Alert archive / Nebraska / Frost Advisories in 2021
Frost Advisory 2, NWS North Platte, NE
NWS North Platte, NE issued this frost advisory at May 11, 2021, 2:49 PM CDT for 5 counties in Nebraska. It took effect at May 12, 2021, 3:00 AM CDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- May 11, 2021, 2:49 PM CDT (19:49 UTC)
- In effect from
- May 12, 2021, 3:00 AM CDT
- Expired
- May 12, 2021, 8:00 AM CDT
- In force
- 5 hr
- Issued by
- NWS North Platte, NE
Counties Blaine County, NE, Custer County, NE, Garfield County, NE, Loup County, NE, Wheeler County, NE
The radar
The North Platte radar (KLNX), 104 km from the middle of the area, began a volume at 19:48 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.8 hours before the alert went out and 130 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
- 1944 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
933 WWUS73 KLBF 111949 NPWLBF URGENT - WEATHER MESSAGE National Weather Service North Platte NE 249 PM CDT Tue May 11 2021 NEZ026>029-038-120400- /O.NEW.KLBF.FR.Y.0002.210512T0800Z-210512T1300Z/ Blaine-Loup-Garfield-Wheeler-Custer- Including the cities of Dunning, Purdum, Brewster, Taylor, Burwell, Bartlett, Ericson, and Broken Bow 249 PM CDT Tue May 11 2021 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM CDT WEDNESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Blaine, Loup, Garfield, Wheeler and Custer Counties. * WHEN...From 3 AM to 8 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. && $$ Brown
2 follow-up statements
178 WWUS73 KLBF 120947 NPWLBF URGENT - WEATHER MESSAGE National Weather Service North Platte NE 447 AM CDT Wed May 12 2021 NEZ026>029-038-121300- /O.CON.KLBF.FR.Y.0002.000000T0000Z-210512T1300Z/ Blaine-Loup-Garfield-Wheeler-Custer- Including the cities of Dunning, Purdum, Brewster, Taylor, Burwell, Bartlett, Ericson, and Broken Bow 447 AM CDT Wed May 12 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Blaine, Loup, Garfield, Wheeler and Custer Counties. * WHEN...From 3 AM to 8 AM CDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
672 WWUS73 KLBF 121258 NPWLBF URGENT - WEATHER MESSAGE National Weather Service North Platte NE 758 AM CDT Wed May 12 2021 NEZ026>029-038-121400- /O.EXP.KLBF.FR.Y.0002.000000T0000Z-210512T1300Z/ Blaine-Loup-Garfield-Wheeler-Custer- Including the cities of Dunning, Purdum, Brewster, Taylor, Burwell, Bartlett, Ericson, and Broken Bow 758 AM CDT Wed May 12 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING... Temperatures have risen above freezing across the advisory area and the threat for frost has ended. $$
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.