Alert archive / New Jersey / High Wind Watches in 2021
High Wind Watch 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this high wind watch at Apr 29, 2021, 3:32 AM EDT for 4 states. It took effect at Apr 30, 2021, 12:00 PM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Apr 29, 2021, 3:32 AM EDT (07:32 UTC)
- In effect from
- Apr 30, 2021, 12:00 PM EDT
- Expired
- Apr 29, 2021, 7:23 PM EDT
- In force
- Issued by
- NWS Philadelphia/Mount Holly
All 33 counties
Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 67 km from the middle of the area, began a volume at 07:33 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
Brookhaven, NY (KOKX), launched 00:00Z, 7.5 hours before the alert went out and 220 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
- 1815 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 311 m²/s²
- 0-3 km storm-relative helicity
- 286 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
698 WWUS71 KPHI 290732 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 332 AM EDT Thu Apr 29 2021 DEZ004-NJZ014-023>026-292130- /O.NEW.KPHI.HW.A.0001.210430T1600Z-210501T0900Z/ Delaware Beaches-Eastern Monmouth-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Including the cities of Rehoboth Beach, Sandy Hook, Cape May Court House, Ocean City, Atlantic City, and Long Beach Island 332 AM EDT Thu Apr 29 2021 ...HIGH WIND WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...West winds 25 to 35 mph with gusts of 50 to 60 mph possible. * WHERE...In New Jersey, Eastern Monmouth, Cape May, Atlantic Coastal Cape May, Coastal Atlantic and Coastal Ocean. In Delaware, Delaware Beaches. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The strongest wind gusts are most likely to occur Friday evening through the early morning hours Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ DEZ001>003-MDZ012-015-019-020-NJZ001-007>010-012-013-015>022-027- PAZ054-055-060>062-070-071-101>106-292130- /O.NEW.KPHI.HW.A.0001.210430T1600Z-210501T0900Z/ New Castle-Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline- Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic- Southeastern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton- Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Chestertown, Centreville, Easton, Denton, Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Wharton State Forest, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 332 AM EDT Thu Apr 29 2021 ...HIGH WIND WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Northwest winds 20 to 30 mph with gusts of 50 to 60 mph possible. * WHERE...Portions of central, northern, northwest and southern New Jersey, east central, northeast and southeast Pennsylvania, northeast Maryland and central, northern and southern Delaware. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The strongest wind gusts are most likely to occur Friday evening through the early morning hours Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ Staarmann
2 follow-up statements
306 WWUS71 KPHI 291949 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 349 PM EDT Thu Apr 29 2021 DEZ004-NJZ014-023>026-300930- /O.CON.KPHI.HW.A.0001.210430T1600Z-210501T0900Z/ Delaware Beaches-Eastern Monmouth-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Including the cities of Rehoboth Beach, Sandy Hook, Cape May Court House, Ocean City, Atlantic City, and Long Beach Island 349 PM EDT Thu Apr 29 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...West winds 25 to 35 mph with gusts of 50 to 60 mph possible. * WHERE...In New Jersey, Eastern Monmouth, Cape May, Atlantic Coastal Cape May, Coastal Atlantic and Coastal Ocean. In Delaware, Delaware Beaches. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The strongest wind gusts are most likely to occur Friday evening through the early morning hours Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ DEZ001>003-MDZ012-015-019-020-NJZ001-007>010-012-013-015>022-027- PAZ054-055-060>062-070-071-101>106-300930- /O.CON.KPHI.HW.A.0001.210430T1600Z-210501T0900Z/ New Castle-Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline- Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic- Southeastern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton- Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Chestertown, Centreville, Easton, Denton, Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Wharton State Forest, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 349 PM EDT Thu Apr 29 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Northwest winds 20 to 30 mph with gusts of 50 to 60 mph possible. * WHERE...Most of New Jersey, portions of eastern Pennsylvania, Delaware, and portions of eastern Maryland. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The strongest wind gusts are most likely to occur Friday evening through the early morning hours Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. && $$ JEO
811 WWUS71 KPHI 292323 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 723 PM EDT Thu Apr 29 2021 DEZ001>004-MDZ012-015-019-020-NJZ001-007>010-012>027-PAZ054-055- 060>062-070-071-101>106-301230- /O.UPG.KPHI.HW.A.0001.210430T1600Z-210501T0900Z/ /O.NEW.KPHI.HW.W.0002.210430T1800Z-210501T0800Z/ New Castle-Kent-Inland Sussex-Delaware Beaches-Kent MD- Queen Annes-Talbot-Caroline-Sussex-Warren-Morris-Hunterdon- Somerset-Middlesex-Western Monmouth-Eastern Monmouth-Mercer-Salem- Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic- Coastal Ocean-Southeastern Burlington-Carbon-Monroe-Berks-Lehigh- Northampton-Delaware-Philadelphia-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Rehoboth Beach, Chestertown, Centreville, Easton, Denton, Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Ocean City, Atlantic City, Long Beach Island, Wharton State Forest, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 723 PM EDT Thu Apr 29 2021 ...HIGH WIND WARNING IN EFFECT FROM 2 PM FRIDAY TO 4 AM EDT SATURDAY... * WHAT...Northwest winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Most of New Jersey, portions of eastern Pennsylvania, Delaware, and portions of eastern Maryland. * WHEN...From 2 PM Friday to 4 AM EDT Saturday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...The strongest wind gusts, of up to 60 mph, are most likely to occur from late Friday afternoon through the predawn hours Saturday. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. Use caution if you must drive. && $$ JO/MG/RD
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 8:05 PM EDT | Special Weather Statement | PHI | Sussex | 40 min |
| Apr 28, 8:17 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 43 min |
| Apr 28, 9:01 PM EDT | Special Weather Statement | PHI | Passaic | 29 min |
| Apr 29, 3:29 AM EDT | Small Craft Advisory | PHI | 27 hr | |
| Apr 29, 3:29 AM EDT | Storm Watch | PHI | 21 hr | |
| Apr 29, 3:47 PM EDT | Gale Warning | PHI | 23 hr | |
| Apr 29, 7:23 PM EDT | High Wind Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 26 hr |
| Apr 29, 7:45 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester, Salem | 45 min |
Nearby
High Wind Watches in New Jersey, 2021High Wind Watches in Pennsylvania, 2021High Wind Watches in Maryland, 2021Every high wind watch 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.