Alert archive / Delaware / Tornado Warnings in 2010

Tornado Warning 2, NWS Philadelphia/Mount Holly

July 13, 2010Kent County, New Castle County, Delaware; Caroline County, Maryland

NWS Philadelphia/Mount Holly issued this tornado warning at Jul 13, 2010, 6:30 AM EDT for Kent County, New Castle County, Delaware; Caroline 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: Jul 13, 2010, 6:30 AM EDT (10:30 UTC)
Expired: Jul 13, 2010, 7:15 AM EDT
In force: 45 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Kent County, DE, New Castle County, DE, Caroline County, MD

The radar

The Dover AFB radar (KDOX), 42 km from the middle of the area, began a volume at 10:32 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 nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 10.5 hours before the alert went out and 137 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 7 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1406 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

195 
WFUS51 KPHI 131030
TORPHI
DEC001-003-MDC011-131115-
/O.NEW.KPHI.TO.W.0002.100713T1030Z-100713T1115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
630 AM EDT TUE JUL 13 2010

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN KENT COUNTY IN CENTRAL DELAWARE...
  NORTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND...
  EXTREME SOUTH CENTRAL NEW CASTLE COUNTY IN NORTHERN DELAWARE...

* UNTIL 715 AM EDT

* AT 625 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR SANDTOWN...
  OR 14 MILES SOUTHWEST OF DOVER...MOVING NORTHEAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  HAZLETTVILLE AND HARTLY BY 645 AM EDT...
  CHESWOLD BY 705 AM EDT...
  SMYRNA...CLAYTON AND 7 MILES SOUTHEAST OF GREEN SPRING BY 715 AM
  EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3895 7571 3905 7582 3914 7578 3914 7575
      3921 7576 3934 7571 3929 7545
TIME...MOT...LOC 1030Z 217DEG 18KT 3907 7573

$$

HAYES

1 follow-up statement

033 
WWUS51 KPHI 131047
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
647 AM EDT TUE JUL 13 2010

MDC011-131057-
/O.CAN.KPHI.TO.W.0002.000000T0000Z-100713T1115Z/
CAROLINE MD-
647 AM EDT TUE JUL 13 2010

...THE TORNADO WARNING FOR NORTHEASTERN CAROLINE COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE TORNADO WARNING HAS MOVED OUT OF THE 
COUNTY. 

LAT...LON 3896 7571 3906 7574 3913 7574 3914 7575
      3921 7574 3934 7571 3929 7545
TIME...MOT...LOC 1047Z 217DEG 18KT 3914 7566

$$

DEC001-003-131115-
/O.CON.KPHI.TO.W.0002.000000T0000Z-100713T1115Z/
KENT DE-NEW CASTLE DE-
647 AM EDT TUE JUL 13 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 AM EDT FOR SOUTH
CENTRAL NEW CASTLE AND NORTHWESTERN KENT COUNTIES...

AT 644 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR HAZLETTVILLE...OR
9 MILES WEST OF DOVER...MOVING NORTHEAST AT 20 MPH.

THE TORNADO WILL BE NEAR...
  KENTON BY 700 AM EDT...
  CHESWOLD AND CLAYTON BY 710 AM EDT...
  LEIPSIC...SMYRNA AND 7 MILES SOUTHEAST OF GREEN SPRING BY 715 AM
  EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3896 7571 3906 7574 3913 7574 3914 7575
      3921 7574 3934 7571 3929 7545
TIME...MOT...LOC 1047Z 217DEG 18KT 3914 7566

$$

HAYES

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 13, 3:28 AM EDT	Special Weather Statement	PHI	Sussex	62 min
Jul 13, 3:33 AM EDT	Special Weather Statement	PHI	New Castle	57 min
Jul 13, 4:46 AM EDT	Special Weather Statement	PHI	New Castle	59 min
Jul 13, 4:48 AM EDT	Special Weather Statement	PHI	Kent	57 min
Jul 13, 5:48 AM EDT	Areal Flood Advisory	PHI	Sussex	76 min
Jul 13, 6:07 AM EDT	Areal Flood Advisory	PHI	New Castle	113 min
Jul 13, 6:20 AM EDT	Flash Flood Warning	PHI	New Castle	115 min
Jul 13, 2:48 PM EDT	Flash Flood Watch	PHI	New Castle	19 hr
Jul 13, 3:08 PM EDT	Excessive Heat Watch	PHI	New Castle	63 hr
Jul 13, 2:58 AM EDT	Special Weather Statement	PHI	Queen Anne's, Talbot	62 min
Jul 13, 3:25 AM EDT	Special Weather Statement	PHI	Kent, Queen Anne's, Talbot	65 min
Jul 13, 3:51 AM EDT	Areal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	114 min
Jul 13, 5:39 AM EDT	Special Weather Statement	PHI	Caroline	66 min

Nearby

Tornado Warnings in Delaware, 2010 Tornado Warnings in Maryland, 2010 Every tornado warning in 2010 Tornadoes 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.