Alert archive / Maryland / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 125, NWS Philadelphia/Mount Holly

July 14, 20144 counties in Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 14, 2014, 6:28 PM EDT for 4 counties in Maryland. It was in force for 62 min. 2 reports 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 14, 2014, 6:28 PM EDT (22:28 UTC)
Expired: Jul 14, 2014, 7:30 PM EDT
In force: 62 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD

The radar

The Dover AFB radar (KDOX), 71 km from the middle of the area, began a volume at 22:30 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 14, 7:00 PM EDT	TSTM WND DMG	Northeast Heights, MD	TREES DOWN IN NORTHEAST.
Jul 14, 7:05 PM EDT	TSTM WND DMG	Chesapeake City, MD	TREES DOWN IN CHESAPEAKE CITY.

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
Jul 14, 1:24 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.5 hours before the alert went out and 29 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: 483 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 844 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 125 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.

857 
WUUS51 KPHI 142228
SVRPHI
MDC011-015-029-035-142330-
/O.NEW.KPHI.SV.W.0125.140714T2228Z-140714T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
628 PM EDT MON JUL 14 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CECIL COUNTY IN NORTHEAST MARYLAND...
  KENT COUNTY IN NORTHEAST MARYLAND...
  NORTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
  QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...

* UNTIL 730 PM EDT

* AT 626 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
  ABERDEEN TO LANGFORD TO ROMANCOKE...MOVING EAST AT 30 MPH. THESE
  STORMS ARE CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WOODLAWN AND WEST NOTTINGHAM AROUND 635 PM EDT...
  WEST NOTTINGHAM AND RISING SUN AROUND 640 PM EDT...
  CHARLESTOWN AND FARMINGTON AROUND 645 PM EDT...
  NORTH EAST AND NORTHEAST AROUND 650 PM EDT...
  PLEASANT HILL AND BLAKE AROUND 655 PM EDT...
  CHERRY HILL AND ANDORA AROUND 700 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS LINE OF SEVERE
THUNDERSTORMS...WHICH COULD FLOOD LOW LYING AREAS QUICKLY AND COVER
ROADS WITH WATER. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE
ROAD.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS LINE OF
SEVERE THUNDERSTORMS. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...
IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT MONDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
EASTERN PENNSYLVANIA.

&&

LAT...LON 3899 7628 3898 7621 3900 7618 3903 7625
      3919 7628 3930 7619 3932 7619 3943 7601
      3952 7599 3955 7603 3954 7608 3957 7608
      3971 7622 3972 7579 3889 7573 3891 7595
      3892 7594 3894 7608 3892 7611 3893 7628
TIME...MOT...LOC 2228Z 265DEG 24KT 3954 7614 3921 7614
          3888 7630

$$

FORECASTER: SZATKOWSKI

1 follow-up statement

981 
WWUS51 KPHI 142308
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
708 PM EDT MON JUL 14 2014

MDC011-015-029-035-142330-
/O.CON.KPHI.SV.W.0125.000000T0000Z-140714T2330Z/
CECIL MD-KENT MD-CAROLINE MD-QUEEN ANNE'S MD-
708 PM EDT MON JUL 14 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR QUEEN ANNE'S...NORTHERN CAROLINE...EASTERN KENT AND EASTERN CECIL
COUNTIES...

AT 705 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BRANTWOOD TO MILLINGTON TO HILLSBORO...OR ALONG A LINE
EXTENDING FROM 7 MILES SOUTHEAST OF NORTHEAST TO 17 MILES WEST OF
DOVER TO 11 MILES SOUTHEAST OF CENTERVILLE...MOVING EAST AT 30 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  TEMPLEVILLE...RIDGELY AND OAKLAND BY 715 PM EDT...
  MARYDEL...HENDERSON...GOLDSBORO AND GREENSBORO BY 720 PM EDT...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT MONDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
EASTERN PENNSYLVANIA.

LAT...LON 3899 7628 3898 7621 3900 7618 3903 7625
      3909 7621 3923 7598 3938 7598 3950 7594
      3971 7599 3972 7579 3889 7573 3891 7595
      3892 7594 3894 7608 3892 7611 3893 7628
TIME...MOT...LOC 2308Z 265DEG 24KT 3956 7580 3923 7580
          3890 7596

$$

SZATKOWSKI

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 9:26 PM EDT	Special Weather Statement	PHI	Cecil, Kent	64 min
Jul 13, 10:02 PM EDT	Special Weather Statement	PHI	Cecil, Kent, Queen Anne's	58 min
Jul 13, 10:14 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent	46 min
Jul 13, 10:48 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Cecil, Kent, Queen Anne's	37 min
Jul 14, 3:54 AM EDT	Flash Flood Watch	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	45 hr
Jul 14, 6:04 PM EDT	Special Weather Statement	PHI	Caroline, Cecil, Kent, Queen Anne's	56 min
Jul 14, 7:16 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	74 min
Jul 14, 7:49 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's	51 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.