Alert archive / Nebraska / Special Weather Statements in 2012

Special Weather Statement, NWS Cheyenne, WY

July 3, 2012Kimball County, Nebraska

NWS Cheyenne, WY issued this special weather statement at Jul 3, 2012, 4:45 PM MDT for Kimball County, Nebraska. It was in force for 60 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 3, 2012, 4:45 PM MDT (22:45 UTC)
Expired: Jul 3, 2012, 5:45 PM MDT
In force: 60 min
Issued by: NWS Cheyenne, WY

County Kimball County, NE

The radar

The Cheyenne radar (KCYS), 76 km from the middle of the area, began a volume at 22:48 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 (KUNR), launched 12:00Z, 10.8 hours before the alert went out and 329 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: 941 J/kg
Mixed-layer CIN: -335 J/kg
Mixed-layer LCL: 2017 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 31 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 3, 3:56 PM MDT, 49 minutes earlier.

Area forecast discussion, Jul 3, 3:56 PM MDT, 49 minutes before

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Hazardous weather outlook, Jul 3, 9:03 AM MDT, 7 hours 42 minutes before

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In the hours before

Special weather statement, Jul 3, 4:45 PM MDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
445 PM MDT TUE JUL 3 2012

NEZ054-WYZ119-032345-
EAST LARAMIE COUNTY WY-KIMBALL NE-
445 PM MDT TUE JUL 3 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LARAMIE AND WESTERN
KIMBALL COUNTIES UNTIL 545 PM MDT...

AT 439 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES NORTHWEST OF PANORAMA POINT...OR 25 MILES
SOUTHWEST OF KIMBALL...MOVING NORTHEAST AT 10 MPH.

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...
  OLIVER CAMPGROUND...
  OLIVER RESERVOIR...
  BUSHNELL...

THIS INCLUDES INTERSTATE 80 IN WYOMING BETWEEN MILE MARKERS 398 AND
402.

THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 1 AND
15.

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 4131 10370 4100 10386 4105 10420 4137 10402
TIME...MOT...LOC 2244Z 299DEG 4KT 4107 10409

MSW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 8:14 PM MDT	Red Flag Warning	CYS		24 hr
Jul 2, 6:14 PM MDT	Areal Flood Advisory	CYS	Banner, Cheyenne, Kimball, Morrill	3 hr
Jul 2, 6:29 PM MDT	Special Weather Statement	CYS	Cheyenne	46 min
Jul 2, 7:43 PM MDT	Special Weather Statement	CYS	Cheyenne	62 min
Jul 3, 5:27 PM MDT	Special Weather Statement	CYS	Kimball	48 min
Jul 3, 5:40 PM MDT	Special Weather Statement	CYS	Cheyenne	50 min

Nearby

Special Weather Statements in Nebraska, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.