Alert archive / Maryland / Wind Advisories in 2015

Wind Advisory 4, NWS Philadelphia/Mount Holly

February 12, 20155 counties in Maryland; Kent County, New Castle County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this wind advisory at Feb 12, 2015, 5:25 PM EST for 5 counties in Maryland; Kent County, New Castle County, Sussex County, Delaware. It took effect at Feb 12, 2015, 6:00 PM EST. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Feb 12, 2015, 5:25 PM EST (22:25 UTC)
In effect from
Feb 12, 2015, 6:00 PM EST
Expired
Feb 13, 2015, 1:00 AM EST
In force
7 hr
Issued by
NWS Philadelphia/Mount Holly

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

The radar

The Dover AFB radar (KDOX), 45 km from the middle of the area, began a volume at 22:22 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.4 hours before the alert went out and 47 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, Phillips Aaf/Abe, MD at 12:00Z on 2015-02-12Temperature 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 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2015-02-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 square meters per square second.1939587897117136Sfc1 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
1058 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

025 
WWUS71 KPHI 122225
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
525 PM EST THU FEB 12 2015

DEZ001>004-MDZ008-012-015-019-020-130600-
/O.NEW.KPHI.WI.Y.0004.150212T2300Z-150213T0600Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON
525 PM EST THU FEB 12 2015

...WIND ADVISORY IN EFFECT UNTIL 1 AM EST FRIDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 1 AM EST FRIDAY.

* WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS TO 45 MPH.

* TIMING...THE STRONGEST WINDS ARE EXPECTED THIS EVENING.

* IMPACTS...THE STRONG WINDS COULD LEAD TO DIFFICULT TRAVEL
  CONDITIONS ESPECIALLY IN HIGH PROFILE VEHICLES AND ON BRIDGES.
  SCATTERED TREE AND POWER LINE DAMAGE IS ALSO POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD USE EXTRA CAUTION...ESPECIALLY THOSE IN HIGH
PROFILE VEHICLES. LIGHT-WEIGHT OUTDOOR OBJECTS SUCH AS PATIO
FURNITURE AND GARBAGE CANS SHOULD BE SECURED.

&&

$$
JRK
1 follow-up statement
214 
WWUS71 KPHI 130555
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1255 AM EST FRI FEB 13 2015

DEZ001>004-MDZ008-012-015-019-020-130700-
/O.EXP.KPHI.WI.Y.0004.000000T0000Z-150213T0600Z/
NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-
QUEEN ANNES-TALBOT-CAROLINE-
INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN...
REHOBOTH BEACH...ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...
DENTON
1255 AM EST FRI FEB 13 2015

...WIND ADVISORY WILL EXPIRE AT 1 AM EST EARLY THIS MORNING...

WIND GUSTS ARE EXPECTED TO REMAIN BELOW CRITERIA OVERNIGHT, SO THE
WIND ADVISORY WILL BE ALLOWED TO EXPIRE. IT WILL REMAIN GUSTY
WITH WIND GUSTS 30-40 MPH POSSIBLE.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 12, 3:54 AM ESTWind Chill AdvisoryPHICaroline, Cecil, Kent, Queen Anne's, Talbot32 hr
Feb 12, 5:30 AM ESTCoastal Flood AdvisoryPHICaroline, Cecil, Kent, Queen Anne's, Talbot8 hr

Nearby

Wind Advisories in Maryland, 2015Wind Advisories in Delaware, 2015Every wind advisory in 2015

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.