Alert archive / Kansas / Frost Advisories in 2021

Frost Advisory 4, NWS Goodland, KS

October 21, 202112 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska; Yuma County, Colorado

NWS Goodland, KS issued this frost advisory at Oct 21, 2021, 2:48 PM CDT for 12 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska; Yuma County, Colorado. It took effect at Oct 22, 2021, 1:00 AM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Oct 21, 2021, 2:48 PM CDT (19:48 UTC)
In effect from
Oct 22, 2021, 1:00 AM CDT
Expired
Oct 22, 2021, 9:00 AM CDT
In force
8 hr
Issued by
NWS Goodland, KS

Counties Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Logan County, KS, Norton County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Dundy County, NE, Hitchcock County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 59 km from the middle of the area, began a volume at 19:45 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, 7.8 hours before the alert went out and 183 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 2021-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2021-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.193958Sfc1 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
1197 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

711 
WWUS73 KGLD 211948
NPWGLD

URGENT - WEATHER MESSAGE
National Weather Service Goodland KS
148 PM MDT Thu Oct 21 2021

COZ090-KSZ001>004-013>016-027>029-042-NEZ079>081-220600-
/O.NEW.KGLD.FR.Y.0004.211022T0600Z-211022T1400Z/
Yuma-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas-Sheridan-
Graham-Wallace-Logan-Gove-Wichita-Dundy-Hitchcock-Red Willow-
Including the cities of Yuma, Wray, St. Francis, Bird City, 
Atwood, Oberlin, Norton, Goodland, Colby, Hoxie, Hill City, 
Sharon Springs, Oakley, Quinter, Grinnell, Grainfield, Leoti, 
Benkelman, Culbertson, Trenton, Stratton Ne, Palisade, and McCook
148 PM MDT Thu Oct 21 2021 /248 PM CDT Thu Oct 21 2021/

...FROST ADVISORY IN EFFECT FROM MIDNIGHT MDT /1 AM CDT/ TONIGHT
TO 8 AM MDT /9 AM CDT/ FRIDAY...

* WHAT...Temperatures as low as 33 will result in frost 
  formation.

* WHERE...Portions of northwest and west central Kansas, 
  northeast Colorado and southwest Nebraska.

* WHEN...From midnight MDT /1 AM CDT/ tonight to 8 AM MDT /9 AM 
  CDT/ Friday.

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

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. 

&&

$$
2 follow-up statements
476 
WWUS73 KGLD 220202
NPWGLD

URGENT - WEATHER MESSAGE
National Weather Service Goodland KS
802 PM MDT Thu Oct 21 2021

COZ090-KSZ001>004-013>016-027>029-042-NEZ079>081-221400-
/O.CON.KGLD.FR.Y.0004.211022T0600Z-211022T1400Z/
Yuma-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas-Sheridan-
Graham-Wallace-Logan-Gove-Wichita-Dundy-Hitchcock-Red Willow-
Including the cities of Yuma, Wray, St. Francis, Bird City, 
Atwood, Oberlin, Norton, Goodland, Colby, Hoxie, Hill City, 
Sharon Springs, Oakley, Quinter, Grinnell, Grainfield, Leoti, 
Benkelman, Culbertson, Trenton, Stratton Ne, Palisade, and McCook
802 PM MDT Thu Oct 21 2021 /902 PM CDT Thu Oct 21 2021/

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT MDT /1 AM CDT/
TONIGHT TO 8 AM MDT /9 AM CDT/ FRIDAY...

* WHAT...Temperatures as low as 33 will result in frost 
  formation.

* WHERE...Portions of northwest and west central Kansas, 
  northeast Colorado and southwest Nebraska.

* WHEN...From midnight MDT /1 AM CDT/ tonight to 8 AM MDT /9 AM 
  CDT/ Friday.

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

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. 

&&

$$
713 
WWUS73 KGLD 221401
NPWGLD

URGENT - WEATHER MESSAGE
National Weather Service Goodland KS
801 AM MDT Fri Oct 22 2021

COZ090-KSZ001>004-013>016-027>029-042-NEZ079>081-221515-
/O.EXP.KGLD.FR.Y.0004.000000T0000Z-211022T1400Z/
Yuma-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas-Sheridan-
Graham-Wallace-Logan-Gove-Wichita-Dundy-Hitchcock-Red Willow-
Including the cities of Yuma, Wray, St. Francis, Bird City, 
Atwood, Oberlin, Norton, Goodland, Colby, Hoxie, Hill City, 
Sharon Springs, Oakley, Quinter, Grinnell, Grainfield, Leoti, 
Benkelman, Culbertson, Trenton, Stratton Ne, Palisade, and McCook
801 AM MDT Fri Oct 22 2021 /901 AM CDT Fri Oct 22 2021/

...FROST ADVISORY HAS EXPIRED...

Temperatures across the Advisory area have improved since sunrise
allowing for expiration.

$$

JN

Nearby

Frost Advisories in Kansas, 2021Frost Advisories in Nebraska, 2021Frost Advisories in Colorado, 2021Every frost 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.