Alert archive / Nebraska / Wind Advisories in 2007

Wind Advisory 8, NWS Cheyenne, WY

April 10, 20077 counties in Nebraska

NWS Cheyenne, WY issued this wind advisory at Apr 10, 2007, 10:57 AM MDT for 7 counties in Nebraska. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Apr 10, 2007, 10:57 AM MDT (16:57 UTC)
Expired: Apr 10, 2007, 6:00 PM MDT
In force: 7 hr
Issued by: NWS Cheyenne, WY

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

The radar

The Cheyenne radar (KCYS), 141 km from the middle of the area, began a volume at 17:01 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 12:00Z, 5.0 hours before the alert went out and 213 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: 1151 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: 83 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.

000 
WWUS75 KCYS 101657
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
1057 AM MDT TUE APR 10 2007

...STRONG WINDS EXPECTED TODAY ACROSS THE WESTERN NEBRASKA
PANHANDLE...

.A TIGHT SURFACE PRESSURE GRADIENT COMBINED WITH STRONG WINDS
ALOFT AND DEEP UNIDIRECTIONAL NORTHWEST FLOW AT THE SURFACE AND
ALOFT WILL COMBINE TO PRODUCE STRONG NORTHWEST WINDS THROUGH THIS
AFTERNOON. THE STRONGEST WINDS WILL BE ACROSS SCOTTS BLUFF...MORRILL
...BANNER...KIMBALL AND CHEYENNE COUNTIES. PLEASE KEEP A FIRM GRIP
ON THE WHEEL AND SLOW DOWN ACCORDINGLY. YOUR NATIONAL WEATHER
SERVICE WANTS YOU TO ARRIVE ALIVE.

NEZ001>003-019>021-054-055-110000-
/O.NEW.KCYS.WI.Y.0008.070410T1657Z-070411T0000Z/
SIOUX-DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-
CHEYENNE-
INCLUDING THE CITIES OF...HARRISON...CHADRON...ALLIANCE...
SCOTTSBLUFF...GERING...HARRISBURG...BRIDGEPORT...BAYARD...
KIMBALL...SIDNEY
1057 AM MDT TUE APR 10 2007

...WIND ADVISORY IN EFFECT UNTIL 6 PM MDT THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 6 PM MDT THIS AFTERNOON. 

YOU CAN EXPECT NORTHWEST WINDS OF 25 TO 40 MPH WITH GUSTS TO 55
MPH.

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.

$$

RUBIN

1 follow-up statement

000 
WWUS75 KCYS 102353
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
553 PM MDT TUE APR 10 2007

...STRONG NORTHWEST WINDS WILL SLOWLY DIMINISH IN THE EVENING...

.THE SURFACE PRESSURE GRADIENT WILL BEGIN TO RELAX THROUGH THE
EARLY EVENING...ALLOWING FOR NORTHWEST WINDS TO DECREASE THROUGH
THE EVENING.

NEZ001>003-019>021-054-055-110100-
/O.EXP.KCYS.WI.Y.0008.000000T0000Z-070411T0000Z/
SIOUX-DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-
CHEYENNE-
INCLUDING THE CITIES OF...HARRISON...CHADRON...ALLIANCE...
SCOTTSBLUFF...GERING...HARRISBURG...BRIDGEPORT...BAYARD...
KIMBALL...SIDNEY
553 PM MDT TUE APR 10 2007

...WIND ADVISORY WILL EXPIRE AT 6 PM MDT THIS AFTERNOON...

THE WIND ADVISORY WILL EXPIRE AT 6 PM MDT THIS AFTERNOON. 

LATEST OBSERVATIONS SHOW NORTHWEST WINDS DECREASING WITHIN THE
PAST HOUR ACROSS MUCH OF THE NEBRASKA PANHANDLE. EXPECT WINDS TO
CONTINUE TO DIMINISH THROUGH THE EARLY EVENING...THUS THE WIND
ADVISORY HAS BEEN ALLOWED TO EXPIRE. EXPECT SUSTAINED WINDS OF 15
TO 20 MPH AND GUSTS UP TO 25 MPH OVERNIGHT. FOR THE NORTHERN
NEBRASKA PANHANDLE THAT RECEIVED SNOW...CAN EXPECT AREAS OF
BLOWING SNOW IN THE EVENING.

$$

Nearby

Wind Advisories in Nebraska, 2007 Every wind advisory in 2007

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.