Alert archive / Delaware / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 17, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 7, 2013, 5:23 PM EDT for Sussex County, Delaware. It was in force for 52 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 7, 2013, 5:23 PM EDT (21:23 UTC)
- Expired
- Jun 7, 2013, 6:15 PM EDT
- In force
- 52 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 30 km from the middle of the area, began a volume at 21:25 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 |
|---|---|---|---|
| Jun 7, 1:00 PM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.4 hours before the alert went out and 74 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
- 45 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 596 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
939
WUUS51 KPHI 072123
SVRPHI
DEC005-072215-
/O.NEW.KPHI.SV.W.0017.130607T2123Z-130607T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
523 PM EDT FRI JUN 7 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 615 PM EDT
* AT 517 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM. THE STORM WAS NEAR HEBRON...MOVING NORTHEAST
AT 40 MPH. THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
LAUREL AROUND 535 PM EDT...
SEAFORD AND SYCAMORE AROUND 540 PM EDT...
BRIDGEVILLE AND GEORGETOWN AROUND 550 PM EDT...
ELLENDALE AROUND 600 PM EDT...
MILTON AROUND 605 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. IF A TORNADO IS
SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STRONG
BUILDING...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH
COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO
NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3845 7552 3845 7567 3846 7567 3846 7569
3846 7570 3873 7572 3883 7568 3884 7559
3876 7516 3844 7550
TIME...MOT...LOC 2122Z 206DEG 34KT 3847 7566
$$
FORECASTER:SZATKOWSKI1 follow-up statement
204
WWUS51 KPHI 072149
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
549 PM EDT FRI JUN 7 2013
DEC005-072215-
/O.CON.KPHI.SV.W.0017.000000T0000Z-130607T2215Z/
SUSSEX DE-
549 PM EDT FRI JUN 7 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SUSSEX COUNTY...
AT 545 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR BLADES...OR 8 MILES
WEST OF GEORGETOWN...MOVING NORTHEAST AT 40 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
GEORGETOWN AND GREENWOOD AROUND 555 PM EDT...
ELLENDALE AROUND 600 PM EDT...
MILTON AROUND 605 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. WHILE NOT
IMMEDIATELY LIKELY...A TORNADO MAY DEVELOP. IF A TORNADO IS
SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH
COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO
NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 3845 7552 3845 7567 3846 7567 3846 7569
3846 7570 3873 7572 3883 7568 3884 7559
3876 7516 3844 7550
TIME...MOT...LOC 2148Z 206DEG 34KT 3869 7552
$$
FORECASTER: SZATKOWSKIThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 8:42 PM EDT | Rip Current Statement | PHI | Sussex | 48 hr |
| Jun 7, 10:02 AM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Jun 7, 11:08 AM EDT | River Flood Warning | PHI | New Castle | 15 hr |
| Jun 7, 1:40 PM EDT | Areal Flood Advisory | PHI | New Castle | 6 hr |
| Jun 7, 1:51 PM EDT | Areal Flood Warning | PHI | New Castle | 16 hr |
| Jun 7, 2:17 PM EDT | Areal Flood Advisory | PHI | Kent | 6 hr |
| Jun 7, 2:44 PM EDT | River Flood Warning | PHI | New Castle | 11 hr |
| Jun 7, 2:52 PM EDT | River Flood Warning | PHI | New Castle | 8 hr |
| Jun 7, 3:45 PM EDT | Special Weather Statement | PHI | Kent, Sussex | 60 min |
| Jun 7, 5:11 PM EDT | Special Weather Statement | PHI | Kent | 64 min |
| Jun 7, 5:52 PM EDT | Flash Flood Warning | PHI | Kent, New Castle | 7 hr |
Nearby
Severe Thunderstorm Warnings in Delaware, 2013Every severe thunderstorm warning in 2013
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.