Alert archive / Maryland / Freeze Warnings in 2019
Freeze Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this freeze warning at Apr 1, 2019, 3:15 AM EDT for 4 counties in Maryland; Kent County, Sussex County, Delaware. It took effect at Apr 1, 2019, 11:00 PM EDT. It was in force for 9 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, 2019, 3:15 AM EDT (07:15 UTC)
- In effect from
- Apr 1, 2019, 11:00 PM EDT
- Expired
- Apr 2, 2019, 8:00 AM EDT
- In force
- 9 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 07:15 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, 7.3 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1727 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- -188 m²/s²
- 0-3 km storm-relative helicity
- -70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
489 WWUS71 KPHI 010715 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 315 AM EDT Mon Apr 1 2019 DEZ002>004-MDZ012-015-019-020-011915- /O.NEW.KPHI.FZ.W.0001.190402T0300Z-190402T1200Z/ Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot- Caroline- Including the cities of Dover, Georgetown, Rehoboth Beach, Chestertown, Centreville, Easton, and Denton 315 AM EDT Mon Apr 1 2019 ...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 8 AM EDT TUESDAY... The National Weather Service in Mount Holly has issued a Freeze Warning, which is in effect from 11 PM this evening to 8 AM EDT Tuesday. * TEMPERATURES...As low as 27. * TIMING...The lowest temperatures are expected after midnight tonight. * IMPACTS...Frost and freeze conditions may damage sensitive vegetation. Take steps now to protect tender plants from the cold. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. && $$ SFJ
2 follow-up statements
218 WWUS71 KPHI 011908 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 308 PM EDT Mon Apr 1 2019 DEZ002>004-MDZ012-015-019-020-021200- /O.CON.KPHI.FZ.W.0001.190402T0300Z-190402T1200Z/ Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot- Caroline- Including the cities of Dover, Georgetown, Rehoboth Beach, Chestertown, Centreville, Easton, and Denton 308 PM EDT Mon Apr 1 2019 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 8 AM EDT TUESDAY... * TEMPERATURES...Dropping into the upper 20s and lower 30s. * TIMING...The lowest temperatures will be between midnight and shortly after daybreak. * IMPACTS...Frost and freeze conditions may damage sensitive vegetation. Take steps now to protect tender plants and buds from the cold. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means that sub-freezing temperatures are imminent or highly likely. These conditions may damage sensitive vegetation. && $$ Iovino
267 WWUS71 KPHI 021158 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 758 AM EDT Tue Apr 2 2019 DEZ002>004-MDZ012-015-019-020-021300- /O.EXP.KPHI.FZ.W.0001.000000T0000Z-190402T1200Z/ Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot- Caroline- Including the cities of Dover, Georgetown, Rehoboth Beach, Chestertown, Centreville, Easton, and Denton 758 AM EDT Tue Apr 2 2019 ...FREEZE WARNING WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures will continue to rise above freezing this morning. As a result, the Freeze Warning will be allowed to expire at 8:00 AM. $$ Iovino
Nearby
Freeze Warnings in Maryland, 2019Freeze Warnings in Delaware, 2019Every freeze warning in 2019
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.