Alert archive / Delaware / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 101, NWS Philadelphia/Mount Holly

July 27, 2005Salem County, New Jersey; Kent County, New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 27, 2005, 7:37 PM EDT for Salem County, New Jersey; Kent County, New Castle County, Delaware. It was in force for 53 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 27, 2005, 7:37 PM EDT (23:37 UTC)
Expired: Jul 27, 2005, 8:30 PM EDT
In force: 53 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

Counties Kent County, DE, New Castle County, DE, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 76 km from the middle of the area, began a volume at 23:40 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.

What was reported inside it

Time	Report	Where	Remark
Jul 27, 7:40 PM EDT	TSTM WND DMG	Pennsville, NJ	TREES DOWN.
Jul 27, 7:45 PM EDT	TSTM WND DMG	Pennsville, NJ	TREES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 27, 1:50 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.6 hours before the alert went out and 50 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: 1105 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1506 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 29 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.

000 
WUUS51 KPHI 272338
SVRPHI
DEC001-003-NJC033-280030-
/O.NEW.KPHI.SV.W.0101.050727T2337Z-050728T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
737 PM EDT WED JUL 27 2005

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KENT COUNTY IN CENTRAL DELAWARE
  THIS INCLUDES THE CITY OF DOVER
  NEW CASTLE COUNTY IN NORTHERN DELAWARE
  THIS INCLUDES THE CITIES OF...WILMINGTON...NEWARK
  SALEM COUNTY IN SOUTHERN NEW JERSEY

* UNTIL 830 PM EDT

* AT 736 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR DELAWARE CITY...
  OR ABOUT 8 MILES SOUTHEAST OF NEWARK...AND MOVING EAST AT 25 MPH.  
  ADDITIONAL SEVERE THUNDERSTORMS WERE LOCATED ACROSS EASTERN MARYLAND...
  ALSO MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NEW CASTLE...WILMINGTON MANOR...DOVER AND RISING SUN BY 745 PM EDT
  PENNSVILLE...WILMINGTON...TALLEYVILLE AND FREDERICA BY 750 PM EDT
  SALEM AND CARNEYS POINT BY 755 PM EDT

WIND GUSTS TO 70 MPH...HEAVY RAIN AND HAIL ARE POSSIBLE WITH THESE STORMS.

LAT...LON 3967 7579 3887 7570 3895 7533 3943 7545
      3954 7524 3979 7543 3981 7542 3984 7557

$$

NIERENBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 4:23 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	52 min
Jul 27, 4:58 PM EDT	Severe Thunderstorm Warning	PHI	Warren	47 min
Jul 27, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris	44 min
Jul 27, 6:13 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Somerset	62 min
Jul 27, 6:44 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	61 min
Jul 27, 7:05 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	40 min
Jul 27, 7:20 PM EDT	Special Marine Warning	PHI		85 min
Jul 27, 7:54 PM EDT	Special Marine Warning	PHI		96 min
Jul 27, 7:04 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	41 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2005 Severe Thunderstorm Warnings in New Jersey, 2005 Every severe thunderstorm warning in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.