Alert archive / Maryland / Tornado Warnings in 2013

Tornado Warning 3, NWS Philadelphia/Mount Holly

June 28, 2013Cecil County, Maryland; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this tornado warning at Jun 28, 2013, 4:27 PM EDT for Cecil County, Maryland; New Castle County, Delaware. It was in force for 33 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 28, 2013, 4:27 PM EDT (20:27 UTC)
Expired: Jun 28, 2013, 5:00 PM EDT
In force: 33 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties New Castle County, DE, Cecil County, MD

The radar

The Dover AFB radar (KDOX), 88 km from the middle of the area, began a volume at 20:27 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 28, 4:45 PM EDT	FUNNEL CLOUD	Newark, DE	FUNNEL CLOUD AND WALL CLOUDS OBSERVED FROM NEAR NEWARK TO THE BEAR AREA.

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 28, 2:08 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.5 hours before the alert went out and 166 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: 34 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1246 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

303 
WFUS51 KPHI 282027
TORPHI
DEC003-MDC015-282100-
/O.NEW.KPHI.TO.W.0003.130628T2027Z-130628T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
427 PM EDT FRI JUN 28 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL NEW CASTLE COUNTY IN NORTHERN DELAWARE...
  NORTHEASTERN CECIL COUNTY IN NORTHEAST MARYLAND...

* UNTIL 500 PM EDT

* AT 423 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM
  CONTAINING THE POSSIBLE TORNADO WAS NEAR CHERRY HILL...MOVING EAST
  AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  BRANTWOOD AROUND 430 PM EDT...
  GLASGOW AND NEWARK AROUND 435 PM EDT...
  BEAR AND MOUNT PLEASANT AROUND 445 PM EDT...
  SAINT GEORGES AND NEWPORT AROUND 450 PM EDT...
  DELAWARE CITY AND NEW CASTLE AROUND 455 PM EDT...
  PORT PENN AROUND 500 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...

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEASTERN PENNSYLVANIA.

&&

LAT...LON 3970 7593 3973 7553 3966 7554 3962 7560
      3959 7559 3964 7557 3955 7556 3950 7556
      3948 7558 3945 7558 3958 7595
TIME...MOT...LOC 2027Z 284DEG 23KT 3962 7583

$$

FORECASTER:

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 3:19 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	41 min
Jun 28, 4:20 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	55 min
Jun 28, 4:47 PM EDT	Special Weather Statement	PHI	Caroline, Kent, Queen Anne's, Talbot	73 min
Jun 28, 4:50 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	55 min
Jun 28, 5:09 PM EDT	Flash Flood Warning	PHI	Cecil	11 hr
Jun 28, 5:14 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	46 min
Jun 28, 6:09 PM EDT	Severe Thunderstorm Warning	PHI	Caroline	96 min
Jun 28, 3:33 PM EDT	Areal Flood Advisory	PHI	New Castle	117 min
Jun 28, 6:48 PM EDT	River Flood Warning	PHI	New Castle	9 hr
Jun 28, 6:48 PM EDT	River Flood Warning	PHI	New Castle	8 hr

Nearby

Tornado Warnings in Maryland, 2013 Tornado Warnings in Delaware, 2013 Every tornado warning in 2013 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.