Alert archive / Maryland / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 72, NWS Philadelphia/Mount Holly

July 2, 2014Kent County, Queen Anne's County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 2, 2014, 11:24 PM EDT for Kent County, Queen Anne's County, Talbot County, Maryland. It was in force for 66 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: Jul 2, 2014, 11:24 PM EDT (03:24 UTC)
Expired: Jul 3, 2014, 12:30 AM EDT
In force: 66 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 03:23 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
Jul 2, 11:55 PM EDT	TSTM WND DMG	Grasonville, MD	NUMEROUS TREES AND LINES DOWN IN GRASONVILLE AND CENTERVILLE. TIME ESTIMATED FROM RADAR.

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

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 3.4 hours before the alert went out and 102 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: 291 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 1753 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

760 
WUUS51 KPHI 030324
SVRPHI
MDC029-035-041-030430-
/O.NEW.KPHI.SV.W.0072.140703T0324Z-140703T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1124 PM EDT WED JUL 2 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN KENT COUNTY IN NORTHEAST MARYLAND...
  QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
  TALBOT COUNTY IN EASTERN MARYLAND...

* UNTIL 1230 AM EDT

* AT 1123 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM BAY
  RIDGE TO HIGHLAND BEACH TO SHADY SIDE TO TILGHMAN ISLAND TO
  HUDSON...MOVING NORTHEAST AT 25 MPH. THESE STORMS ARE CAPABLE OF
  PRODUCING ONE INCH DIAMETER HAIL...AND DAMAGING WINDS IN EXCESS OF
  60 MPH. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  KENT POINT AROUND 1135 PM EDT...
  TILGHMAN ISLAND AND STEVENSVILLE AROUND 1140 PM EDT...
  CHESTER AROUND 1145 PM EDT...
  TALBOT AND OXFORD AROUND 1150 PM EDT...
  ROCK HALL AND ST. MICHAELS AROUND 1155 PM EDT...
  GRASONVILLE AROUND MIDNIGHT EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

&&

LAT...LON 3876 7636 3887 7625 3881 7621 3882 7620
      3894 7624 3890 7624 3893 7628 3884 7639
      3905 7631 3899 7627 3900 7618 3903 7625
      3918 7628 3931 7597 3921 7589 3879 7594
      3863 7615 3873 7626 3867 7635 3877 7639
TIME...MOT...LOC 0325Z 237DEG 22KT 3899 7641 3891 7641
          3881 7645 3870 7644 3861 7636

$$

FORECASTER: HEAVENER

3 follow-up statements

189 
WWUS51 KPHI 030353
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1153 PM EDT WED JUL 2 2014

MDC029-035-041-030430-
/O.CON.KPHI.SV.W.0072.000000T0000Z-140703T0430Z/
KENT MD-QUEEN ANNE'S MD-TALBOT MD-
1153 PM EDT WED JUL 2 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT
FOR NORTHERN TALBOT...QUEEN ANNE'S AND SOUTHWESTERN KENT COUNTIES...

AT 1150 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM OVERTON TO CHESTER TO
STEVENSVILLE SOUTH TO ST. MICHAELS TO 7 MILES SOUTH OF ST.
MICHAELS...OR ALONG A LINE EXTENDING FROM 10 MILES WEST OF
CENTERVILLE TO 13 MILES SOUTHEAST OF ANNAPOLIS TO 18 MILES SOUTHEAST
OF ANNAPOLIS TO 11 MILES NORTHWEST OF CAMBRIDGE...MOVING NORTHEAST AT
25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  QUEENSTOWN AND COPPERVILLE BY 1205 AM EDT...
  LANGFORD...EASTON AND OLD TOWN BY 1210 AM EDT...
  CHESTERTOWN...CENTREVILLE...CENTERVILLE AND WYE MILLS BY 1220 AM
  EDT...

A WIDE SWATH OF 70 MPH WINDS ARE POSSIBLE WITH THIS STORM AS IT 
MOVES EASTWARD FROM GRASONVILLE TOWARDS STARR MARYLAND.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 3905 7631 3899 7627 3900 7618 3903 7625
      3919 7628 3931 7597 3921 7589 3895 7595
      3879 7594 3869 7607 3875 7627 3887 7625
      3881 7621 3882 7620 3893 7623 3894 7624
      3890 7624 3893 7628 3885 7638 3886 7638
TIME...MOT...LOC 0351Z 237DEG 22KT 3908 7624 3900 7624
          3890 7628 3879 7627 3870 7619

$$

HEAVENER

223 
WWUS51 KPHI 030408
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1208 AM EDT THU JUL 3 2014

MDC029-030418-
/O.CAN.KPHI.SV.W.0072.000000T0000Z-140703T0430Z/
KENT MD-
1208 AM EDT THU JUL 3 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN KENT COUNTY IS 
CANCELLED...

LAT...LON 3910 7612 3914 7609 3914 7608 3915 7609
      3917 7604 3919 7607 3920 7607 3922 7591
      3904 7593 3896 7595 3891 7594 3890 7613
      3901 7614
TIME...MOT...LOC 0408Z 237DEG 22KT 3914 7613 3906 7613
          3896 7617 3885 7616 3876 7608

$$

MDC035-041-030430-
/O.CON.KPHI.SV.W.0072.000000T0000Z-140703T0430Z/
QUEEN ANNE'S MD-TALBOT MD-
1208 AM EDT THU JUL 3 2014

...THIS IS AN EXTREMELY DANGEROUS AND POTENTIALLY LIFE THREATENING
SITUATION...

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT
FOR NORTHEASTERN TALBOT AND CENTRAL QUEEN ANNE'S COUNTIES...

AT 1203 AM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING GOLF BALL SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF
70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7
MILES NORTHWEST OF CENTERVILLE TO CENTREVILLE TO 6 MILES WEST OF WYE
MILLS TO 10 MILES SOUTHWEST OF WYE MILLS TO 14 MILES SOUTH OF WYE
MILLS...OR ALONG A LINE EXTENDING FROM 7 MILES NORTHWEST OF
CENTERVILLE TO CENTERVILLE TO 10 MILES SOUTHWEST OF CENTERVILLE TO 16
MILES SOUTHWEST OF CENTERVILLE TO 12 MILES NORTH OF CAMBRIDGE...
MOVING NORTHEAST AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  CENTREVILLE...CENTERVILLE AND WYE MILLS BY 1220 AM EDT...
  STARKEY CORNER BY 1225 AM EDT...
  STARR...CARVILLE...HOPE AND QUEEN ANNE BY 1230 AM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 3910 7612 3914 7609 3914 7608 3915 7609
      3917 7604 3919 7607 3920 7607 3922 7591
      3904 7593 3896 7595 3891 7594 3890 7613
      3901 7614
TIME...MOT...LOC 0408Z 237DEG 22KT 3914 7613 3906 7613
          3896 7617 3885 7616 3876 7608

$$

HEAVENER

302 
WWUS51 KPHI 030427
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1227 AM EDT THU JUL 3 2014

MDC035-041-030437-
/O.EXP.KPHI.SV.W.0072.000000T0000Z-140703T0430Z/
QUEEN ANNE'S MD-TALBOT MD-
1227 AM EDT THU JUL 3 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TALBOT AND
CENTRAL QUEEN ANNE'S COUNTIES WILL EXPIRE AT 1230 AM EDT...

LAT...LON 3910 7612 3914 7609 3914 7608 3915 7609
      3917 7604 3919 7607 3920 7607 3922 7591
      3904 7593 3896 7595 3891 7594 3890 7613
      3901 7614
TIME...MOT...LOC 0427Z 237DEG 22KT 3920 7600 3912 7600
          3902 7604 3891 7603 3882 7595

$$

HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 10:24 PM EDT	Special Weather Statement	PHI	Cecil	36 min
Jul 2, 10:50 PM EDT	Special Weather Statement	PHI	Talbot	55 min
Jul 2, 11:20 PM EDT	Special Weather Statement	PHI	Caroline, Queen Anne's	55 min
Jul 2, 11:47 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Talbot	58 min
Jul 3, 12:04 AM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's	56 min
Jul 3, 12:34 AM EDT	Areal Flood Advisory	PHI	Cecil, Kent, Queen Anne's	3 hr
Jul 3, 5:36 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent	69 min
Jul 3, 6:21 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	39 min
Jul 3, 7:00 PM EDT	Special Weather Statement	PHI	Caroline, Kent, Queen Anne's, Talbot	60 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2014 Every severe thunderstorm warning in 2014

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.