Alert archive / Maryland / Freeze Warnings in 2021
Freeze Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this freeze warning at Apr 1, 2021, 3:14 AM EDT for Kent County, Sussex County, Delaware; 4 counties in Maryland. It took effect at Apr 2, 2021, 2:00 AM EDT. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 1, 2021, 3:14 AM EDT (07:14 UTC)
- In effect from
- Apr 2, 2021, 2:00 AM EDT
- Expired
- Apr 2, 2021, 8:46 AM EDT
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 37 km from the middle of the area, began a volume at 07:14 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 7.2 hours before the alert went out and 119 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
- 1 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 556 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
584 WWUS71 KPHI 010714 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 314 AM EDT Thu Apr 1 2021 DEZ002>004-MDZ012-015-019-020-012015- /O.UPG.KPHI.FZ.A.0001.210402T0600Z-210402T1400Z/ /O.NEW.KPHI.FZ.W.0001.210402T0600Z-210402T1400Z/ Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot- Caroline- Including the cities of Dover, Georgetown, Rehoboth Beach, Chestertown, Centreville, Easton, and Denton 314 AM EDT Thu Apr 1 2021 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 10 AM EDT FRIDAY... * WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...In Maryland, Kent MD, Queen Annes, Talbot and Caroline. In Delaware, Kent, Inland Sussex and Delaware Beaches. * WHEN...From 2 AM to 10 AM EDT Friday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. * ADDITIONAL DETAILS...Another widespread freeze is possible Friday night into Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Johnson
3 follow-up statements
470 WWUS71 KPHI 011947 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 347 PM EDT Thu Apr 1 2021 DEZ002>004-MDZ012-015-019-020-020900- /O.CON.KPHI.FZ.W.0001.210402T0600Z-210402T1400Z/ Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot- Caroline- Including the cities of Dover, Georgetown, Rehoboth Beach, Chestertown, Centreville, Easton, and Denton 347 PM EDT Thu Apr 1 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 10 AM EDT FRIDAY... * WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...In Maryland, Talbot, Kent MD, Queen Annes and Caroline. In Delaware, Delaware Beaches, Inland Sussex and Kent. * WHEN...From 2 AM to 10 AM EDT Friday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. * ADDITIONAL DETAILS...Another widespread freeze is possible Friday night into Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
696 WWUS71 KPHI 020704 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 304 AM EDT Fri Apr 2 2021 DEZ002>004-MDZ012-015-019-020-021400- /O.CON.KPHI.FZ.W.0001.000000T0000Z-210402T1400Z/ Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot- Caroline- Including the cities of Dover, Georgetown, Rehoboth Beach, Chestertown, Centreville, Easton, and Denton 304 AM EDT Fri Apr 2 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30. * WHERE...In Maryland, Talbot, Kent MD, Queen Annes and Caroline. In Delaware, Delaware Beaches, Inland Sussex and Kent. * WHEN...Until 10 AM EDT this morning. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. * ADDITIONAL DETAILS...Another widespread freeze is possible Friday night into Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Johnson
674 WWUS71 KPHI 021246 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 846 AM EDT Fri Apr 2 2021 DEZ002>004-MDZ012-015-019-020-030200- /O.CAN.KPHI.FZ.W.0001.000000T0000Z-210402T1400Z/ /O.NEW.KPHI.FZ.W.0002.210403T0300Z-210403T1300Z/ Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot- Caroline- Including the cities of Dover, Georgetown, Rehoboth Beach, Chestertown, Centreville, Easton, and Denton 846 AM EDT Fri Apr 2 2021 ...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 9 AM EDT SATURDAY... * WHAT...Sub-freezing temperatures as low as 27 expected. * WHERE...In Maryland, Kent MD, Queen Annes, Talbot and Caroline. In Delaware, Kent, Inland Sussex and Delaware Beaches. * WHEN...From 11 PM this evening to 9 AM EDT Saturday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
Nearby
Freeze Warnings in Maryland, 2021Freeze Warnings in Delaware, 2021Every freeze warning 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.