Alert archive / Maryland / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 127, NWS Philadelphia/Mount Holly

July 14, 2014Caroline County, Queen Anne's County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 14, 2014, 7:16 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 74 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 14, 2014, 7:16 PM EDT (23:16 UTC)
Expired: Jul 14, 2014, 8:30 PM EDT
In force: 74 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

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

The radar

The Dover AFB radar (KDOX), 64 km from the middle of the area, began a volume at 23:16 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, 7:32 PM EDT	TSTM WND DMG	Easton, MD	LARGE TREE DOWN BLOCKING THE INTERSECTION OF PROBASCO LANDING ROAD AND LONGWOODS ROAD.

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, 11.3 hours before the alert went out and 71 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.

743 
WUUS51 KPHI 142316
SVRPHI
MDC011-035-041-150030-
/O.NEW.KPHI.SV.W.0127.140714T2316Z-140715T0030Z/

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 830 PM EDT

* AT 713 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
  CHESTER TO ST. MICHAELS TO TAYLORS ISLAND...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...
  OXFORD AND COPPERVILLE AROUND 725 PM EDT...
  WYE MILLS AND EASTON AROUND 735 PM EDT...
  STARR AND TRAPPE AROUND 740 PM EDT...
  QUEEN ANNE AND WINDYHILL AROUND 745 PM EDT...
  JUMPTOWN AND GRIFFIN AROUND 750 PM EDT...
  RIDGELY AND OAKLAND AROUND 755 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 3904 7631 3898 7621 3904 7620 3903 7574
      3865 7571 3870 7583 3869 7589 3857 7604
      3873 7626 3868 7635 3877 7638 3878 7638
      3876 7636 3887 7625 3881 7621 3882 7620
      3894 7624 3890 7624 3893 7628 3883 7638
TIME...MOT...LOC 2316Z 277DEG 26KT 3894 7624 3877 7624
          3852 7631

$$

FORECASTER:  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, 6:28 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Cecil, Kent, Queen Anne's	62 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.