Alert archive / Maryland / Tornado Warnings in 2009

Tornado Warning 6, NWS Philadelphia/Mount Holly

June 20, 2009Kent County, Queen Anne's County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this tornado warning at Jun 20, 2009, 4:06 PM EDT for Kent County, Queen Anne's County, Talbot County, Maryland. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 20, 2009, 4:06 PM EDT (20:06 UTC)
Expired: Jun 20, 2009, 4:38 PM EDT
In force: 32 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Kent County, MD, Queen Anne's County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 69 km from the middle of the area, began a volume at 20:06 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.

What was reported inside it

Time	Report	Where	Remark
Jun 20, 4:15 PM EDT	TSTM WND DMG	5 Sse Overton, MD	SWATH OF DAMAGE TO CORN FIELD IN GRASONVILLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 20, 3:05 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.1 hours before the alert went out and 103 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: 1441 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 978 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

000 
WFUS51 KPHI 202006
TORPHI
MDC029-035-041-202100-
/O.NEW.KPHI.TO.W.0006.090620T2006Z-090620T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
406 PM EDT SAT JUN 20 2009

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL TALBOT COUNTY IN EASTERN MARYLAND...
  EXTREME SOUTHWESTERN KENT COUNTY IN NORTHEAST MARYLAND...
  SOUTHWESTERN QUEEN ANNES COUNTY IN NORTHEAST MARYLAND...
  THIS INCLUDES THE CITY OF CENTERVILLE...

* UNTIL 500 PM EDT

* AT 403 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A WATERSPOUT     
  JUST OFF OF LOVE POINT...OR 14 MILES WEST OF CENTERVILLE...MOVING  
  SOUTHEAST AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  STEVENSVILLE AND CHESTER BY 410 PM EDT...
  OVERTON BY 415 PM EDT...
  GRASONVILLE BY 425 PM EDT...
  WYE MILLS BY 435 PM EDT...
  STARR BY 440 PM EDT...
  SKIPTON BY 445 PM 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 3905 7631 3899 7624 3898 7621 3901 7617
      3905 7618 3901 7619 3903 7625 3910 7624
      3909 7619 3905 7620 3908 7615 3904 7596
      3881 7612 3886 7621 3893 7621 3894 7624
      3890 7623 3896 7635
TIME...MOT...LOC 2005Z 298DEG 22KT 3903 7631

$$

KRUZDLO

1 follow-up statement

000 
WWUS51 KPHI 202038
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
438 PM EDT SAT JUN 20 2009

MDC029-035-041-202048-
/O.CAN.KPHI.TO.W.0006.000000T0000Z-090620T2100Z/
KENT MD-QUEEN ANNES MD-TALBOT MD-
438 PM EDT SAT JUN 20 2009

...THE TORNADO WARNING FOR NORTH CENTRAL TALBOT...SOUTHWESTERN QUEEN
ANNES AND EXTREME SOUTHWESTERN KENT COUNTIES IS CANCELLED...

LAT...LON 3905 7631 3899 7624 3898 7621 3901 7617
      3905 7618 3901 7619 3903 7625 3910 7624
      3909 7619 3905 7620 3908 7615 3904 7596
      3881 7612 3886 7621 3893 7621 3894 7624
      3890 7623 3896 7635
TIME...MOT...LOC 2038Z 298DEG 22KT 3893 7608

$$

KRUZDLO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 3:57 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's, Talbot	66 min
Jun 20, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	53 min
Jun 20, 5:01 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	59 min

Nearby

Tornado Warnings in Maryland, 2009 Every tornado warning in 2009 Tornadoes in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.