Alert archive / Kansas / Frost Advisories in 2021
Frost Advisory 4, NWS Topeka, KS
NWS Topeka, KS issued this frost advisory at Apr 17, 2021, 3:25 AM CDT for 9 counties in Kansas. It took effect at Apr 18, 2021, 3:00 AM CDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Apr 17, 2021, 3:25 AM CDT (08:25 UTC)
- In effect from
- Apr 18, 2021, 3:00 AM CDT
- Expired
- Apr 18, 2021, 8:00 AM CDT
- In force
- 5 hr
- Issued by
- NWS Topeka, KS
Counties Clay County, KS, Cloud County, KS, Dickinson County, KS, Geary County, KS, Marshall County, KS, Ottawa County, KS, Republic County, KS, Riley County, KS, Washington County, KS
The radar
The Topeka radar (KTWX), 91 km from the middle of the area, began a volume at 08:27 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, 8.4 hours before the alert went out and 137 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
- 602 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
962 WWUS73 KTOP 170825 NPWTOP URGENT - WEATHER MESSAGE National Weather Service Topeka KS 325 AM CDT Sat Apr 17 2021 KSZ008>010-020>022-034>036-172100- /O.NEW.KTOP.FR.Y.0004.210418T0800Z-210418T1300Z/ Republic-Washington-Marshall-Cloud-Clay-Riley-Ottawa-Dickinson- Geary- Including the cities of Belleville, Washington, Hanover, Clifton, Linn, Greenleaf, Marysville, Blue Rapids, Frankfort, Concordia, Clay Center, Manhattan, Minneapolis, Bennington, Abilene, Herington, and Junction City 325 AM CDT Sat Apr 17 2021 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM CDT SUNDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Republic, Washington, Marshall, Cloud, Clay, Riley, Ottawa, Dickinson and Geary Counties. * WHEN...From 3 AM to 8 AM CDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps today to protect tender plants from the cold. && $$ Wolters
2 follow-up statements
759 WWUS73 KTOP 172003 NPWTOP URGENT - WEATHER MESSAGE National Weather Service Topeka KS 303 PM CDT Sat Apr 17 2021 KSZ008>010-020>022-034>036-181300- /O.CON.KTOP.FR.Y.0004.210418T0800Z-210418T1300Z/ Republic-Washington-Marshall-Cloud-Clay-Riley-Ottawa-Dickinson- Geary- Including the cities of Belleville, Washington, Hanover, Clifton, Linn, Greenleaf, Marysville, Blue Rapids, Frankfort, Concordia, Clay Center, Manhattan, Minneapolis, Bennington, Abilene, Herington, and Junction City 303 PM CDT Sat Apr 17 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM CDT SUNDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Republic, Washington, Marshall, Cloud, Clay, Riley, Ottawa, Dickinson and Geary Counties. * WHEN...From 3 AM to 8 AM CDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
185 WWUS73 KTOP 180833 NPWTOP URGENT - WEATHER MESSAGE National Weather Service Topeka KS 333 AM CDT Sun Apr 18 2021 KSZ008>010-020>022-034>036-181645- /O.NEW.KTOP.FZ.A.0001.210420T0300Z-210420T1500Z/ /O.NEW.KTOP.FZ.A.0002.210421T0200Z-210421T1500Z/ /O.CON.KTOP.FR.Y.0004.000000T0000Z-210418T1300Z/ Republic-Washington-Marshall-Cloud-Clay-Riley-Ottawa-Dickinson- Geary- Including the cities of Belleville, Washington, Hanover, Clifton, Linn, Greenleaf, Marysville, Blue Rapids, Frankfort, Concordia, Clay Center, Manhattan, Minneapolis, Bennington, Abilene, Herington, and Junction City 333 AM CDT Sun Apr 18 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... ...FREEZE WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY MORNING... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... The National Weather Service in Topeka has issued a Freeze Watch, which is in effect from Monday evening through Tuesday morning. A Freeze Watch has also been issued from Tuesday evening through Wednesday morning. * WHAT...Temperatures as low as 33 this morning will result in frost formation. Freezing temperatures around 29 are forecast for Tuesday morning and a killing freeze with temperatures in the middle 20s for Wednesday morning. * WHERE...Republic, Washington, Marshall, Cloud, Clay, Riley, Ottawa, Dickinson and Geary Counties. * WHEN...From 3 AM to 8 AM CDT Sunday. * TEMPERATURE...Freezing temperatures could last for as much as 8 hours Tuesday night and Wednesday morning. * Impacts...The cold weather could kill sensitive outdoor vegetation if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. A Freeze Watch means sub-freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$ KSZ011-012-023-024-026-037>040-054>056-058-059-181645- /O.NEW.KTOP.FZ.A.0001.210420T0300Z-210420T1500Z/ /O.NEW.KTOP.FZ.A.0002.210421T0200Z-210421T1500Z/ Nemaha-Brown-Pottawatomie-Jackson-Jefferson-Morris-Wabaunsee- Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson- Including the cities of Sabetha, Seneca, Hiawatha, Horton, Wamego, St. Marys, Holton, Valley Falls, Oskaloosa, Perry, McLouth, Grantville, Meriden, Nortonville, Council Grove, Alma, Eskridge, Maple Hill, Alta Vista, McFarland, Harveyville, Paxico, Topeka, Lawrence, Emporia, Osage City, Carbondale, Lyndon, Burlingame, Overbrook, Ottawa, Burlington, Lebo, and Garnett 333 AM CDT Sun Apr 18 2021 ...FREEZE WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY MORNING... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... The National Weather Service in Topeka has issued a Freeze Watch, which is in effect from Monday evening through Tuesday morning. A Freeze Watch has also been issued from Tuesday evening through Wednesday morning. * TEMPERATURE...Lows Tuesday morning are expected to be around 31 degrees. A killing freeze is forecast for Wednesday morning with readings expected to fall into the middle 20s and temperatures below freezing for as much as 8 hours. * IMPACTS...The cold weather could kill sensitive outdoor vegetation if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Watch means sub-freezing temperatures are possible. These conditions could kill crops and other sensitive vegetation. && $$ Wolters
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.