BRING LOWER CEILINGS TO THE SOUTHERN
PANHANDLE...IMPACTING KSNY AND KIBM AS WELL AS HERE AT KCYS.
THUNDERSTORMS TO BECOME MORE WIDESPREAD WEDNESDAY AFTERNOON ONCE
AGAIN

&&

.FIRE WEATHER...
ISSUED AT 300 PM MDT TUE JUL 15 2014

MINIMAL FIRE WEATHER CONCERNS THROUGH THURSDAY. AN UPPER LEVEL
DISTURBANCE WILL MOVE ACROSS THE REGION THIS AFTERNOON THROUGH
WEDNESDAY. SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON
AND CONTINUE THROUGH WEDNESDAY MORNING WITH THE BEST COVERAGE TO
THE EAST OF THE LARAMIE RANGE. A WEAK COLD FRONT WILL MOVE ACROSS
THE REGION LATE TONIGHT WITH COOLER TEMPERATURES FOR WEDNESDAY.
ELEVATED FIRE WEATHER CONDITIONS MAY EXIST ON FRIDAY INTO THE
WEEKEND...ESPECIALLY TO THE WEST OF THE LARAMIE RANGE...AS A
DRIER AIRMASS MOVES INTO THE AREA ALONG WITH MUCH WARMER
TEMPERATURES.

&&

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

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

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
1127 AM MDT TUE JUL 15 2014

WYZ101>119-161115-
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-
1127 AM MDT TUE JUL 15 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WYOMING.

.DAY ONE...TODAY AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP BY THE MIDDLE OF
THIS AFTERNOON ACROSS THE MOUNTAINS OF SOUTHEAST WYOMING. SHOWERS
AND THUNDERSTORMS WILL BECOME MORE NUMEROUS BY THIS EVENING AS THEY
MOVE INTO THE HIGH PLAINS. SOME OF THESE THUNDERSTORMS MAY  BECOME
SEVERE WITH LARGE HAIL...FREQUENT LIGHTNING...AND DAMAGING WINDS THE
MAIN THREAT. HEAVY RAINFALL IS ALSO POSSIBLE WITH A RISK FOR FLASH
FLOODING THROUGH TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH WEDNESDAY AND
WEDNESDAY NIGHT BEFORE SOME DRIER AIR BEGINS TO MOVE INTO THE
REGION BY LATE THIS WEEK. THUNDERSTORM CHANCES WILL DECREASE
SIGNIFICANTLY FOR FRIDAY AND THIS WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE URGED TO REPORT SEVERE WEATHER LATE THIS AFTERNOON
THROUGH THIS EVENING.

&&

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

NEZ002-003-019>021-054-055-095-096-161115-
DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
NORTH SIOUX-SOUTH SIOUX-
1127 AM MDT TUE JUL 15 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA
PANHANDLE.

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS WILL INCREASE IN COVERAGE BY THIS
EVENING...WITH NUMEROUS SHOWERS AND THUNDERSTORMS EXPECTED THROUGH
TONIGHT. A FEW THUNDERSTORMS MAY BECOME SEVERE WITH LARGE HAIL AND
DAMAGING WINDS POSSIBLE. LOCALLY HEAVY RAINFALL IS ALSO EXPECTED
TONIGHT WITH A RISK FOR FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH WEDNESDAY AND
WEDNESDAY NIGHT BEFORE SOME DRIER AIR BEGINS TO MOVE INTO THE
REGION BY LATE THIS WEEK. THUNDERSTORM CHANCES WILL DECREASE
SIGNIFICANTLY FOR FRIDAY AND THIS WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE URGED TO REPORT SEVERE WEATHER 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
645 PM MDT TUE JUL 15 2014

WYZ101-160130-
CONVERSE COUNTY LOWER ELEVATIONS WY-
645 PM MDT TUE JUL 15 2014

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CONVERSE COUNTY UNTIL 730
PM MDT...

AT 643 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 14 MILES NORTH OF ROLLING HILLS ESTATES...OR 30
MILES NORTHWEST OF DOUGLAS...MOVING EAST AT 15 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
MAINLY RURAL AREAS OF CENTRAL CONVERSE COUNTY.

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.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 4338 10542 4302 10522 4299 10582 4316 10589
TIME...MOT...LOC 0045Z 252DEG 14KT 4310 10574

HAMMER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
708 PM MDT TUE JUL 15 2014

WYZ115>117-160200-
LARAMIE VALLEY WY-SOUTH LARAMIE RANGE WY-SOUTH LARAMIE RANGE
FOOTHILLS WY-
708 PM MDT TUE JUL 15 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LARAMIE AND
SOUTHEASTERN ALBANY COUNTIES UNTIL 800 PM MDT...

AT 703 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES NORTHWEST OF LARAMIE...MOVING SOUTHEAST
AT 40 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  LARAMIE...
  TIE SIDING...
  VEDAUWOO...
  PUMPKIN VINE...
  BUFORD...
  FEDERAL...

THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILE MARKERS 300 AND
344.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 4134 10584 4153 10566 4128 10504 4100 10517
      4099 10546
TIME...MOT...LOC 0108Z 306DEG 35KT 4134 10562

HAMMER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
712 PM MDT TUE JUL 15 2014

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

0711 PM     HAIL             24 NW DOUGLAS           43.00N 105.73W
07/15/2014  E0.75 INCH       CONVERSE           WY   TRAINED SPOTTER

&&

GCLAYCOM

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
717 PM MDT TUE JUL 15 2014

WYZ104-105-160200-
FERRIS/SEMINOE/SHIRLEY MOUNTAINS WY-SHIRLEY BASIN WY-
717 PM MDT TUE JUL 15 2014

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CARBON COUNTY UNTIL
800 PM MDT...

AT 713 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 13 MILES NORTHEAST OF SEMINOE DAM...OR 42 MILES
SOUTHWEST OF CASPER...MOVING EAST AT 30 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  BATTLE MOUNTAIN...

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.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 4223 10609 4200 10622 4223 10684 4240 10675
TIME...MOT...LOC 0118Z 292DEG 24KT 4228 10668

HAMMER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
718 PM MDT TUE JUL 15 2014

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

0714 PM     HAIL             2 WSW LARAMIE           41.30N 105.62W
07/15/2014  E0.75 INCH       ALBANY             WY   CO-OP OBSERVER

            HAIL BEGAN AS PEA SIZE AND APPROACHED DIME SIZE.

&&

DDEAL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
727 PM MDT TUE JUL 15 2014

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

0726 PM     HAIL             7 SSE LARAMIE           41.22N 105.53W
07/15/2014  E0.50 INCH       ALBANY             WY   TRAINED SPOTTER

&&

DDEAL