Alert archive / Delaware / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 113, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Oct 7, 2013, 2:18 PM EDT for Kent County, Sussex County, Delaware; Caroline County, Talbot County, Maryland. It was in force for 57 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
- Oct 7, 2013, 2:18 PM EDT (18:18 UTC)
- Expired
- Oct 7, 2013, 3:15 PM EDT
- In force
- 57 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 12 km from the middle of the area, began a volume at 18:16 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 |
|---|---|---|---|
| Oct 7, 8:56 AM EDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.3 hours before the alert went out and 88 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
- 171 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 742 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
722
WUUS51 KPHI 071818
SVRPHI
DEC001-005-MDC011-041-071915-
/O.NEW.KPHI.SV.W.0113.131007T1818Z-131007T1915Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
218 PM EDT MON OCT 7 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN KENT COUNTY IN CENTRAL DELAWARE...
SOUTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
SUSSEX COUNTY IN SOUTHERN DELAWARE...
NORTHEASTERN TALBOT COUNTY IN EASTERN MARYLAND...
* UNTIL 315 PM EDT
* AT 216 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM. THE STORM WAS NEAR FEDERALSBURG...MOVING EAST
AT 45 MPH. THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
SMITHVILLE AROUND 225 PM EDT...
SEAFORD AND ANDREWSVILLE AROUND 230 PM EDT...
BRIDGEVILLE AROUND 235 PM EDT...
SYCAMORE AND HARRINGTON AROUND 240 PM EDT...
ELLENDALE AND GEORGETOWN AROUND 245 PM EDT...
MILLSBORO AROUND 250 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. 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.
&&
LAT...LON 3853 7570 3863 7571 3868 7576 3867 7579
3869 7581 3870 7586 3865 7596 3892 7599
3902 7533 3894 7530 3893 7532 3881 7518
3879 7513 3868 7510 3868 7512 3865 7512
3862 7507 3852 7506
TIME...MOT...LOC 1818Z 258DEG 40KT 3871 7580
$$
SZATKOWSKI1 follow-up statement
157
WWUS51 KPHI 071856
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
256 PM EDT MON OCT 7 2013
MDC011-041-071905-
/O.CAN.KPHI.SV.W.0113.000000T0000Z-131007T1915Z/
CAROLINE MD-TALBOT MD-
256 PM EDT MON OCT 7 2013
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TALBOT AND
SOUTHERN CAROLINE COUNTIES IS CANCELLED...
THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM EDT MONDAY AFTERNOON
FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND EASTERN
PENNSYLVANIA.
LAT...LON 3853 7570 3854 7570 3870 7566 3896 7566
3902 7533 3894 7530 3893 7532 3881 7518
3879 7513 3868 7510 3868 7512 3865 7512
3862 7507 3852 7506
TIME...MOT...LOC 1855Z 259DEG 30KT 3875 7559
$$
DEC001-005-071915-
/O.CON.KPHI.SV.W.0113.000000T0000Z-131007T1915Z/
KENT DE-SUSSEX DE-
256 PM EDT MON OCT 7 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR SUSSEX AND SOUTHEASTERN KENT COUNTIES...
AT 252 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 BRIDGEVILLE...OR 13
MILES WEST OF GEORGETOWN...MOVING EAST AT 35 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
FARMINGTON AND SYCAMORE AROUND 300 PM EDT...
HOUSTON AROUND 305 PM EDT...
ELLENDALE AND GEORGETOWN AROUND 310 PM EDT...
MILTON AND MILFORD AROUND 315 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. 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.
&&
LAT...LON 3853 7570 3854 7570 3870 7566 3896 7566
3902 7533 3894 7530 3893 7532 3881 7518
3879 7513 3868 7510 3868 7512 3865 7512
3862 7507 3852 7506
TIME...MOT...LOC 1855Z 259DEG 30KT 3875 7559
$$
SZATKOWSKIThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 7, 12:41 PM EDT | Special Weather Statement | PHI | New Castle | 64 min |
| Oct 7, 1:05 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 25 min |
| Oct 7, 1:37 PM EDT | Special Weather Statement | PHI | Kent, New Castle | 53 min |
| Oct 7, 3:21 PM EDT | Special Weather Statement | PHI | Sussex | 39 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2013Severe Thunderstorm Warnings in Maryland, 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.