Alert archive / Missouri / Frost Advisories in 2021
Frost Advisory 2, NWS Kansas City, MO
NWS Kansas City, MO issued this frost advisory at Apr 10, 2021, 3:02 PM CDT for 7 counties in Missouri; Atchison County, Doniphan County, Leavenworth County, Kansas. It took effect at Apr 11, 2021, 1:00 AM CDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 10, 2021, 3:02 PM CDT (20:02 UTC)
- In effect from
- Apr 11, 2021, 1:00 AM CDT
- Expired
- Apr 11, 2021, 8:00 AM CDT
- In force
- 7 hr
- Issued by
- NWS Kansas City, MO
Counties Atchison County, KS, Doniphan County, KS, Leavenworth County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Holt County, MO, Nodaway County, MO, Platte County, MO, Worth County, MO
The radar
The Pleasant Hill radar (KEAX), 135 km from the middle of the area, began a volume at 20:03 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 12:00Z, 8.0 hours before the alert went out and 114 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
- 523 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- -31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
184 WWUS73 KEAX 102002 NPWEAX URGENT - WEATHER MESSAGE National Weather Service Kansas City/Pleasant Hill MO 302 PM CDT Sat Apr 10 2021 KSZ025-102-103-MOZ001>003-011-012-020-028-110415- /O.NEW.KEAX.FR.Y.0002.210411T0600Z-210411T1300Z/ Atchison KS-Doniphan-Leavenworth-Atchison MO-Nodaway-Worth-Holt- Andrew-Buchanan-Platte- Including the cities of Atchison, Wathena, Elwood, Troy, Highland, Fort Leavenworth, Leavenworth, Lansing, Tarkio, Rock Port, Fairfax, Maryville, Grant City, Mound City, Oregon, Maitland, Forest City, Craig, Savannah, Country Club Villa, St. Joseph Airport, St. Joseph, Parkville, Platte City, Riverside, Weatherby Lake, and Weston 302 PM CDT Sat Apr 10 2021 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT SUNDAY... * WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...In Kansas, Atchison KS, Doniphan and Leavenworth Counties. In Missouri, Atchison MO, Nodaway, Worth, Holt, Andrew, Buchanan and Platte Counties. * WHEN...From 1 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. && $$
2 follow-up statements
999 WWUS73 KEAX 110155 NPWEAX URGENT - WEATHER MESSAGE National Weather Service Kansas City/Pleasant Hill MO 855 PM CDT Sat Apr 10 2021 KSZ025-102-103-MOZ001>003-011-012-020-028-111300- /O.CON.KEAX.FR.Y.0002.210411T0600Z-210411T1300Z/ Atchison KS-Doniphan-Leavenworth-Atchison MO-Nodaway-Worth-Holt- Andrew-Buchanan-Platte- Including the cities of Atchison, Wathena, Elwood, Troy, Highland, Fort Leavenworth, Leavenworth, Lansing, Tarkio, Rock Port, Fairfax, Maryville, Grant City, Mound City, Oregon, Maitland, Forest City, Craig, Savannah, Country Club Villa, St. Joseph Airport, St. Joseph, Parkville, Platte City, Riverside, Weatherby Lake, and Weston 855 PM CDT Sat Apr 10 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM CDT SUNDAY... * WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...In Kansas, Atchison KS, Leavenworth and Doniphan Counties. In Missouri, Atchison MO, Nodaway, Worth, Buchanan, Andrew, Holt and Platte Counties. * WHEN...From 1 AM to 8 AM CDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
410 WWUS73 KEAX 111255 NPWEAX URGENT - WEATHER MESSAGE National Weather Service Kansas City/Pleasant Hill MO 755 AM CDT Sun Apr 11 2021 KSZ025-102-103-MOZ001>003-011-012-020-028-111400- /O.EXP.KEAX.FR.Y.0002.000000T0000Z-210411T1300Z/ Atchison KS-Doniphan-Leavenworth-Atchison MO-Nodaway-Worth-Holt- Andrew-Buchanan-Platte- Including the cities of Atchison, Wathena, Elwood, Troy, Highland, Fort Leavenworth, Leavenworth, Lansing, Tarkio, Rock Port, Fairfax, Maryville, Grant City, Mound City, Oregon, Maitland, Forest City, Craig, Savannah, Country Club Villa, St. Joseph Airport, St. Joseph, Parkville, Platte City, Riverside, Weatherby Lake, and Weston 755 AM CDT Sun Apr 11 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING... Temperatures are rising into the lower 40s this morning, and will continue to rise into the 60s and 70s through the rest of the day. $$
The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 8:04 PM CDT | River Flood Warning | EAX | Cooper, Saline | 5 days |
| Apr 9, 8:04 PM CDT | River Flood Warning | EAX | Cass, Henry, Johnson | 62 hr |
| Apr 9, 8:04 PM CDT | River Flood Warning | EAX | Cooper | 58 hr |
| Apr 9, 8:04 PM CDT | River Flood Warning | EAX | Johnson, Pettis | 53 hr |
| Apr 9, 8:04 PM CDT | River Flood Warning | EAX | Cooper | 65 hr |
| Apr 9, 8:04 PM CDT | River Flood Warning | EAX | Carroll | 46 hr |
| Apr 9, 8:04 PM CDT | River Flood Warning | EAX | Carroll, Chariton, Linn, Livingston | 3 days |
| Apr 9, 8:04 PM CDT | River Flood Warning | EAX | Chariton, Macon | 41 hr |
| Apr 9, 8:04 PM CDT | River Flood Warning | EAX | Bates, Cass, Henry | 14 hr |
| Apr 10, 5:44 AM CDT | River Flood Warning | EAX | Clay, Ray | 21 hr |
| Apr 10, 10:06 AM CDT | River Flood Warning | EAX | Howard | 25 hr |
| Apr 10, 10:06 AM CDT | River Flood Warning | EAX | Ray | 51 hr |
Nearby
Frost Advisories in Missouri, 2021Frost 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.