Alert archive / Nebraska / Wind Advisories in 2021

Wind Advisory 12, NWS Omaha, NE

December 27, 2021Cedar County, Knox County, Nebraska

NWS Omaha, NE issued this wind advisory at Dec 27, 2021, 3:09 AM CST for Cedar County, Knox County, Nebraska. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Dec 27, 2021, 3:09 AM CST (09:09 UTC)
Expired: Dec 27, 2021, 5:47 AM CST
In force: 3 hr
Issued by: NWS Omaha, NE

Counties Cedar County, NE, Knox County, NE

The radar

The Sioux Falls radar (KFSD), 128 km from the middle of the area, began a volume at 09:10 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

Omaha, NE (KOAX), launched 00:00Z, 9.2 hours before the alert went out and 175 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: 872 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 518 m²/s²
0-3 km storm-relative helicity: 422 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

351 
WWUS73 KOAX 270909
NPWOAX

URGENT - WEATHER MESSAGE
National Weather Service Omaha/Valley NE
309 AM CST Mon Dec 27 2021

NEZ011-012-271600-
/O.NEW.KOAX.WI.Y.0012.211227T0909Z-211227T1600Z/
Knox-Cedar-
Including the cities of Creighton, Bloomfield, Crofton, Wausa, 
Verdigre, Niobrara, Hartington, Laurel, Randolph, and Coleridge
309 AM CST Mon Dec 27 2021

...WIND ADVISORY IN EFFECT UNTIL 10 AM CST THIS MORNING...

* WHAT...West winds 25 to 35 mph with gusts up to 45 mph.

* WHERE...Knox and Cedar Counties.

* WHEN...Until 10 AM CST this morning.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

1 follow-up statement

871 
WWUS73 KOAX 271147
NPWOAX

URGENT - WEATHER MESSAGE
National Weather Service Omaha/Valley NE
547 AM CST Mon Dec 27 2021

NEZ011-012-271300-
/O.CAN.KOAX.WI.Y.0012.000000T0000Z-211227T1600Z/
Knox-Cedar-
Including the cities of Creighton, Bloomfield, Crofton, Wausa, 
Verdigre, Niobrara, Hartington, Laurel, Randolph, and Coleridge
547 AM CST Mon Dec 27 2021

...WIND ADVISORY IS CANCELLED...

The strongest northwest winds gusting over 45 mph have come to an
end, with wind speeds expected to gradually decrease through the
morning. Thus the wind advisory has been cancelled.

$$

Nearby

Wind Advisories in Nebraska, 2021 Every wind advisory in 2021

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.