Alert archive / Nebraska / Wind Advisories in 2011

Wind Advisory 15, NWS Cheyenne, WY

April 29, 20117 counties in Nebraska

NWS Cheyenne, WY issued this wind advisory at Apr 29, 2011, 3:34 AM MDT for 7 counties in Nebraska. It took effect at Apr 29, 2011, 12:00 PM MDT. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Apr 29, 2011, 3:34 AM MDT (09:34 UTC)
In effect from: Apr 29, 2011, 12:00 PM MDT
Expired: Apr 29, 2011, 2:44 PM MDT
In force: 3 hr
Issued by: NWS Cheyenne, WY

Counties Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE

The radar

The Cheyenne radar (KCYS), 133 km from the middle of the area, began a volume at 09:35 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 (KDNR), launched 00:00Z, 9.6 hours before the alert went out and 210 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 5556 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 121 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.

766 
WWUS75 KCYS 290934
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
334 AM MDT FRI APR 29 2011

...STRONG WINDS WILL DEVELOP AROUND MIDDAY OVER THE WESTERN
NEBRASKA PANHANDLE AND CONTINUE THROUGH THE EARLY EVENING...

.A COLD FRONT WILL MOVE RAPIDLY ACROSS THE WESTERN NEBRASKA
PANHANDLE AROUND MIDDAY. BEHIND THE FRONT WILL BE STRONG NORTHWEST
WINDS WITH GUSTS UP TO 45 MPH. THE STRONG WINDS WILL CONTINUE 
THROUGH THE EARLY EVENING BEFORE GRADUALLY DIMINISHING.

NEZ003-019>021-054-055-096-292200-
/O.NEW.KCYS.WI.Y.0015.110429T1800Z-110430T0200Z/
BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
SOUTH SIOUX-
INCLUDING THE CITIES OF...ALLIANCE...SCOTTSBLUFF...GERING...
HARRISBURG...BRIDGEPORT...BAYARD...KIMBALL...SIDNEY...AGATE
334 AM MDT FRI APR 29 2011

...WIND ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING. 

* TIMING...FROM NOON TO 8 PM.  

* WINDS...NORTHWEST SUSTAINED AT 25 TO 35 MPH WITH GUSTS TO 45
  MPH.  

* IMPACTS...THE STRONG WINDS WILL CREATE TRAVEL PROBLEMS FOR THOSE
  WITH LIGHTWEIGHT OR HIGH PROFILE VEHICLES. IN ADDITION...THERE
  WILL BE LOCAL AREAS OF REDUCED VISIBILITIES IN BLOWING DUST. THE
  STRONG WINDS ALONG WITH FAIRLY LOW RELATIVE HUMIDITY VALUES MAY
  ALSO CAUSE ANY OUTDOOR FIRES TO SPREAD QUICKLY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

WEILAND

1 follow-up statement

471 
WWUS75 KCYS 292044
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
244 PM MDT FRI APR 29 2011

NEZ003-019>021-054-055-096-292145-
/O.CAN.KCYS.WI.Y.0015.000000T0000Z-110430T0200Z/
BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
SOUTH SIOUX-
INCLUDING THE CITIES OF...ALLIANCE...SCOTTSBLUFF...GERING...
HARRISBURG...BRIDGEPORT...BAYARD...KIMBALL...SIDNEY...AGATE
244 PM MDT FRI APR 29 2011

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS CANCELLED THE WIND
ADVISORY. 

WINDS OVER THE PANHANDLE HAVE DECREASED THIS AFTERNOON AND SHOULD
DECREASE FURTHER THIS EVENING. SOME LOCAL GUSTS AROUND 40 MPH ARE
STILL POSSIBLE FOR THE REST OF THE AFTERNOON.

GUSTY WINDS ARE EXPECTED TO DEVELOP AGAIN SATURDAY POSSIBLY
REQUIRING ANOTHER WIND ADVISORY.

$$

RE

Nearby

Wind Advisories in Nebraska, 2011 Every wind advisory in 2011

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.