Alert archive / New Jersey / High Wind Watches in 2017

High Wind Watch 2, NWS Philadelphia/Mount Holly

February 12, 20174 states

NWS Philadelphia/Mount Holly issued this high wind watch at Feb 12, 2017, 3:55 AM EST for 4 states. It took effect at Feb 13, 2017, 12:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 12, 2017, 3:55 AM EST (08:55 UTC)
In effect from
Feb 13, 2017, 12:00 AM EST
Expired
Feb 12, 2017, 2:45 PM EST
In force
Issued by
NWS Philadelphia/Mount Holly
All 34 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil 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), 68 km from the middle of the area, began a volume at 08:56 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 8.9 hours before the alert went out and 219 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.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2017-02-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2017-02-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1933 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

366 
WWUS71 KPHI 120855
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
355 AM EST Sun Feb 12 2017

DEZ001>004-MDZ008-012-015-019-020-NJZ009-010-012>027-PAZ060-061-
070-071-101>106-122200-
/O.NEW.KPHI.HW.A.0002.170213T0500Z-170213T2200Z/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-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-Berks-Lehigh-Delaware-Philadelphia-
Western Chester-Eastern Chester-Western Montgomery-
Eastern Montgomery-Upper Bucks-Lower Bucks-
Including the cities of Wilmington, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
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, Reading, Allentown, Media, Philadelphia, 
Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, 
Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville,
and Doylestown
355 AM EST Sun Feb 12 2017

...HIGH WIND WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
AFTERNOON...

The National Weather Service in Mount Holly has issued a High
Wind Watch...which is in effect from late tonight through Monday
afternoon.

* WINDS...Northwest 25 to 35 mph with the potential for gusts up 
  to 60 mph.

* TIMING...The greatest potential for high winds will be late
  tonight through about midday Monday. The winds will gradually
  weaken Monday afternoon but strong gusts up to 50 mph are still
  possible. 

* IMPACTS...Potential for damaging winds to blow down trees and
  power lines. Scattered power outages are possible. Travel will
  likely become difficult...especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means there is the potential for a hazardous
high wind event. Sustained winds of at least 40 mph...or gusts of
58 mph or stronger may occur. Continue to monitor the latest
forecasts.

&&

$$

NJZ001-007-008-PAZ054-055-062-122200-
/O.NEW.KPHI.HW.A.0002.170213T0500Z-170213T2200Z/
Sussex-Warren-Morris-Carbon-Monroe-Northampton-
Including the cities of Newton, Washington, Morristown, 
Jim Thorpe, Stroudsburg, Bethlehem, and Easton
355 AM EST Sun Feb 12 2017

...HIGH WIND WATCH IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
AFTERNOON...

The National Weather Service in Mount Holly has issued a High
Wind Watch...which is in effect from late tonight through Monday
afternoon.

* WINDS...Northwest 25 to 35 mph with the potential for gusts up 
  to 60 mph.

* TIMING...The greatest potential for high winds will be late
  tonight through about midday Monday. The winds will gradually
  weaken Monday afternoon but strong gusts up to 50 mph are still
  possible. 

* IMPACTS...Potential for damaging winds to blow down trees and
  power lines. Additionally, the weight of the ice from the
  freezing rain that is expected today will make these structures
  particularly susceptible to damage from the high winds. Numerous
  power outages are possible. Travel will likely be difficult...
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means there is the potential for a hazardous
high wind event. Sustained winds of at least 40 mph...or gusts of
58 mph or stronger may occur. Continue to monitor the latest
forecasts.

&&

$$

JRK
1 follow-up statement
248 
WWUS71 KPHI 121945
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
245 PM EST Sun Feb 12 2017

DEZ001>004-MDZ008-012-015-019-020-NJZ013-014-016>027-131015-
/O.UPG.KPHI.HW.A.0002.170213T0500Z-170213T2200Z/
/O.NEW.KPHI.HW.W.0002.170213T0500Z-170213T2300Z/
New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD-
Queen Annes-Talbot-Caroline-Western Monmouth-Eastern Monmouth-
Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland-
Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic-
Coastal Ocean-Southeastern Burlington-
Including the cities of Wilmington, Dover, Georgetown, 
Rehoboth Beach, Elkton, Chestertown, Centreville, Easton, Denton,
Freehold, Sandy Hook, Pennsville, Glassboro, Camden, Cherry Hill,
Moorestown, Mount Holly, Jackson, Millville, Hammonton, 
Cape May Court House, Ocean City, Atlantic City, 
Long Beach Island, and Wharton State Forest
245 PM EST Sun Feb 12 2017

...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM EST
MONDAY...

The National Weather Service in Mount Holly has issued a High
Wind Warning...which is in effect from midnight tonight to 6 PM
EST Monday. The High Wind Watch is no longer in effect.

* WINDS...Northwest 25 to 35 mph with gusts 50 to 60 mph.

* TIMING...The greatest potential for high winds will be late
  tonight through about midday Monday. The winds will gradually
  weaken Monday afternoon but strong gusts are still possible into
  the evening hours.

* IMPACTS...Strong winds may blow down limbs...trees...and power 
  lines. Scattered power outages are expected. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph or more can lead to property damage.

&&

$$

NJZ001-007>010-PAZ054-055-061-062-131015-
/O.UPG.KPHI.HW.A.0002.170213T0500Z-170213T2200Z/
/O.NEW.KPHI.WI.Y.0006.170213T0500Z-170213T2300Z/
Sussex-Warren-Morris-Hunterdon-Somerset-Carbon-Monroe-Lehigh-
Northampton-
Including the cities of Newton, Washington, Morristown, 
Flemington, Somerville, Jim Thorpe, Stroudsburg, Allentown, 
Bethlehem, and Easton
245 PM EST Sun Feb 12 2017

...WIND ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM EST
MONDAY...

The National Weather Service in Mount Holly has issued a Wind
Advisory...which is in effect from midnight tonight to 6 PM EST
Monday. The High Wind Watch is no longer in effect.

* WINDS...Northwest 20 to 30 mph with gusts 40 to 50 mph.

* TIMING...The greatest potential for high winds will be late 
  tonight through about midday Monday. The winds will gradually
  weaken Monday afternoon but strong gusts are still possible into
  the evening hours.

* IMPACTS...Strong winds may blow down limbs...trees...and power
  lines. Scattered power outages are expected. Ice from the
  freezing rain and snow could exacerbate any problem with trees
  or power lines.

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.

&&

$$

NJZ012-015-PAZ060-070-071-101>106-131015-
/O.UPG.KPHI.HW.A.0002.170213T0500Z-170213T2200Z/
/O.NEW.KPHI.WI.Y.0006.170213T0500Z-170213T2300Z/
Middlesex-Mercer-Berks-Delaware-Philadelphia-Western Chester-
Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks-
Lower Bucks-
Including the cities of New Brunswick, Trenton, Reading, Media, 
Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, 
Collegeville, Pottstown, Norristown, Lansdale, Chalfont, 
Perkasie, Morrisville, and Doylestown
245 PM EST Sun Feb 12 2017

...WIND ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM EST
MONDAY...

The National Weather Service in Mount Holly has issued a Wind
Advisory...which is in effect from midnight tonight to 6 PM EST
Monday. The High Wind Watch is no longer in effect.

* WINDS...Northwest 20 to 30 mph with gusts 40 to 50 mph.

* TIMING...The greatest potential for high winds will be late
  tonight through about midday Monday. The winds will gradually
  weaken Monday afternoon but strong gusts are still possible into
  the evening hours.

* IMPACTS...Strong winds may blow down limbs...trees...and power 
  lines. Scattered power outages are expected. 

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.

&&

$$

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 12, 2:45 PM ESTWind AdvisoryPHIBerks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more27 hr
Feb 12, 12:44 AM ESTStorm WarningPHI41 hr
Feb 12, 2:45 PM ESTHigh Wind WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more22 hr

Nearby

High Wind Watches in New Jersey, 2017High Wind Watches in Pennsylvania, 2017High Wind Watches in Maryland, 2017Every high wind watch in 2017

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.