Alert archive / Delaware / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 96, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 21, 2008, 7:13 PM EDT for Sussex County, Delaware. It was in force for 24 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
- Jun 21, 2008, 7:13 PM EDT (23:13 UTC)
- Expired
- Jun 21, 2008, 7:37 PM EDT
- In force
- 24 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 26 km from the middle of the area, began a volume at 23:13 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.2 hours before the alert went out and 80 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
- 972 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 881 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 212313
SVRPHI
DEC005-220045-
/O.NEW.KPHI.SV.W.0096.080621T2313Z-080622T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
713 PM EDT SAT JUN 21 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 845 PM EDT
* AT 706 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
LAUREL...OR ABOUT 46 MILES SOUTH OF DOVER...AND MOVING NORTH AT 16
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
LAUREL BY 725 PM...
SYCAMORE BY 740 PM...
SEAFORD BY 745 PM...
6 MILES EAST OF BRIDGEVILLE BY 805 PM...
6 MILES WEST OF GEORGETOWN BY 810 PM...
ELLENDALE AND 8 MILES WEST OF MILTON BY 835 PM...
THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY RAINFALL WHICH MAY
RESULT IN LOCALIZED AREAS OF FLOODING. DO NOT DRIVE IN AREAS WHERE
WATER IS CROSSING THE ROAD.
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.
LAT...LON 3846 7570 3846 7571 3850 7571 3859 7572
3883 7570 3884 7556 3884 7555 3884 7522
3845 7546
TIME...MOT...LOC 2313Z 200DEG 14KT 3852 7559
$$
RNS1 follow-up statement
000
WWUS51 KPHI 212337
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
737 PM EDT SAT JUN 21 2008
DEC005-212347-
/O.CAN.KPHI.SV.W.0096.000000T0000Z-080622T0045Z/
SUSSEX DE-
737 PM EDT SAT JUN 21 2008
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN SUSSEX COUNTY IS
CANCELLED...
THE THUNDERSTORM THAT RADAR INDICATED TO BE SEVERE HAS WEAKENED AS IT
WAS HEADING NORTH THROUGH SUSSEX COUNTY DELAWARE. GUSTY WINDS TO 40 MPH
ARE STILL POSSIBLE AS WELL AS A PERIOD OF HEAVY RAIN.
LAT...LON 3846 7570 3846 7571 3850 7571 3859 7572
3883 7570 3884 7556 3884 7555 3884 7522
3845 7546
TIME...MOT...LOC 2337Z 200DEG 14KT 3861 7555
$$
RNSNearby
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.