Alert archive / Maryland / Tornado Warnings in 2010
Tornado Warning 12, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this tornado warning at Sep 30, 2010, 8:00 AM EDT for Kent County, Maryland. It was in force for 45 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
- Sep 30, 2010, 8:00 AM EDT (12:00 UTC)
- Expired
- Sep 30, 2010, 8:45 AM EDT
- In force
- 45 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Kent County, MD
The radar
The Dover AFB radar (KDOX), 79 km from the middle of the area, began a volume at 12:03 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 |
|---|---|---|---|
| Sep 30, 4:55 AM EDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 0.0 hours before the alert went out and 106 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
- 47 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 449 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 514 m²/s²
- 0-3 km storm-relative helicity
- 665 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
203
WFUS51 KPHI 301200
TORPHI
MDC029-301245-
/O.NEW.KPHI.TO.W.0012.100930T1200Z-100930T1245Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
800 AM EDT THU SEP 30 2010
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* TORNADO WARNING FOR...
WESTERN KENT COUNTY IN NORTHEAST MARYLAND...
* UNTIL 845 AM EDT
* AT 758 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR OVERTON...
OR 10 MILES WEST OF CENTERVILLE...MOVING NORTH AT 30 MPH.
* THE TORNADO WILL BE NEAR...
ROCK HALL BY 815 AM EDT...
LANGFORD BY 820 AM EDT...
NEWTOWN BY 835 AM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY AFTERNOON
FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY.
&&
LAT...LON 3918 7628 3920 7625 3927 7622 3934 7617
3934 7615 3936 7613 3935 7604 3901 7622
3903 7625 3907 7623 3914 7626 3915 7628
TIME...MOT...LOC 1200Z 188DEG 26KT 3904 7625
$$
TFG1 follow-up statement
412
WWUS51 KPHI 301226
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
826 AM EDT THU SEP 30 2010
MDC029-301245-
/O.CON.KPHI.TO.W.0012.000000T0000Z-100930T1245Z/
KENT MD-
826 AM EDT THU SEP 30 2010
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 AM EDT FOR
NORTHWESTERN KENT COUNTY...
AT 821 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED 7 MILES SOUTHWEST OF
NEWTOWN...OR 15 MILES NORTHWEST OF CENTERVILLE...MOVING NORTH AT 30
MPH. THE DOPPLER RADAR TORNADIC SIGNATURE IS THE STRONGEST IT HAS
BEEN WITHIN KENT COUNTY.
THE TORNADO WILL BE NEAR...
NEWTOWN BY 835 AM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EDT THURSDAY AFTERNOON
FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY.
&&
LAT...LON 3921 7617 3919 7618 3917 7622 3919 7624
3922 7624 3927 7622 3934 7617 3934 7615
3936 7613 3936 7609
TIME...MOT...LOC 1225Z 188DEG 27KT 3924 7621
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 30, 6:06 AM EDT | Areal Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 4 hr |
| Sep 30, 11:21 AM EDT | Special Weather Statement | PHI | Kent, Talbot | 39 min |
| Sep 30, 12:15 PM EDT | Special Weather Statement | PHI | Queen Anne's | 45 min |
| Sep 30, 1:37 PM EDT | Special Weather Statement | PHI | Queen Anne's, Talbot | 38 min |
| Sep 30, 1:48 PM EDT | Areal Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 6 hr |
| Sep 30, 3:15 PM EDT | Special Weather Statement | PHI | Caroline | 45 min |
| Sep 30, 3:47 PM EDT | Special Weather Statement | PHI | Caroline | 58 min |
| Sep 30, 6:23 PM EDT | Special Weather Statement | PHI | Caroline | 37 min |
| Sep 30, 7:49 PM EDT | Coastal Flood Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 6 hr |
| Sep 30, 7:50 PM EDT | Areal Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 16 hr |
Nearby
Tornado Warnings in Maryland, 2010Every tornado warning in 2010Tornadoes in 2010
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.