Alert archive / Delaware / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 6, NWS Philadelphia/Mount Holly

February 24, 2016Kent County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Feb 24, 2016, 5:45 PM EST for Kent County, Sussex County, Delaware. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Feb 24, 2016, 5:45 PM EST (22:45 UTC)
Expired
Feb 24, 2016, 6:15 PM EST
In force
30 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Kent County, DE, Sussex County, DE

The radar

The Dover AFB radar (KDOX), 15 km from the middle of the area, began a volume at 22:44 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 24, 3:20 PM ESTTornado WatchSPC8 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.8 hours before the alert went out and 85 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 2016-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 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, Phillips Aaf/Abe, MD at 12:00Z on 2016-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 495 square meters per square second.19395878Sfc1 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
382 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
495 m²/s²
0-3 km storm-relative helicity
559 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

020 
WUUS51 KPHI 242245
SVRPHI
DEC001-005-242315-
/O.NEW.KPHI.SV.W.0006.160224T2245Z-160224T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
545 PM EST WED FEB 24 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL KENT COUNTY IN CENTRAL DELAWARE...
  CENTRAL SUSSEX COUNTY IN SOUTHERN DELAWARE...

* UNTIL 615 PM EST

* AT 544 PM EST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS
  STORM WAS LOCATED OVER MILFORD...OR 13 MILES NORTH OF GEORGETOWN...
  AND MOVING NORTH AT 65 MPH.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EST FOR SOUTHERN
DELAWARE.

LAT...LON 3873 7568 3931 7548 3928 7542 3925 7540
      3907 7541 3899 7532 3891 7531 3880 7518
      3878 7512 3860 7518
TIME...MOT...LOC 2244Z 200DEG 56KT 3888 7546 

$$

PO
2 follow-up statements
119 
WWUS51 KPHI 242300
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
600 PM EST WED FEB 24 2016

DEC001-005-242315-
/O.CON.KPHI.SV.W.0006.000000T0000Z-160224T2315Z/
KENT DE-SUSSEX DE-
600 PM EST WED FEB 24 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EST
FOR EASTERN KENT AND NORTHEASTERN SUSSEX COUNTIES...

AT 558 PM EST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS
LOCATED NEAR BOWERS...OR 9 MILES SOUTHEAST OF DOVER...MOVING NORTH AT
65 MPH. WIND GUSTS AROUND 50 MPH HAVE BEEN REPORTED WITH THIS STORM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. ALTHOUGH A
TORNADO IS NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY
AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A
BASEMENT OR SMALL INTERIOR ROOM.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EST FOR SOUTHERN
DELAWARE.

LAT...LON 3900 7548 3928 7542 3925 7540 3907 7541
      3899 7532 3891 7531 3880 7518 3878 7519
      3866 7526 3870 7544
TIME...MOT...LOC 2258Z 200DEG 56KT 3909 7536 

$$

MWG
144 
WWUS51 KPHI 242315
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
615 PM EST WED FEB 24 2016

DEC001-005-242324-
/O.EXP.KPHI.SV.W.0006.000000T0000Z-160224T2315Z/
KENT DE-SUSSEX DE-
615 PM EST WED FEB 24 2016

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN KENT AND NORTHEASTERN
SUSSEX COUNTIES WILL EXPIRE AT 615 PM EST...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3900 7548 3928 7542 3925 7540 3907 7541
      3899 7532 3891 7531 3880 7518 3878 7519
      3866 7526 3870 7544
TIME...MOT...LOC 2312Z 200DEG 56KT 3909 7536 

$$

MWG

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 3:19 AM ESTWind AdvisoryPHISussex22 hr
Feb 24, 3:56 PM ESTCoastal Flood AdvisoryPHINew Castle20 hr
Feb 24, 5:20 PM ESTSevere Thunderstorm WarningPHISussex25 min
Feb 24, 6:05 PM ESTSevere Thunderstorm WarningPHIKent40 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2016Every severe thunderstorm warning in 2016

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.