Alert archive / Kansas / Frost Advisories in 2021

Frost Advisory 2, NWS Dodge City, KS

October 20, 20216 counties in Kansas

NWS Dodge City, KS issued this frost advisory at Oct 20, 2021, 3:11 AM CDT for 6 counties in Kansas. It took effect at Oct 21, 2021, 4:00 AM CDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Oct 20, 2021, 3:11 AM CDT (08:11 UTC)
In effect from
Oct 21, 2021, 4:00 AM CDT
Expired
Oct 21, 2021, 9:00 AM CDT
In force
5 hr
Issued by
NWS Dodge City, KS

Counties Ellis County, KS, Finney County, KS, Lane County, KS, Ness County, KS, Scott County, KS, Trego County, KS

The radar

The Dodge City radar (KDDC), 90 km from the middle of the area, began a volume at 08:10 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

Dodge City, (KDDC), launched 00:00Z, 8.2 hours before the alert went out and 91 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, Dodge City, at 00:00Z on 2021-10-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 joules per kilogram.LCLLFCEL10008507005003002001001 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, Dodge City, at 00:00Z on 2021-10-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 232 square meters per square second.19395878Sfc1 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
11 J/kg
Mixed-layer CIN
-177 J/kg
Mixed-layer LCL
2059 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
232 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

956 
WWUS73 KDDC 200811
NPWDDC

URGENT - WEATHER MESSAGE
National Weather Service Dodge City KS
311 AM CDT Wed Oct 20 2021

KSZ030-031-043>045-063-202100-
/O.NEW.KDDC.FR.Y.0002.211021T0900Z-211021T1400Z/
Trego-Ellis-Scott-Lane-Ness-Finney-
Including the cities of Wakeeney, Pfeifer, Hays, Scott City, 
Scott State Lake, Dighton, Ness City, and Garden City
311 AM CDT Wed Oct 20 2021

...FROST ADVISORY IN EFFECT FROM 4 AM TO 9 AM CDT THURSDAY...

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

* WHERE...Trego, Ellis, Scott, Lane, Ness and Finney Counties.

* WHEN...From 4 AM to 9 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.

&&

$$
2 follow-up statements
141 
WWUS73 KDDC 201548
NPWDDC

URGENT - WEATHER MESSAGE
National Weather Service Dodge City KS
1048 AM CDT Wed Oct 20 2021

KSZ030-031-043>045-063-211400-
/O.CON.KDDC.FR.Y.0002.211021T0900Z-211021T1400Z/
Trego-Ellis-Scott-Lane-Ness-Finney-
Including the cities of Wakeeney, Pfeifer, Hays, Scott City, 
Scott State Lake, Dighton, Ness City, and Garden City
1048 AM CDT Wed Oct 20 2021

...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 9 AM CDT
THURSDAY...

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

* WHERE...Ness, Lane, Finney, Scott, Ellis and Trego Counties.

* WHEN...From 4 AM to 9 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.

&&

$$
550 
WWUS73 KDDC 211332
NPWDDC

URGENT - WEATHER MESSAGE
National Weather Service Dodge City KS
832 AM CDT Thu Oct 21 2021

KSZ030-031-043>045-063-211445-
/O.EXP.KDDC.FR.Y.0002.000000T0000Z-211021T1400Z/
Trego-Ellis-Scott-Lane-Ness-Finney-
Including the cities of Wakeeney, Pfeifer, Hays, Scott City, 
Scott State Lake, Dighton, Ness City, and Garden City
832 AM CDT Thu Oct 21 2021

...FROST ADVISORY WILL EXPIRE AT 9 AM CDT THIS MORNING...

$$

Nearby

Frost Advisories in Kansas, 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.