Alert archive / Kansas / Frost Advisories in 2021
Frost Advisory 6, NWS Topeka, KS
NWS Topeka, KS issued this frost advisory at Oct 21, 2021, 3:11 AM CDT for 6 counties in Kansas. It took effect at Oct 22, 2021, 3:00 AM CDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Oct 21, 2021, 3:11 AM CDT (08:11 UTC)
- In effect from
- Oct 22, 2021, 3:00 AM CDT
- Expired
- Oct 22, 2021, 9:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Topeka, KS
Counties Brown County, KS, Cloud County, KS, Marshall County, KS, Nemaha County, KS, Republic County, KS, Washington County, KS
The radar
The Topeka radar (KTWX), 95 km from the middle of the area, began a volume at 08:15 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
Topeka, KS (KTOP), launched 00:00Z, 8.2 hours before the alert went out and 126 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1694 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -69 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
015 WWUS73 KTOP 210811 NPWTOP URGENT - WEATHER MESSAGE National Weather Service Topeka KS 311 AM CDT Thu Oct 21 2021 KSZ008>012-020-220000- /O.NEW.KTOP.FR.Y.0006.211022T0800Z-211022T1400Z/ Republic-Washington-Marshall-Nemaha-Brown-Cloud- Including the cities of Belleville, Washington, Hanover, Clifton, Linn, Greenleaf, Marysville, Blue Rapids, Frankfort, Sabetha, Seneca, Hiawatha, Horton, and Concordia 311 AM CDT Thu Oct 21 2021 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM CDT FRIDAY... * WHAT...Temperatures as low as 34 degrees will result in frost formation. * WHERE...Republic, Washington, Marshall, Nemaha, Brown and Cloud Counties. * WHEN...From 3 AM to 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. && $$
3 follow-up statements
107 WWUS73 KTOP 211941 NPWTOP URGENT - WEATHER MESSAGE National Weather Service Topeka KS 241 PM CDT Thu Oct 21 2021 KSZ008>012-020-220930- /O.CON.KTOP.FR.Y.0006.211022T0800Z-211022T1400Z/ Republic-Washington-Marshall-Nemaha-Brown-Cloud- Including the cities of Belleville, Washington, Hanover, Clifton, Linn, Greenleaf, Marysville, Blue Rapids, Frankfort, Sabetha, Seneca, Hiawatha, Horton, and Concordia 241 PM CDT Thu Oct 21 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM CDT FRIDAY... * WHAT...Temperatures falling into the middle 30s will combine with light winds and clear skies to allow frost to form. * WHERE...Republic, Washington, Marshall, Nemaha, Brown and Cloud Counties. * WHEN...From 3 AM to 9 AM CDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
281 WWUS73 KTOP 220900 NPWTOP URGENT - WEATHER MESSAGE National Weather Service Topeka KS 400 AM CDT Fri Oct 22 2021 KSZ008>012-020-221400- /O.CON.KTOP.FR.Y.0006.000000T0000Z-211022T1400Z/ Republic-Washington-Marshall-Nemaha-Brown-Cloud- Including the cities of Belleville, Washington, Hanover, Clifton, Linn, Greenleaf, Marysville, Blue Rapids, Frankfort, Sabetha, Seneca, Hiawatha, Horton, and Concordia 400 AM CDT Fri Oct 22 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Nemaha, Marshall, Brown, Republic, Washington and Cloud Counties. * WHEN...Until 9 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. && $$
304 WWUS73 KTOP 221345 NPWTOP URGENT - WEATHER MESSAGE National Weather Service Topeka KS 845 AM CDT Fri Oct 22 2021 KSZ008>012-020-221445- /O.EXP.KTOP.FR.Y.0006.000000T0000Z-211022T1400Z/ Republic-Washington-Marshall-Nemaha-Brown-Cloud- Including the cities of Belleville, Washington, Hanover, Clifton, Linn, Greenleaf, Marysville, Blue Rapids, Frankfort, Sabetha, Seneca, Hiawatha, Horton, and Concordia 845 AM CDT Fri Oct 22 2021 ...FROST ADVISORY WILL EXPIRE AT 9 AM CDT THIS MORNING... Full sunshine and warming temperatures will bring an end to this morning's frost. $$
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.