Alert archive / Delaware / Tornado Warnings in 2013
Tornado Warning 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this tornado warning at Jun 10, 2013, 11:00 PM EDT for Sussex County, Delaware. It was in force for 30 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, 11:00 PM EDT (03:00 UTC)
- Expired
- Jun 10, 2013, 11:30 PM EDT
- In force
- 30 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 35 km from the middle of the area, began a volume at 03:00 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 00:00Z, 3.0 hours before the alert went out and 71 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
- 54 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 920 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
690
WFUS51 KPHI 110300
TORPHI
DEC005-110330-
/O.NEW.KPHI.TO.W.0002.130611T0300Z-130611T0330Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1100 PM EDT MON JUN 10 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* TORNADO WARNING FOR...
WESTERN SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 1130 PM EDT
* AT 1056 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM
CONTAINING THE POSSIBLE TORNADO WAS NEAR VIENNA...MOVING NORTHEAST
AT 35 MPH.
* THE TORNADO WILL BE NEAR...
LAUREL AND SEAFORD AROUND 1120 PM EDT...
SYCAMORE AROUND 1130 PM EDT...
WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. IF YOU WAIT TO
SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.
TAKE COVER INSIDE NOW. DO NOT WAIT TO SEE OR HEAR THE TORNADO. MOVE
TO AN INTERIOR ROOM ON THE LOWEST LEVEL OF A STURDY BUILDING. PUT AS
MANY WALLS BETWEEN YOU AND THE OUTSIDE AS YOU CAN. AVOID WINDOWS.
PROTECT YOURSELF FROM FLYING DEBRIS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TUESDAY MORNING
FOR DELAWARE AND NORTHEASTERN MARYLAND.
&&
LAT...LON 3846 7567 3846 7569 3846 7570 3855 7571
3868 7571 3879 7547 3856 7533 3845 7566
TIME...MOT...LOC 0300Z 242DEG 29KT 3852 7578
$$
FORECASTER: HEAVENER1 follow-up statement
745 WWUS51 KPHI 110322 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1122 PM EDT MON JUN 10 2013 DEC005-110330- /O.CON.KPHI.TO.W.0002.000000T0000Z-130611T0330Z/ SUSSEX DE- 1122 PM EDT MON JUN 10 2013 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR CENTRAL SUSSEX COUNTY... AT 1121 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM WITH STRONG ROTATION THAT MAY BE PRODUCING A TORNADO. THIS STORM THAT MAY BE PRODUCING A TORNADO WAS LOCATED NEAR BETHEL...OR 12 MILES SOUTHWEST OF GEORGETOWN...MOVING NORTHEAST AT 35 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BLADES PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TUESDAY MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND. && LAT...LON 3855 7563 3865 7562 3872 7543 3858 7534 TIME...MOT...LOC 0322Z 242DEG 29KT 3860 7558 $$ FORECASTER: HEAVENER
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 10:49 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 116 min |
| Jun 10, 10:52 PM EDT | Special Weather Statement | PHI | Sussex | 53 min |
| Jun 11, 12:00 AM EDT | Special Weather Statement | PHI | Sussex | 60 min |
Nearby
Tornado Warnings in Delaware, 2013Every tornado warning in 2013Tornadoes 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.