Alert archive / Delaware / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 18, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 10, 2013, 3:00 PM EDT for Kent County, Sussex County, Delaware. It was in force for 60 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 10, 2013, 3:00 PM EDT (19:00 UTC)
- Expired
- Jun 10, 2013, 4:00 PM EDT
- In force
- 60 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), 11 km from the middle of the area, began a volume at 19:01 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 10, 2:02 PM EDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.0 hours before the alert went out and 95 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
- 470 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 593 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
799
WUUS51 KPHI 101900
SVRPHI
DEC001-005-102000-
/O.NEW.KPHI.SV.W.0018.130610T1900Z-130610T2000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
300 PM EDT MON JUN 10 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL KENT COUNTY IN CENTRAL DELAWARE...
CENTRAL SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 400 PM EDT
* AT 257 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM. THE STORM WAS NEAR GUMBORO...MOVING NORTH AT
35 MPH. THIS STORM IS CAPABLE OF PRODUCING ONE INCH DIAMETER
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
DAGSBORO AROUND 305 PM EDT...
MILLSBORO AROUND 310 PM EDT...
GEORGETOWN AROUND 320 PM EDT...
MILTON AND ELLENDALE AROUND 330 PM EDT...
LEWES AROUND 335 PM EDT...
SLAUGHTER BEACH AROUND 345 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS CREATE WINDS OF MORE THAN 57 MPH...OR HAIL ONE
INCH OR LARGER.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT MONDAY EVENING
FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.
&&
LAT...LON 3845 7547 3848 7547 3896 7542 3899 7540
3901 7532 3899 7530 3894 7530 3893 7530
3893 7532 3881 7518 3878 7511 3845 7522
TIME...MOT...LOC 1900Z 192DEG 30KT 3852 7534
$$
FORECASTER: HEAVENER2 follow-up statements
066
WWUS51 KPHI 101929
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
329 PM EDT MON JUN 10 2013
DEC001-005-102000-
/O.CON.KPHI.SV.W.0018.000000T0000Z-130610T2000Z/
KENT DE-SUSSEX DE-
329 PM EDT MON JUN 10 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR EASTERN SUSSEX AND SOUTHEASTERN KENT COUNTIES...
AT 325 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
NEAR MILTON...OR 6 MILES EAST OF GEORGETOWN...MOVING NORTH AT 35 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
LEWES AROUND 335 PM EDT...
SLAUGHTER BEACH AROUND 345 PM EDT...
BIG STONE BEACH AROUND 355 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT MONDAY EVENING
FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.
&&
LAT...LON 3859 7546 3896 7542 3899 7540 3901 7532
3899 7530 3893 7530 3893 7532 3881 7518
3878 7511 3855 7519
TIME...MOT...LOC 1929Z 192DEG 30KT 3876 7528
$$
FORECASTER: HEAVENER832
WWUS51 KPHI 101941
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
341 PM EDT MON JUN 10 2013
DEC001-005-101950-
/O.CAN.KPHI.SV.W.0018.000000T0000Z-130610T2000Z/
KENT DE-SUSSEX DE-
341 PM EDT MON JUN 10 2013
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN SUSSEX AND
SOUTHEASTERN KENT COUNTIES IS CANCELLED...
THE STORM HAS WEAKENED TO BELOW SEVERE LIMITS...THEREFORE THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT MONDAY EVENING
FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.
LAT...LON 3859 7546 3896 7542 3899 7540 3901 7532
3899 7530 3893 7530 3893 7532 3881 7518
3878 7511 3855 7519
TIME...MOT...LOC 1940Z 192DEG 30KT 3885 7526
$$
FORECASTER: HEAVENERThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 3:30 AM EDT | Flood Watch | PHI | Kent, New Castle, Sussex | 24 hr |
| Jun 10, 5:58 AM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Jun 10, 2:44 PM EDT | Special Weather Statement | PHI | Sussex | 61 min |
| Jun 10, 4:02 PM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Jun 10, 4:46 PM EDT | Tornado Warning | PHI | New Castle | 29 min |
| Jun 10, 5:06 PM EDT | Areal Flood Warning | PHI | New Castle | 12 hr |
| Jun 10, 6:17 PM EDT | River Flood Warning | PHI | New Castle | 5 hr |
| Jun 10, 6:59 PM EDT | River Flood Warning | PHI | New Castle | 70 min |
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.