Alert archive / Maryland / Wind Advisories in 2018
Wind Advisory 9, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this wind advisory at Oct 20, 2018, 3:40 PM EDT for Kent County, Sussex County, Delaware; Cape May County, New Jersey; Caroline County, Queen Anne's County, Talbot County, Maryland. It took effect at Oct 21, 2018, 5:00 AM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Oct 20, 2018, 3:40 PM EDT (19:40 UTC)
- In effect from
- Oct 21, 2018, 5:00 AM EDT
- Expired
- Oct 21, 2018, 11:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Queen Anne's County, MD, Talbot County, MD, Cape May County, NJ
The radar
The Dover AFB radar (KDOX), 20 km from the middle of the area, began a volume at 19:42 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 12:00Z, 7.7 hours before the alert went out and 112 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
- 718 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 212 m²/s²
- 0-3 km storm-relative helicity
- 212 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
260 WWUS71 KPHI 201940 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 340 PM EDT Sat Oct 20 2018 DEZ002>004-MDZ015-019-020-NJZ023-024-211000- /O.NEW.KPHI.WI.Y.0009.181021T0900Z-181021T1500Z/ Kent-Inland Sussex-Delaware Beaches-Queen Annes-Talbot-Caroline- Cape May-Atlantic Coastal Cape May- Including the cities of Dover, Georgetown, Rehoboth Beach, Centreville, Easton, Denton, Cape May Court House, and Ocean City 340 PM EDT Sat Oct 20 2018 ...WIND ADVISORY IN EFFECT FROM 5 AM TO 11 AM EDT SUNDAY... The National Weather Service in Mount Holly has issued a Wind Advisory, which is in effect from 5 AM to 11 AM EDT Sunday. * WINDS...Northwest 20 to 30 mph with gusts up to 50 mph. * TIMING...Winds will increase late tonight with peak winds expected just after daybreak through Sunday morning. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that very windy conditions are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. Light-weight outdoor objects such as patio furniture and garbage cans should be secured. && $$ Meola
2 follow-up statements
312 WWUS71 KPHI 210707 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 307 AM EDT Sun Oct 21 2018 DEZ001-MDZ008-NJZ012-013-015>022-027-PAZ060-061-070-071-101>106- 211915- /O.NEW.KPHI.FR.Y.0004.181022T0400Z-181022T1300Z/ New Castle-Cecil-Middlesex-Western Monmouth-Mercer-Salem- Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Southeastern Burlington-Berks-Lehigh-Delaware- Philadelphia-Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Wilmington, Elkton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Wharton State Forest, Reading, Allentown, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 307 AM EDT Sun Oct 21 2018 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... The National Weather Service in Mount Holly has issued a Frost Advisory, which is in effect from midnight tonight to 9 AM EDT Monday. * TEMPERATURES...In the lower to middle 30s. * TIMING...From midnight to 9 am Monday. * IMPACTS...Frost may damage sensitive vegetation. Take steps now to protect tender plants from the cold. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. && $$ DEZ002>004-MDZ015-019-020-NJZ023-024-211500- /O.CON.KPHI.WI.Y.0009.181021T0900Z-181021T1500Z/ Kent-Inland Sussex-Delaware Beaches-Queen Annes-Talbot-Caroline- Cape May-Atlantic Coastal Cape May- Including the cities of Dover, Georgetown, Rehoboth Beach, Centreville, Easton, Denton, Cape May Court House, and Ocean City 307 AM EDT Sun Oct 21 2018 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS MORNING... * WINDS...Northwest 15 to 25 mph with gusts up to 45 mph. * TIMING...Winds will increase through daybreak with peak winds expected from early to mid morning. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down, and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that very windy conditions are expected. Winds this strong can make driving difficult...especially for high profile vehicles. Use extra caution. Light-weight outdoor objects such as patio furniture and garbage cans should be secured. && $$ CMS
371 WWUS71 KPHI 211457 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 1057 AM EDT Sun Oct 21 2018 DEZ002>004-MDZ015-019-020-NJZ023-024-211600- /O.EXP.KPHI.WI.Y.0009.000000T0000Z-181021T1500Z/ Kent-Inland Sussex-Delaware Beaches-Queen Annes-Talbot-Caroline- Cape May-Atlantic Coastal Cape May- Including the cities of Dover, Georgetown, Rehoboth Beach, Centreville, Easton, Denton, Cape May Court House, and Ocean City 1057 AM EDT Sun Oct 21 2018 ...WIND ADVISORY WILL EXPIRE AT 11 AM EDT THIS MORNING... Winds will continue to gusts 35 to 45 mph at times today, but widespread advisory level are no longer expected. $$ DEZ001-MDZ008-NJZ012-013-015>022-027-PAZ060-061-070-071-101>106- 220300- /O.CON.KPHI.FR.Y.0004.181022T0400Z-181022T1300Z/ New Castle-Cecil-Middlesex-Western Monmouth-Mercer-Salem- Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Southeastern Burlington-Berks-Lehigh-Delaware- Philadelphia-Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Wilmington, Elkton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Wharton State Forest, Reading, Allentown, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 1057 AM EDT Sun Oct 21 2018 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... * TEMPERATURES...In the lower to middle 30s. * TIMING...From midnight to 9 am Monday. * IMPACTS...Frost may damage sensitive vegetation. Take steps now to protect tender plants from the cold. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. && $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 20, 6:10 AM EDT | Gale Warning | PHI | 36 hr |
Nearby
Wind Advisories in Maryland, 2018Wind Advisories in Delaware, 2018Wind Advisories in New Jersey, 2018Every wind advisory in 2018
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.