Alert archive / Maine / Frost Advisories in 2021
Frost Advisory 4, NWS Caribou, ME
NWS Caribou, ME issued this frost advisory at May 29, 2021, 3:03 PM EDT for Aroostook County, Penobscot County, Piscataquis County, Maine. It took effect at May 30, 2021, 2:00 AM EDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- May 29, 2021, 3:03 PM EDT (19:03 UTC)
- In effect from
- May 30, 2021, 2:00 AM EDT
- Expired
- May 30, 2021, 6:18 AM EDT
- In force
- 4 hr
- Issued by
- NWS Caribou, ME
Counties Aroostook County, ME, Penobscot County, ME, Piscataquis County, ME
The radar
The Caribou radar (KCBW), 81 km from the middle of the area, began a volume at 19:01 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
Caribou, ME (KCAR), launched 12:00Z, 7.1 hours before the alert went out and 120 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
- 1494 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
126 WWUS71 KCAR 291903 NPWCAR URGENT - WEATHER MESSAGE National Weather Service Caribou ME 303 PM EDT Sat May 29 2021 MEZ002-005-006-010-300315- /O.NEW.KCAR.FR.Y.0004.210530T0600Z-210530T1100Z/ Northeast Aroostook-Northern Penobscot-Southeast Aroostook- Central Piscataquis- Including the cities of Presque Isle, Caribou, Van Buren, Mars Hill, Ashland, Millinocket, East Millinocket, Patten, Medway, Houlton, Hodgdon, Sherman, Smyrna Mills, Greenville, Monson, and Blanchard 303 PM EDT Sat May 29 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 7 AM EDT SUNDAY... * WHAT...Temperatures around 34 will result in frost formation. * WHERE...Northeast Aroostook, Northern Penobscot, Southeast Aroostook and Central Piscataquis Counties. * WHEN...From 2 AM to 7 AM EDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
4 follow-up statements
462 WWUS71 KCAR 300014 NPWCAR URGENT - WEATHER MESSAGE National Weather Service Caribou ME 814 PM EDT Sat May 29 2021 MEZ002-005-006-010-301100- /O.CON.KCAR.FR.Y.0004.210530T0600Z-210530T1100Z/ Northeast Aroostook-Northern Penobscot-Southeast Aroostook- Central Piscataquis- Including the cities of Presque Isle, Caribou, Van Buren, Mars Hill, Ashland, Millinocket, East Millinocket, Patten, Medway, Houlton, Hodgdon, Sherman, Smyrna Mills, Greenville, Monson, and Blanchard 814 PM EDT Sat May 29 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 7 AM EDT SUNDAY... * WHAT...Temperatures around 34 will result in frost formation. * WHERE...Northeast Aroostook, Northern Penobscot, Southeast Aroostook and Central Piscataquis Counties. * WHEN...From 2 AM to 7 AM EDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
118 WWUS71 KCAR 300417 NPWCAR URGENT - WEATHER MESSAGE National Weather Service Caribou ME 1217 AM EDT Sun May 30 2021 MEZ002-005-006-010-301100- /O.CON.KCAR.FR.Y.0004.210530T0600Z-210530T1100Z/ Northeast Aroostook-Northern Penobscot-Southeast Aroostook- Central Piscataquis- Including the cities of Presque Isle, Caribou, Van Buren, Mars Hill, Ashland, Millinocket, East Millinocket, Patten, Medway, Houlton, Hodgdon, Sherman, Smyrna Mills, Greenville, Monson, and Blanchard 1217 AM EDT Sun May 30 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 7 AM EDT THIS MORNING... * WHAT...Temperatures around 34 will result in frost formation. * WHERE...Northeast Aroostook, Central Piscataquis, Southeast Aroostook and Northern Penobscot Counties. * WHEN...Until 7 AM EDT 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. && $$ Sinko
351 WWUS71 KCAR 300713 NPWCAR URGENT - WEATHER MESSAGE National Weather Service Caribou ME 313 AM EDT Sun May 30 2021 MEZ002-005-006-010-301100- /O.CON.KCAR.FR.Y.0004.000000T0000Z-210530T1100Z/ Northeast Aroostook-Northern Penobscot-Southeast Aroostook- Central Piscataquis- Including the cities of Presque Isle, Caribou, Van Buren, Mars Hill, Ashland, Millinocket, East Millinocket, Patten, Medway, Houlton, Hodgdon, Sherman, Smyrna Mills, Greenville, Monson, and Blanchard 313 AM EDT Sun May 30 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 7 AM EDT THIS MORNING... * WHAT...Temperatures around 34 will result in frost formation. * WHERE...Northeast Aroostook, Central Piscataquis, Southeast Aroostook and Northern Penobscot Counties. * WHEN...Until 7 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Sinko
213 WWUS71 KCAR 301018 NPWCAR URGENT - WEATHER MESSAGE National Weather Service Caribou ME 618 AM EDT Sun May 30 2021 MEZ002-005-006-010-301130- /O.CAN.KCAR.FR.Y.0004.000000T0000Z-210530T1100Z/ Northeast Aroostook-Northern Penobscot-Southeast Aroostook- Central Piscataquis- Including the cities of Presque Isle, Caribou, Van Buren, Mars Hill, Ashland, Millinocket, East Millinocket, Patten, Medway, Houlton, Hodgdon, Sherman, Smyrna Mills, Greenville, Monson, and Blanchard 618 AM EDT Sun May 30 2021 ...FROST ADVISORY IS CANCELLED... Cloud cover early this morning has prevented temperatures in the southern portions of the advisory from falling to near freezing to create frost. Areas that did fall to near freezing creating patchy frost was in river valleys and other valleys in northern Penobscot & Aroostook counties. Temperatures are responding to the sunlight which is quickly melting any frost and therefore we will cancel the frost advisory. $$ Sinko
Nearby
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.