Alert archive / Delaware / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 186, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 27, 2008, 3:38 PM EDT for Kent County, Sussex County, Delaware. It was in force for 54 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
- Jul 27, 2008, 3:38 PM EDT (19:38 UTC)
- Expired
- Jul 27, 2008, 4:32 PM EDT
- In force
- 54 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), 25 km from the middle of the area, began a volume at 19:35 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 27, 11:26 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.6 hours before the alert went out and 124 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.
- Mixed-layer CAPE
- 1209 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 775 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 271938
SVRPHI
DEC001-005-272045-
/O.NEW.KPHI.SV.W.0186.080727T1938Z-080727T2045Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
338 PM EDT SUN JUL 27 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
KENT COUNTY IN CENTRAL DELAWARE...
NORTHWESTERN SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 445 PM EDT
* AT 336 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
DOVER...AND MOVING SOUTHEAST AT 20 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
RISING SUN AND WOODSIDE BY 345 PM...
VIOLA BY 350 PM...
BOWERS BY 405 PM...
BIG STONE BEACH BY 425 PM...
MILFORD BY 430 PM...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM SUNDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
EASTERN PENNSYLVANIA.
LAT...LON 3877 7572 3911 7575 3927 7540 3921 7538
3917 7540 3913 7540 3911 7539 3908 7539
3903 7533 3898 7529 3892 7530
TIME...MOT...LOC 1938Z 322DEG 16KT 3913 7553
$$
IOVINO1 follow-up statement
000
WWUS51 KPHI 272032
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
432 PM EDT SUN JUL 27 2008
DEC001-005-272042-
/O.CAN.KPHI.SV.W.0186.000000T0000Z-080727T2045Z/
KENT DE-SUSSEX DE-
432 PM EDT SUN JUL 27 2008
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN SUSSEX AND KENT
COUNTIES IS CANCELLED...
THE SEVERE THUNDERSTORM HAS MOVED AWAY FROM THE AFFECTED AREA.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT SUNDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY.
LAT...LON 3877 7572 3911 7575 3927 7540 3921 7538
3917 7540 3913 7540 3911 7539 3908 7539
3903 7533 3898 7529 3892 7530
TIME...MOT...LOC 2032Z 322DEG 16KT 3894 7534
$$
IOVINOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 12:57 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 63 min |
| Jul 27, 2:00 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 60 min |
| Jul 27, 2:17 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 58 min |
| Jul 27, 2:31 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 59 min |
| Jul 27, 2:35 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 55 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2008Every severe thunderstorm warning in 2008
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.