Alert archive / Delaware / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 52, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 11, 2007, 3:06 PM EDT for New Castle County, Delaware. It was in force for 22 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
- Jun 11, 2007, 3:06 PM EDT (19:06 UTC)
- Expired
- Jun 11, 2007, 3:28 PM EDT
- In force
- 22 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County New Castle County, DE
The radar
The Dover AFB radar (KDOX), 72 km from the middle of the area, began a volume at 19:09 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 |
|---|---|---|---|
| Jun 11, 3:17 PM EDT | HAIL 0.25 | Townsend, DE | PEA SIZE HAIL WAS REPORTED IN TOWNSEND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.1 hours before the alert went out and 40 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
- 222 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 674 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 111906
SVRPHI
DEC003-111945-
/O.NEW.KPHI.SV.W.0052.070611T1906Z-070611T1945Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
306 PM EDT MON JUN 11 2007
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL AND SOUTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
* UNTIL 345 PM EDT
* AT 303 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
MIDDLETOWN...OR ABOUT 16 MILES SOUTH OF NEWARK...AND MOVING SOUTH
AT 15 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
TOWNSEND BY 320 PM EDT...
LAT...LON 3954 7555 3953 7578 3930 7576 3934 7557
3946 7560
$$
JRP1 follow-up statement
000
WWUS51 KPHI 111928
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
327 PM EDT MON JUN 11 2007
DEC003-111937-
/O.CAN.KPHI.SV.W.0052.000000T0000Z-070611T1945Z/
NEW CASTLE DE-
327 PM EDT MON JUN 11 2007
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN NEW CASTLE COUNTY IS
CANCELLED...
THE THUNDERSTORM WEAKENED AS IT MOVED SOUTHWARD THROUGH SOUTHERN NEW
CASTLE COUNTY...BUT IT STILL COULD PRODUCE LOCALLY GUSTY WINDS TO
NEAR 45 MILES AN HOUR...SMALL HAIL...AS WELL AS LOCALLY HEAVY RAIN
BETWEEN 1 AND 1 1/2 INCHES AS IT MOVES TOWARD THE SOUTH AT 15 MILES
AN HOUR.
LAT...LON 3954 7555 3953 7578 3930 7576 3934 7557
3946 7560
$$
JRPThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 6:24 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 36 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2007Every severe thunderstorm warning in 2007
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.