Alert archive / Nebraska / Special Weather Statements in 2014

Special Weather Statement, NWS Cheyenne, WY

July 11, 2014Dawes County, Nebraska

NWS Cheyenne, WY issued this special weather statement at Jul 11, 2014, 5:31 PM MDT for Dawes County, Nebraska. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 11, 2014, 5:31 PM MDT (23:31 UTC)
Expired
Jul 11, 2014, 6:00 PM MDT
In force
29 min
Issued by
NWS Cheyenne, WY

County Dawes County, NE

The radar

The Rapid City radar (KUDX), 171 km from the middle of the area, began a volume at 23:32 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

Rapid City, SD (KRAP), launched 12:00Z, 11.5 hours before the alert went out and 165 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, Rapid City, SD at 12:00Z on 2014-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 12:00Z on 2014-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -57 square meters per square second.19395878Sfc1 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
5 J/kg
Mixed-layer CIN
-239 J/kg
Mixed-layer LCL
2123 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-57 m²/s²
0-3 km storm-relative helicity
2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 11, 3:13 PM MDT, 2 hours 18 minutes earlier.

Area forecast discussion, Jul 11, 3:13 PM MDT, 2 hours 18 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
313 PM MDT FRI JUL 11 2014

.SHORT TERM...(THIS EVENING THROUGH SATURDAY)
ISSUED AT 312 PM MDT FRI JUL 11 2014

CONVECTION GRADUALLY INCREASING ACROSS SOUTHEAST WYOMING THIS
AFTERNOON AND THIS WILL MOVE EAST OVER THE NEBRASKA PANHANDLE THIS
EVENING. HEAVY RAIN CONTINUES TO BE THE MAIN THREAT FROM STRONGER
STORMS WITH MOST LIKELY AREA FOR THIS BEING EAST OF THE MTNS INTO
THIS EVENING. ANY FLOODING THAT MIGHT OCCUR SHOULD REMAIN RATHER
LOCALIZED. SOME HAIL THREAT STILL THERE AS WELL THOUGH UPPER
SUPPORT NOT ALL THAT GREAT. ACTIVITY WILL DECREASE OVERNIGHT
THOUGH SOME MAY HANG ON OVER NORTHEAST PARTS OF THE CWA THROUGH
THE NIGHT.

SIMILAR SCENARIO EXPECTED FOR SATURDAY AS SFC UPSLOPE FLOW BEHIND
A WEAK SFC FRONT THAT WILL PASS ACROSS DURING THE DAY ALLOWS FOR
REDEVELOPMENT OF CONVECTION. INSTABILITY NOT PROGGED TO BE AS
GREAT THOUGH SO ACTIVITY LIKELY TO BE MORE SHOWERY IN NATURE.
TEMPS JUST A LITTLE COOLER OVER THE PLAINS. ACTIVITY WILL DIE OUT
SAT EVENING. A STRONGER FRONT WILL THEN PUSH SOUTH ACROSS THE CWA
SUNDAY WITH SCTD SHOWERS AND A FEW STORMS ONCE AGAIN.

.LONG TERM...(SATURDAY NIGHT THROUGH FRIDAY)
ISSUED AT 312 PM MDT FRI JUL 11 2014

A DEEP UPPER LEVEL TROUGH WILL MAINTAIN HOLD OVER THE EASTERN CONUS
THROUGH THE EXTENDED PERIOD...WITH A STRONG UPPER HIGH SITUATED OVER
THE WEST. THIS STAGNANT PATTERN WILL KEEP THE CWA UNDER NORTHWEST
FLOW THROUGH THE PERIOD. TEMPERATURES WILL REMAIN WELL BELOW
NORMAL...WITH READINGS GENERALLY IN THE 70S BELOW 7500 FEET...WITH
60S IN THE HIGHER ELEVATIONS. A STRONG COLD FRONT ASSOCIATED WITH
THE MAIN TROUGH TO THE EAST WILL DROP SOUTH ACROSS THE CWA ON
MONDAY MORNING...WITH NORTHEAST WINDS BEHIND THE FRONT VEERING TO
THE SOUTHEAST BY MONDAY NIGHT. WILL SEE A FEW SHOWERS/TSTORMS OVER
THE MOUNTAINS ON MONDAY WITH THE FRONT...WITH MINIMAL CHANCE FOR
CONVECTION FURTHER EAST IN THE MORE STABLE POST-FRONTAL
ENVIRONMENT. A RATHER POTENT SHORTWAVE WILL ROUND THE TOP OF THE
RIDGE AND WILL MOVE SOUTHEAST ACROSS THE HIGH PLAINS ON TUESDAY
AND TUESDAY NIGHT. THIS WAVE WILL CARRY ALONG PLENTIFUL PACIFIC
MOISTURE...THUS WILL SEE A MUCH BETTER CHANCE FOR CONVECTION ON
TUESDAY WITH THE UPPER WAVE AND UPSLOPE FORCING. GFS IS PRODUCING
BULK SHEAR VALUES OF 40 TO 50 KTS OVER THE CWA WITH THE JET
OVERHEAD SO WOULD NOT BE SURPRISED IF A FEW STORMS ORGANIZE TO
BECOME STRONG/SEVERE. BOTH GFS AND ECMWF KEEP SHOWERS/STORMS
ONGOING THROUGH THE NIGHT...WITH ACTIVITY GRADUALLY SHIFTING WEST
TOWARD THE MOUNTAINS FOR WEDNESDAY. THE UPPER RIDGE WILL REBOUND
BACK OVER THE ROCKIES ON THURSDAY...WITH TEMPS WARMING FOR THE CWA
AND MUCH DRIER CONDITIONS OVERSPREADING THE REGION.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z SATURDAY MORNING)
ISSUED AT 1151 AM MDT FRI JUL 11 2014

SHOWERS AND THUNDERSTORMS WILL INCREASE IN COVERAGE THIS AFTERNOON
OVER THE FORECAST AREA...WITH MVFR TO BRIEF IFR CONDITIONS IN
HEAVY RAIN. A FEW STRONGER STORMS THAT MOVE OVER THE EASTERN SITES
COULD PRODUCE HAIL AND STRONG WIND GUSTS AS WELL. THIS ACTIVITY
WILL DISSIPATE STEADILY FROM WEST TO EAST THIS EVENING ALTHOUGH A
FEW SHOWERS COULD PERSIST OVERNIGHT. MOIST EASTERLY UPSLOPE FLOW
WILL BRING AT LEAST MVFR CIGS TO EASTERN TERMINALS AFTER 09Z
TONIGHT AS WELL...WHICH WILL SLOWLY DISSIPATE SATURDAY MORNING.

&&

.FIRE WEATHER...
ISSUED AT 312 PM MDT FRI JUL 11 2014

CONCERNS TO REMAIN LOW INTO NEXT WEEK WITH WEATHER CONDITIONS
REMAINING NON-CRITICAL. SCATTERED THUNDERSTORMS WILL OCCUR MOST
AFTERNOONS AND EVENINGS THROUGH SUNDAY THEN BECOME MORE ISOLATED
NEXT WEEK. DRY LIGHTNING NOT EXPECTED WITH MONSOONAL MOISTURE OVER
THE REGION.

&&

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

SHORT TERM...RE
LONG TERM...RJM
AVIATION...RJM
FIRE WEATHER...RE
Hazardous weather outlook, Jul 11, 10:24 AM MDT, 7 hours 7 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
1024 AM MDT FRI JUL 11 2014

WYZ104-105-109>116-121100-
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN-
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-
1024 AM MDT FRI JUL 11 2014

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS WILL DEVELOP.
SEVERE THUNDERSTORMS ARE NOT EXPECTED...HOWEVER A FEW STRONGER
STORMS MAY PRODUCE LOCALLY HEAVY RAINFALL...SMALL HAIL AND GUSTY
WINDS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ISOLATED TO SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS
ARE EXPECTED SATURDAY THROUGH WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE REQUIRED 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-WYZ101>103-106>108-117>119-
121100-
DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
NORTH SIOUX-SOUTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS-
NIOBRARA COUNTY-NORTH LARAMIE RANGE-
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
EAST PLATTE COUNTY-GOSHEN COUNTY-SOUTH LARAMIE RANGE FOOTHILLS-
CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY-
1024 AM MDT FRI JUL 11 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA
PANHANDLE...SOUTHEAST WYOMING.

.DAY ONE...TODAY AND TONIGHT

SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS WILL DEVELOP.
SOME OF THE STORMS MAY BECOME STRONG TO SEVERE THIS AFTERNOON INTO
EARLY THIS EVENING WITH HAIL AND STRONG WINDS THE MAIN THREAT.
OTHERWISE LOCALLY HEAVY RAINFALL IS POSSIBLE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ISOLATED TO SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS ARE
EXPECTED MAINLY SATURDAY...SUNDAY...AND WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED TODAY AND TONIGHT.

&&

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

In the hours before

Local storm report, Jul 11, 4:16 PM MDT, 1 hour 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
416 PM MDT FRI JUL 11 2014

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

0400 PM     TSTM WND DMG     7 SW KIMBALL            41.16N 103.75W
07/11/2014                   KIMBALL            NE   LAW ENFORCEMENT

            POWER LINES DOWN

&&

MAZUR
Special weather statement, Jul 11, 4:48 PM MDT, 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
448 PM MDT FRI JUL 11 2014

WYZ103-105-112330-
NORTH LARAMIE RANGE WY-SHIRLEY BASIN WY-
448 PM MDT FRI JUL 11 2014

...SIGNIFICANT WEATHER ADVISORY FOR EXTREME SOUTHERN CONVERSE AND
NORTHEASTERN ALBANY COUNTIES UNTIL 530 PM MDT...

AT 446 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES WEST OF GARRETT...OR 39 MILES WEST OF
WHEATLAND...MOVING NORTHEAST AT 20 MPH.

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

THIS STORM WILL BE NEAR...
GARRETT AROUND 500 PM MDT.
FRIEND PARK CAMPGROUND AROUND 525 PM MDT.
LARAMIE PEAK AROUND 530 PM MDT.

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

&&

LAT...LON 4239 10534 4214 10528 4200 10587 4216 10593
TIME...MOT...LOC 2248Z 246DEG 19KT 4212 10571

RUBIN
Special weather statement, Jul 11, 4:49 PM MDT, 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
449 PM MDT FRI JUL 11 2014

WYZ103>105-112330-
FERRIS/SEMINOE/SHIRLEY MOUNTAINS WY-NORTH LARAMIE RANGE WY-SHIRLEY
BASIN WY-
449 PM MDT FRI JUL 11 2014

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ALBANY AND NORTHEASTERN
CARBON COUNTIES UNTIL 530 PM MDT...

AT 446 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 7 MILES SOUTHEAST OF BATTLE MOUNTAIN...OR 55
MILES SOUTH OF CASPER...MOVING NORTHEAST AT 20 MPH.

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

THIS STORM WILL BE NEAR...
RURAL NORTHWESTERN ALBANY COUNTY THROUGH 530 PM MDT
RURAL NORTHEASTERN CARBON COUNTY THROUGH 530 PM MDT
RURAL NORTHERN ALBANY COUNTY THROUGH 530 PM MDT

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

&&

LAT...LON 4235 10597 4212 10571 4197 10611 4206 10622
TIME...MOT...LOC 2249Z 226DEG 19KT 4206 10610

RUBIN
Special weather statement, Jul 11, 4:51 PM MDT, 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
451 PM MDT FRI JUL 11 2014

WYZ114>116-112330-
LARAMIE VALLEY WY-SNOWY RANGE WY-SOUTH LARAMIE RANGE WY-
451 PM MDT FRI JUL 11 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN ALBANY AND
SOUTHEASTERN CARBON COUNTIES UNTIL 530 PM MDT...

AT 446 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR ILLINOIS CREEK CAMPGROUND...OR 38 MILES
SOUTHWEST OF LARAMIE...MOVING EAST AT 30 MPH.

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

THIS STORM WILL BE NEAR...
LAKE OWEN...LAKE OWEN CAMPGROUND AND ALBANY AROUND 500 PM MDT.
WOODS LANDING AROUND 510 PM MDT.
LAKE HATTIE RESERVOIR AROUND 520 PM MDT.

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

&&

LAT...LON 4100 10634 4113 10636 4130 10580 4100 10567
TIME...MOT...LOC 2251Z 253DEG 28KT 4108 10620

RUBIN
Special weather statement, Jul 11, 5:09 PM MDT, 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
509 PM MDT FRI JUL 11 2014

NEZ021-120000-
MORRILL NE-
509 PM MDT FRI JUL 11 2014

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MORRILL COUNTY UNTIL
600 PM MDT...

AT 505 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 8 MILES NORTHWEST OF ANGORA...OR 20 MILES
SOUTHWEST OF ALLIANCE...MOVING EAST AT 15 MPH.

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

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  ANGORA...

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

&&

LAT...LON 4176 10290 4189 10335 4200 10330 4201 10324
      4200 10281
TIME...MOT...LOC 2309Z 285DEG 11KT 4195 10320

HAMMER
Special weather statement, Jul 11, 5:31 PM MDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 1:25 PM MDTSpecial Weather StatementCYSLaramie35 min
Jul 11, 1:58 PM MDTSpecial Weather StatementCYSLaramie47 min
Jul 11, 2:19 PM MDTSpecial Weather StatementCYSGoshen26 min
Jul 11, 3:06 PM MDTSpecial Weather StatementCYSLaramie39 min
Jul 11, 4:48 PM MDTSpecial Weather StatementCYSPlatte42 min
Jul 11, 4:49 PM MDTSpecial Weather StatementCYS41 min
Jul 11, 4:51 PM MDTSpecial Weather StatementCYS39 min
Jul 10, 6:39 PM MDTSpecial Weather StatementCYSDawes51 min
Jul 10, 9:40 PM MDTSpecial Weather StatementCYSCheyenne35 min
Jul 10, 10:33 PM MDTSpecial Weather StatementCYSCheyenne, Morrill57 min
Jul 11, 2:39 AM MDTSpecial Weather StatementCYSMorrill51 min
Jul 11, 2:38 PM MDTSpecial Weather StatementCYSSioux37 min
Jul 11, 3:12 PM MDTSpecial Weather StatementCYSSioux33 min
Jul 11, 3:49 PM MDTSpecial Weather StatementCYSBox Butte41 min
Jul 11, 3:58 PM MDTSevere Thunderstorm WarningCYSKimball47 min
Jul 11, 4:04 PM MDTSpecial Weather StatementCYSScotts Bluff41 min
Jul 11, 4:23 PM MDTSevere Thunderstorm WarningCYSBox Butte, Morrill, Scotts Bluff, Sioux52 min
Jul 11, 4:43 PM MDTSevere Thunderstorm WarningCYSCheyenne, Kimball47 min
Jul 11, 5:09 PM MDTSpecial Weather StatementCYSMorrill51 min
Jul 11, 5:15 PM MDTFlash Flood WarningCYSKimball6 hr
Jul 11, 5:55 PM MDTSpecial Weather StatementCYSCheyenne35 min

Nearby

Special Weather Statements in Nebraska, 2014Every special weather statement in 2014

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.