Alert archive / Wyoming / Special Weather Statements in 2014

Special Weather Statement, NWS Cheyenne, WY

June 24, 2014Platte County, Wyoming

NWS Cheyenne, WY issued this special weather statement at Jun 24, 2014, 3:13 PM MDT for Platte County, Wyoming. It was in force for 47 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: Jun 24, 2014, 3:13 PM MDT (21:13 UTC)
Expired: Jun 24, 2014, 4:00 PM MDT
In force: 47 min
Issued by: NWS Cheyenne, WY

County Platte County, WY

The radar

The Cheyenne radar (KCYS), 126 km from the middle of the area, began a volume at 21:15 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, 9.2 hours before the alert went out and 316 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 373 J/kg
Mixed-layer CIN: -267 J/kg
Mixed-layer LCL: 894 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 59 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 Jun 24, 11:56 AM MDT, 3 hours 17 minutes earlier.

Area forecast discussion, Jun 24, 11:56 AM MDT, 3 hours 17 minutes before

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Hazardous weather outlook, Jun 24, 10:37 AM MDT, 4 hours 36 minutes before

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In the hours before

Local storm report, Jun 24, 10:18 AM MDT, 4 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1018 AM MDT TUE JUN 24 2014

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

0625 PM     HAIL             10 S LARAMIE            41.17N 105.58W
06/23/2014  E0.50 INCH       ALBANY             WY   TRAINED SPOTTER

&&

MJAMSKI

Special weather statement, Jun 24, 2:37 PM MDT, 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
237 PM MDT TUE JUN 24 2014

WYZ116-117-242115-
SOUTH LARAMIE RANGE WY-SOUTH LARAMIE RANGE FOOTHILLS WY-
237 PM MDT TUE JUN 24 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LARAMIE COUNTY UNTIL
315 PM MDT...

AT 230 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 9 MILES SOUTHEAST OF BUFORD...OR 22 MILES
SOUTHWEST OF CHEYENNE...MOVING EAST AT 10 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
MAINLY RURAL AREAS OF EXTREME SOUTHWESTERN LARAMIE COUNTY.

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 4110 10492 4100 10492 4100 10527 4108 10528
TIME...MOT...LOC 2037Z 267DEG 11KT 4101 10515

HAMMER

Special weather statement, Jun 24, 3:09 PM MDT, 4 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
309 PM MDT TUE JUN 24 2014

WYZ117-118-242200-
CENTRAL LARAMIE COUNTY WY-SOUTH LARAMIE RANGE FOOTHILLS WY-
309 PM MDT TUE JUN 24 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN LARAMIE COUNTY UNTIL 400
PM MDT...

AT 302 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES NORTH OF NATURAL FORT REST AREA...OR 11
MILES SOUTHWEST OF CHEYENNE...MOVING EAST AT 15 MPH.

HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG
WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  SOUTH GREELEY HIGHWAY...

THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 1 AND 8.

THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. 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 4114 10465 4101 10465 4100 10506 4107 10507
TIME...MOT...LOC 2109Z 254DEG 14KT 4105 10493

HAMMER

Special weather statement, Jun 24, 3:13 PM MDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
313 PM MDT TUE JUN 24 2014

WYZ103-242200-
NORTH LARAMIE RANGE WY-
313 PM MDT TUE JUN 24 2014

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ALBANY COUNTY UNTIL
400 PM MDT...

AT 306 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR FRIEND PARK CAMPGROUND...OR 31 MILES
NORTHWEST OF WHEATLAND...MOVING SOUTHEAST AT 10 MPH.

HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG
WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  LARAMIE PEAK...

THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. 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 4219 10528 4210 10529 4210 10553 4229 10558
      4229 10538
TIME...MOT...LOC 2113Z 307DEG 5KT 4224 10548

HAMMER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 6:14 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	46 min
Jun 23, 6:30 PM MDT	Special Weather Statement	CYS	Laramie	60 min
Jun 23, 6:57 PM MDT	Severe Thunderstorm Warning	CYS	Albany	48 min
Jun 23, 7:03 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	42 min
Jun 23, 7:50 PM MDT	Special Weather Statement	CYS	Laramie	40 min
Jun 23, 8:14 PM MDT	Special Weather Statement	CYS	Carbon	46 min
Jun 23, 8:19 PM MDT	Special Weather Statement	CYS		41 min
Jun 24, 2:37 PM MDT	Special Weather Statement	CYS	Laramie	38 min
Jun 24, 3:09 PM MDT	Special Weather Statement	CYS	Laramie	51 min
Jun 24, 3:47 PM MDT	Special Weather Statement	CYS	Platte	43 min
Jun 24, 4:05 PM MDT	Special Weather Statement	CYS	Laramie	40 min
Jun 24, 4:14 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	46 min
Jun 24, 4:55 PM MDT	Special Weather Statement	CYS	Laramie	50 min
Jun 24, 5:00 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	45 min
Jun 24, 5:45 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	27 min

Nearby

Special Weather Statements in Wyoming, 2014 Every 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.