Alert archive / Wyoming / Special Weather Statements in 2012

Special Weather Statement, NWS Cheyenne, WY

July 21, 2012Niobrara County, Wyoming

NWS Cheyenne, WY issued this special weather statement at Jul 21, 2012, 8:47 PM MDT for Niobrara County, Wyoming. It was in force for 58 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 21, 2012, 8:47 PM MDT (02:47 UTC)
Expired: Jul 21, 2012, 9:45 PM MDT
In force: 58 min
Issued by: NWS Cheyenne, WY

County Niobrara County, WY

The radar

The Rapid City radar (KUDX), 126 km from the middle of the area, began a volume at 02:47 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 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 21, 6:10 PM MDT, 2 hours 37 minutes earlier.

Area forecast discussion, Jul 21, 6:10 PM MDT, 2 hours 37 minutes before

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Hazardous weather outlook, Jul 21, 4:52 PM MDT, 3 hours 55 minutes before

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In the hours before

Special weather statement, Jul 21, 5:14 PM MDT, 3 hours 33 minutes before

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Special weather statement, Jul 21, 5:29 PM MDT, 3 hours 18 minutes before

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Special weather statement, Jul 21, 5:54 PM MDT, 2 hours 53 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
554 PM MDT SAT JUL 21 2012

WYZ102-107-108-220100-
EAST PLATTE COUNTY WY-GOSHEN COUNTY WY-NIOBRARA COUNTY WY-
554 PM MDT SAT JUL 21 2012

...SIGNIFICANT WEATHER ADVISORY FOR EXTREME EASTERN PLATTE...EXTREME
SOUTHEASTERN NIOBRARA AND NORTHERN GOSHEN COUNTIES UNTIL 700 PM
MDT...

AT 551 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR FORT LARAMIE NATIONAL HISTORIC SITE...OR 22
MILES NORTHEAST OF WHEATLAND...MOVING NORTHEAST AT 25 MPH.

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

THE STORM WILL CROSS HIGHWAY 26 JUST WEST OF FORT LARAMIE THROUGH
610 PM MDT.

THIS STORM WILL BE NEAR...
FORT LARAMIE AROUND 600 PM MDT.
HWY 85 AT DRY RAWHIDE CREEK AROUND 625 PM MDT.
PRAIRIE CENTER AROUND 655 PM MDT.

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

&&

LAT...LON 4249 10455 4262 10420 4227 10405 4217 10462
      4225 10468
TIME...MOT...LOC 2354Z 235DEG 23KT 4224 10457

RUBIN

Special weather statement, Jul 21, 6:13 PM MDT, 2 hours 34 minutes before

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Special weather statement, Jul 21, 6:39 PM MDT, 2 hours 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
639 PM MDT SAT JUL 21 2012

NEZ019>021-054-WYZ119-220130-
BANNER NE-EAST LARAMIE COUNTY WY-KIMBALL NE-MORRILL NE-SCOTTS BLUFF
NE-
639 PM MDT SAT JUL 21 2012

...THUNDERSTORM OUTFLOW BOUNDARY MOVING EASTWARD ACROSS BANNER AND
KIMBALL COUNTIES OF THE WESTERN NEBRASKA PANHANDLE...

AT 632 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A THUNDERSTORM OUTFLOW BOUNDARY ALONG A LINE EXTENDING FROM 11 MILES
NORTHWEST OF HARRISBURG TO 6 MILES SOUTHEAST OF ALBIN TO PINE BLUFFS
TO CARPENTER...AND MOVING EAST AT 30 MPH.

WIND GUSTS UP TO 45 MPH ARE EXPECTED AS THE OUTFLOW BOUNDARY PASSES
YOUR LOCATION...ALONG WITH A WIND SHIFT TO THE WEST AND NORTHWEST.
ALSO...TEMPERATURES WILL FALL INTO THE 80S AFTER THE OUTFLOW
BOUNDARY PASSAGE.

THE THUNDERSTORM OUTFLOW BOUNDARY WILL BE NEAR...
HARRISBURG AROUND 655 PM MDT.
BUSHNELL AROUND 700 PM MDT.
OLIVER CAMPGROUND AROUND 705 PM MDT.
OLIVER RESERVOIR AROUND 710 PM MDT.
KIMBALL AROUND 725 PM MDT.
KIMBALL AIRPORT...CHIMNEY ROCK STATE PARK...SOUTH BAYARD JUNCTION AND
BAYARD AROUND 730 PM MDT.

THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILE MARKERS 396 AND
402.

THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 1 AND
24.

&&

LAT...LON 4101 10436 4116 10417 4134 10405 4162 10392
      4176 10331 4143 10343 4123 10357 4105 10383
      4099 10421
TIME...MOT...LOC 0036Z 259DEG 25KT 4163 10388 4134 10400
          4116 10412 4103 10430

RUBIN

Special weather statement, Jul 21, 8:47 PM MDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 3:34 PM MDT	Special Weather Statement	CYS	Laramie	26 min
Jul 22, 3:39 PM MDT	Special Weather Statement	CYS	Albany	51 min
Jul 22, 3:44 PM MDT	Special Weather Statement	CYS	Niobrara	61 min
Jul 22, 3:56 PM MDT	Special Weather Statement	CYS	Goshen	49 min
Jul 22, 4:32 PM MDT	Special Weather Statement	CYS	Niobrara	43 min
Jul 21, 6:13 PM MDT	Special Weather Statement	CYS	Sioux	62 min
Jul 21, 6:18 PM MDT	Severe Thunderstorm Warning	CYS	Dawes, Sioux	57 min
Jul 21, 6:39 PM MDT	Special Weather Statement	CYS	Banner, Kimball	51 min
Jul 22, 5:43 PM MDT	Special Weather Statement	CYS	Sioux	32 min

Nearby

Special Weather Statements in Wyoming, 2012 Every special weather statement in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.