Alert archive / Nebraska / Freeze Warnings in 2021

Freeze Warning 1, NWS North Platte, NE

October 13, 202122 counties in Nebraska

NWS North Platte, NE issued this freeze warning at Oct 13, 2021, 12:30 PM MDT for 22 counties in Nebraska. It took effect at Oct 14, 2021, 12:00 AM MDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 13, 2021, 12:30 PM MDT (18:30 UTC)
In effect from
Oct 14, 2021, 12:00 AM MDT
Expired
Oct 14, 2021, 9:00 AM MDT
In force
9 hr
Issued by
NWS North Platte, NE
All 22 counties

Arthur County, NE, Blaine County, NE, Brown County, NE, Chase County, NE, Cherry County, NE, Custer County, NE, Deuel County, NE, Frontier County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hooker County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Perkins County, NE, Rock County, NE, Sheridan County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 46 km from the middle of the area, began a volume at 18:31 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 6.5 hours before the alert went out and 62 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2021-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2021-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -71 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
751 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-71 m²/s²
0-3 km storm-relative helicity
-29 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

888 
WWUS73 KLBF 131830
NPWLBF

URGENT - WEATHER MESSAGE
National Weather Service North Platte NE
130 PM CDT Wed Oct 13 2021

NEZ004-005-022>025-035>038-056>059-069-094-132300-
/O.NEW.KLBF.FZ.W.0001.211014T0600Z-211014T1500Z/
/O.CON.KLBF.HW.W.0003.000000T0000Z-211013T2300Z/
Sheridan-Eastern Cherry-Garden-Grant-Hooker-Thomas-Arthur-
McPherson-Logan-Custer-Deuel-Keith-Perkins-Lincoln-Chase-
Western Cherry-
Including the cities of Gordon, Rushville, Valentine, Oshkosh, 
Lewellen, Hyannis, Mullen, Thedford, Halsey, Arthur, Tryon, 
Ringgold, Stapleton, Broken Bow, Chappell, Big Springs, Ogallala,
Paxton, Grant, North Platte, Champion, Enders, Imperial, Wauneta,
Cody, Eli, Merriman, and Kilgore
130 PM CDT Wed Oct 13 2021 /1230 PM MDT Wed Oct 13 2021/

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 PM CDT /5 PM MDT/
THIS EVENING...
...FREEZE WARNING IN EFFECT FROM 1 AM CDT /MIDNIGHT MDT/ TO 10 AM
CDT /9 AM MDT/ THURSDAY...

* WHAT...For the High Wind Warning, west winds 30 to 40 mph with 
  gusts up to 60 mph. For the Freeze Warning, sub-freezing 
  temperatures as low as 27 expected.

* WHERE...Portions of central, north central, panhandle, 
  southwest and west central Nebraska.

* WHEN...For the High Wind Warning, until 6 PM CDT /5 PM MDT/ 
  this evening. For the Freeze Warning, from 1 AM CDT /midnight 
  MDT/ to 10 AM CDT /9 AM MDT/ Thursday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles. Frost and 
  freeze conditions will kill crops, other sensitive vegetation 
  and possibly damage unprotected outdoor plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

NEZ006-008-009-026-027-070-071-132300-
/O.NEW.KLBF.FZ.W.0001.211014T0600Z-211014T1500Z/
Keya Paha-Brown-Rock-Blaine-Loup-Hayes-Frontier-
Including the cities of Springview, Ainsworth, Bassett, Rose, 
Dunning, Purdum, Brewster, Taylor, Hayes Center, Curtis, Eustis, 
and Maywood
130 PM CDT Wed Oct 13 2021

...FREEZE WARNING IN EFFECT FROM 1 AM TO 10 AM CDT THURSDAY...

* WHAT...Sub-freezing temperatures as low as 31 expected.

* WHERE...Keya Paha, Brown, Rock, Blaine, Loup, Hayes and 
  Frontier Counties.

* WHEN...From 1 AM to 10 AM CDT Thursday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

NEZ007-010-028-029-132300-
/O.NEW.KLBF.FR.Y.0003.211014T0600Z-211014T1500Z/
Boyd-Holt-Garfield-Wheeler-
Including the cities of Spencer, Butte, Lynch, Oneill, Atkinson, 
Burwell, Bartlett, and Ericson
130 PM CDT Wed Oct 13 2021

...FROST ADVISORY IN EFFECT FROM 1 AM TO 10 AM CDT THURSDAY...

* WHAT...Temperatures as low as 34 will result in frost 
  formation.

* WHERE...Boyd, Holt, Garfield and Wheeler Counties.

* WHEN...From 1 AM to 10 AM CDT Thursday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
1 follow-up statement
856 
WWUS73 KLBF 140814
NPWLBF

URGENT - WEATHER MESSAGE
National Weather Service North Platte NE
314 AM CDT Thu Oct 14 2021

NEZ004>006-008-009-022>027-035>038-056>059-069>071-094-141500-
/O.CON.KLBF.FZ.W.0001.000000T0000Z-211014T1500Z/
Sheridan-Eastern Cherry-Keya Paha-Brown-Rock-Garden-Grant-Hooker-
Thomas-Blaine-Loup-Arthur-McPherson-Logan-Custer-Deuel-Keith-
Perkins-Lincoln-Chase-Hayes-Frontier-Western Cherry-
Including the cities of Gordon, Rushville, Valentine, Springview,
Ainsworth, Bassett, Rose, Oshkosh, Lewellen, Hyannis, Mullen, 
Thedford, Halsey, Dunning, Purdum, Brewster, Taylor, Arthur, 
Tryon, Ringgold, Stapleton, Broken Bow, Chappell, Big Springs, 
Ogallala, Paxton, Grant, North Platte, Champion, Enders, 
Imperial, Wauneta, Hayes Center, Curtis, Eustis, Maywood, Cody, 
Eli, Merriman, and Kilgore
314 AM CDT Thu Oct 14 2021 /214 AM MDT Thu Oct 14 2021/

...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM CDT /9 AM MDT/
THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 28.

* WHERE...The eastern Nebraska panhandle, southwest and west 
  central Nebraska.

* WHEN...Until 10 AM CDT /9 AM MDT/ this morning.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

NEZ007-010-028-029-141500-
/O.CON.KLBF.FR.Y.0003.000000T0000Z-211014T1500Z/
Boyd-Holt-Garfield-Wheeler-
Including the cities of Spencer, Butte, Lynch, Oneill, Atkinson, 
Burwell, Bartlett, and Ericson
314 AM CDT Thu Oct 14 2021

...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT THIS
MORNING...

* WHAT...Temperatures as low as 34 will result in frost 
  formation.

* WHERE...Portions of north central Nebraska.

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

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 12, 6:02 PM MDTSevere Thunderstorm Warning Considerable damage threatLBFChase, Perkins58 min
Oct 12, 6:54 PM MDTSpecial Weather StatementLBFChase, Keith, Perkins51 min
Oct 13, 12:45 AM MDTHigh Wind WarningLBFArthur, Chase, Cherry, Custer, Deuel, Garden and 9 more16 hr
Oct 13, 12:30 PM MDTFrost AdvisoryLBFBoyd, Garfield, Holt, Wheeler21 hr

Nearby

Freeze Warnings in Nebraska, 2021Every freeze warning 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.