Alert archive / Delaware / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 141, NWS Philadelphia/Mount Holly

July 5, 2006Kent County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 5, 2006, 2:42 PM EDT for Kent County, Delaware. It was in force for 48 min. 1 report 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 5, 2006, 2:42 PM EDT (18:42 UTC)
Expired: Jul 5, 2006, 3:30 PM EDT
In force: 48 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

County Kent County, DE

The radar

The Dover AFB radar (KDOX), 34 km from the middle of the area, began a volume at 18:45 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 5, 2:54 PM EDT	TSTM WND DMG	Dover, DE	LIGHTNING AND DAMAGING WINDS HAVE KNOCKED DOWN POWER LINES IN DOVER AND CAMDEN. OUTAGES IN THE HUNDREDS.

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 5, 1:58 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.7 hours before the alert went out and 133 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: 1024 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 978 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 051842
SVRPHI
DEC001-051930-
/O.NEW.KPHI.SV.W.0141.060705T1842Z-060705T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
242 PM EDT WED JUL 5 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL KENT COUNTY IN CENTRAL DELAWARE
  THIS INCLUDES THE CITY OF DOVER

* UNTIL 330 PM EDT

* AT 238 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR HARTLY...OR ABOUT
  7 MILES WEST OF DOVER...AND MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CAMDEN BY 250 PM EDT...
  DOVER AND RISING SUN BY 255 PM EDT...
  9 MILES NORTH OF FREDERICA BY 300 PM EDT...
  6 MILES NORTH OF BOWERS BY 305 PM EDT...


A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM EDT.

LAT...LON 3922 7575 3904 7571 3894 7553 3901 7529
      3930 7526

$$

EBERWINE

1 follow-up statement

000 
WWUS51 KPHI 051911
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
311 PM EDT WED JUL 5 2006

DEC001-051930-
/O.CON.KPHI.SV.W.0141.000000T0000Z-060705T1930Z/
KENT DE-
311 PM EDT WED JUL 5 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR CENTRAL KENT COUNTY...

AT 307 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR
MAGNOLIA...OR ABOUT 6 MILES SOUTHEAST OF DOVER...MOVING EAST AT 15
MPH.

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
WEDNESDAY EVENING FOR SOUTHERN DELAWARE AND NORTHEASTERN MARYLAND 
AND SOUTHERN NEW JERSEY.

LAT...LON 3922 7575 3904 7571 3894 7553 3901 7529
      3930 7526

$$

EBERWINE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 11:19 AM EDT	Flash Flood Watch	PHI	Kent, New Castle, Sussex	16 hr
Jul 5, 5:26 PM EDT	Flash Flood Warning	PHI	Sussex	4 hr
Jul 5, 6:15 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	30 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2006 Every severe thunderstorm warning in 2006

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.