Alert archive / Nebraska / Frost Advisories in 2021
Frost Advisory 1, NWS North Platte, NE
NWS North Platte, NE issued this frost advisory at May 10, 2021, 2:21 PM CDT for 10 counties in Nebraska. It took effect at May 11, 2021, 4:00 AM CDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- May 10, 2021, 2:21 PM CDT (19:21 UTC)
- In effect from
- May 11, 2021, 4:00 AM CDT
- Expired
- May 11, 2021, 8:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS North Platte, NE
Counties Blaine County, NE, Boyd County, NE, Brown County, NE, Cherry County, NE, Garfield County, NE, Holt County, NE, Keya Paha County, NE, Loup County, NE, Rock County, NE, Wheeler County, NE
The radar
The North Platte radar (KLNX), 100 km from the middle of the area, began a volume at 19:21 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, 7.4 hours before the alert went out and 163 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
- 976 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
468 WWUS73 KLBF 101921 NPWLBF URGENT - WEATHER MESSAGE National Weather Service North Platte NE 221 PM CDT Mon May 10 2021 NEZ005>010-026>029-111300- /O.NEW.KLBF.FR.Y.0001.210511T0900Z-210511T1300Z/ Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Blaine-Loup- Garfield-Wheeler- Including the cities of Valentine, Springview, Spencer, Butte, Lynch, Ainsworth, Bassett, Rose, Oneill, Atkinson, Dunning, Purdum, Brewster, Taylor, Burwell, Bartlett, and Ericson 221 PM CDT Mon May 10 2021 /121 PM MDT Mon May 10 2021/ ...FROST ADVISORY IN EFFECT FROM 4 AM CDT /3 AM MDT/ TO 8 AM CDT /7 AM MDT/ TUESDAY... * WHAT...Temperatures as low as 33 will result in possible frost formation. * WHERE...Eastern Cherry, Keya Paha, Boyd, Brown, Rock, Holt, Blaine, Loup, Garfield and Wheeler Counties. * WHEN...From 4 AM CDT /3 AM MDT/ to 8 AM CDT /7 AM MDT/ Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CLB
2 follow-up statements
486 WWUS73 KLBF 110758 NPWLBF URGENT - WEATHER MESSAGE National Weather Service North Platte NE 258 AM CDT Tue May 11 2021 NEZ005>010-026>029-111300- /O.CON.KLBF.FR.Y.0001.210511T0900Z-210511T1300Z/ Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Blaine-Loup- Garfield-Wheeler- Including the cities of Valentine, Springview, Spencer, Butte, Lynch, Ainsworth, Bassett, Rose, Oneill, Atkinson, Dunning, Purdum, Brewster, Taylor, Burwell, Bartlett, and Ericson 258 AM CDT Tue May 11 2021 /158 AM MDT Tue May 11 2021/ ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT /7 AM MDT/ THIS MORNING... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Holt, Rock, Brown, Loup, Blaine, Wheeler, Garfield, Boyd, Keya Paha and Eastern Cherry Counties. * WHEN...Until 8 AM CDT /7 AM MDT/ this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Roberg
886 WWUS73 KLBF 111300 NPWLBF URGENT - WEATHER MESSAGE National Weather Service North Platte NE 800 AM CDT Tue May 11 2021 NEZ005>010-026>029-111400- /O.EXP.KLBF.FR.Y.0001.000000T0000Z-210511T1300Z/ Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Blaine-Loup- Garfield-Wheeler- Including the cities of Valentine, Springview, Spencer, Butte, Lynch, Ainsworth, Bassett, Rose, Oneill, Atkinson, Dunning, Purdum, Brewster, Taylor, Burwell, Bartlett, and Ericson 800 AM CDT Tue May 11 2021 /700 AM MDT Tue May 11 2021/ ...FROST ADVISORY WILL EXPIRE AT 8 AM CDT /7 AM MDT/ THIS MORNING... Temperatures have risen above freezing across the advisory area and the threat for frost has ended. $$ Brown
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.