Alert archive / Delaware / Wind Advisories in 2019

Wind Advisory 9, NWS Philadelphia/Mount Holly

October 20, 2019Sussex County, Delaware; Cape May County, New Jersey

NWS Philadelphia/Mount Holly issued this wind advisory at Oct 20, 2019, 6:28 PM EDT for Sussex County, Delaware; Cape May County, New Jersey. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Oct 20, 2019, 6:28 PM EDT (22:28 UTC)
Expired: Oct 20, 2019, 8:51 PM EDT
In force: 2 hr
Issued by: NWS Philadelphia/Mount Holly

Counties Sussex County, DE, Cape May County, NJ

The radar

The Dover AFB radar (KDOX), 31 km from the middle of the area, began a volume at 22:29 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, 10.5 hours before the alert went out and 109 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 737 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

385 
WWUS71 KPHI 202228
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
628 PM EDT Sun Oct 20 2019

DEZ003-004-NJZ023-024-210300-
/O.NEW.KPHI.WI.Y.0009.191020T2228Z-191021T0300Z/
Inland Sussex-Delaware Beaches-Cape May-Atlantic Coastal Cape May-
Including the cities of Georgetown, Rehoboth Beach, 
Cape May Court House, and Ocean City
628 PM EDT Sun Oct 20 2019

...WIND ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING...

* WHAT...Northeast winds 20 to 30 mph with gusts up to 45 mph.

* WHERE...In New Jersey, Cape May and Atlantic Coastal Cape May 
  Counties. In Delaware, Inland Sussex and Delaware Beaches 
  Counties.

* WHEN...Until 11 PM EDT this evening.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...The strongest winds will be right along the
  Atlantic coast and along the shores of the Delaware Bay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

Johnson

1 follow-up statement

380 
WWUS71 KPHI 210051
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
851 PM EDT Sun Oct 20 2019

DEZ003-004-NJZ023-024-210200-
/O.CAN.KPHI.WI.Y.0009.000000T0000Z-191021T0300Z/
Inland Sussex-Delaware Beaches-Cape May-Atlantic Coastal Cape May-
Including the cities of Georgetown, Rehoboth Beach, 
Cape May Court House, and Ocean City
851 PM EDT Sun Oct 20 2019

...WIND ADVISORY IS CANCELLED...

Winds should continue to diminish. Therefore, the wind advisory
has been cancelled.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 20, 6:13 PM EDT	Special Weather Statement	PHI	Sussex	62 min

Nearby

Wind Advisories in Delaware, 2019 Wind Advisories in New Jersey, 2019 Every wind advisory 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.