Alert archive / Nebraska / Frost Advisories in 2021
Frost Advisory 2, NWS Omaha, NE
NWS Omaha, NE issued this frost advisory at May 11, 2021, 3:03 PM CDT for 5 counties in Nebraska. It took effect at May 12, 2021, 3:00 AM CDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- May 11, 2021, 3:03 PM CDT (20:03 UTC)
- In effect from
- May 12, 2021, 3:00 AM CDT
- Expired
- May 12, 2021, 9:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Omaha, NE
Counties Boone County, NE, Madison County, NE, Platte County, NE, Stanton County, NE, Wayne County, NE
The radar
The Omaha radar (KOAX), 112 km from the middle of the area, began a volume at 20:02 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
Omaha, NE (KOAX), launched 12:00Z, 8.1 hours before the alert went out and 112 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
- 1534 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
400 WWUS73 KOAX 112003 NPWOAX URGENT - WEATHER MESSAGE National Weather Service Omaha/Valley NE 303 PM CDT Tue May 11 2021 NEZ018-030>032-042-120415- /O.NEW.KOAX.FR.Y.0002.210512T0800Z-210512T1400Z/ Wayne-Boone-Madison-Stanton-Platte- Including the cities of Wayne, Albion, St. Edward, Norfolk, Stanton, and Columbus 303 PM CDT Tue May 11 2021 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM CDT WEDNESDAY... * WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...Wayne, Boone, Madison, Stanton and Platte Counties. * WHEN...From 3 AM to 9 AM CDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps this evening to protect tender plants from the cold. && $$
3 follow-up statements
106 WWUS73 KOAX 120208 NPWOAX URGENT - WEATHER MESSAGE National Weather Service Omaha/Valley NE 908 PM CDT Tue May 11 2021 NEZ018-030>032-042-121015- /O.CON.KOAX.FR.Y.0002.210512T0800Z-210512T1400Z/ Wayne-Boone-Madison-Stanton-Platte- Including the cities of Wayne, Albion, St. Edward, Norfolk, Stanton, and Columbus 908 PM CDT Tue May 11 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM CDT WEDNESDAY... * WHAT...Temperatures as low as 38 will result in frost formation. * WHERE...Stanton, Boone, Madison, Wayne and Platte Counties. * WHEN...From 3 AM to 9 AM CDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
368 WWUS73 KOAX 121030 NPWOAX URGENT - WEATHER MESSAGE National Weather Service Omaha/Valley NE 530 AM CDT Wed May 12 2021 NEZ018-030>032-042-121400- /O.CON.KOAX.FR.Y.0002.000000T0000Z-210512T1400Z/ Wayne-Boone-Madison-Stanton-Platte- Including the cities of Wayne, Albion, St. Edward, Norfolk, Stanton, and Columbus 530 AM CDT Wed May 12 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Temperatures as low as the lower 30s will result in frost formation. * WHERE...Stanton, Boone, Madison, Wayne and Platte Counties. * WHEN...until 9 AM CDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
968 WWUS73 KOAX 121351 NPWOAX URGENT - WEATHER MESSAGE National Weather Service Omaha/Valley NE 851 AM CDT Wed May 12 2021 NEZ018-030>032-042-121500- /O.EXP.KOAX.FR.Y.0002.000000T0000Z-210512T1400Z/ Wayne-Boone-Madison-Stanton-Platte- Including the cities of Wayne, Albion, St. Edward, Norfolk, Stanton, and Columbus 851 AM CDT Wed May 12 2021 ...FROST ADVISORY WILL EXPIRE AT 9 AM CDT THIS MORNING... Temperatures will continue to warm the rest of the morning and frost is no longer a threat. $$
Nearby
Frost Advisories in Nebraska, 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.