Alert archive / Maryland / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 6, NWS Philadelphia/Mount Holly

March 12, 20145 counties in Maryland; Kent County, New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 12, 2014, 7:15 PM EDT for 5 counties in Maryland; Kent County, New Castle County, Delaware. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 12, 2014, 7:15 PM EDT (23:15 UTC)
Expired
Mar 12, 2014, 8:00 PM EDT
In force
45 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Kent County, DE, New Castle County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 65 km from the middle of the area, began a volume at 23:17 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 12, 4:58 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.3 hours before the alert went out and 54 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-pSkew-T log-p diagram, Phillips Aaf/Abe, MD at 12:00Z on 2014-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2014-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2062 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
248 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.

710 
WUUS51 KPHI 122315
SVRPHI
DEC001-003-MDC011-015-029-035-041-130000-
/O.NEW.KPHI.SV.W.0006.140312T2315Z-140313T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
715 PM EDT WED MAR 12 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
  SOUTHEASTERN CECIL COUNTY IN NORTHEAST MARYLAND...
  KENT COUNTY IN NORTHEAST MARYLAND...
  NORTHWESTERN KENT COUNTY IN CENTRAL DELAWARE...
  CAROLINE COUNTY IN EASTERN MARYLAND...
  QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND...
  TALBOT COUNTY IN EASTERN MARYLAND...

* UNTIL 800 PM EDT

* AT 713 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF INCREASINGLY STRONGER AND BECOMING SEVERE THUNDERSTORMS. 
  THESE STORMS EXTENDED FROM BETTERTON TO ROCK HALL TO DARES BEACH...
  MOVING EAST AT 40 MPH. THESE STORMS ARE CAPABLE OF PRODUCING 
  DAMAGING WINDS IN EXCESS OF 60 MPH. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  HOLLYWOOD BEACH AND ROMANCOKE AROUND 720 PM EDT...
  CAYOTS AND GRASONVILLE AROUND 725 PM EDT...
  GRASONVILLE AND ST. MICHAELS AROUND 730 PM EDT...
  WARWICK AND MASSEY AROUND 735 PM EDT...
  MIDDLETOWN AND MILLINGTON AROUND 740 PM EDT...
  EASTON AND SUDLERSVILLE AROUND 745 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS SEVERE THUNDERSTORM MAY CONTAIN LITTLE OR NO LIGHTNING. DO NOT
WAIT TO HEAR THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
WEDNESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY.

&&

LAT...LON 3887 7625 3881 7621 3882 7620 3894 7624
      3884 7638 3886 7639 3904 7631 3899 7627
      3900 7618 3914 7629 3932 7619 3943 7601
      3952 7599 3945 7556 3941 7552 3860 7598
      3859 7612 3873 7626 3867 7635 3877 7639
TIME...MOT...LOC 2315Z 284DEG 33KT 3943 7600 3919 7626
          3865 7647

$$

TFG
1 follow-up statement
830 
WWUS51 KPHI 122336
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
736 PM EDT WED MAR 12 2014

DEC001-003-MDC011-015-029-035-041-130000-
/O.CON.KPHI.SV.W.0006.000000T0000Z-140313T0000Z/
NEW CASTLE DE-CECIL MD-KENT MD-KENT DE-CAROLINE MD-QUEEN ANNE'S MD-
TALBOT MD-
736 PM EDT WED MAR 12 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR TALBOT...QUEEN ANNE'S...CAROLINE...NORTHWESTERN KENT...KENT...
SOUTHEASTERN CECIL AND SOUTHERN NEW CASTLE COUNTIES...

AT 731 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BOHEMIAS MILLS TO KENNEDYVILLE TO CHESTERTOWN TO
LANGFORD TO ROCK HALL TO GRASONVILLE TO 8 MILES WEST OF OXFORD...
MOVING EAST AT 35 MPH.

TERMINAL DOPPLER RADARS ARE CONTINUING TO SHOW AROUND 60 MPH OF WIND
WITH THE STRONGEST STORMS IN THIS LINE.

SEVERE THUNDERSTORMS WILL BE NEAR...
GALENA AND WYE MILLS AROUND 740 PM EDT...
ODESSA AND CENTREVILLE AROUND 745 PM EDT...
MILLINGTON AND EASTON AROUND 750 PM EDT...
SUDLERSVILLE AND HILLSBORO AROUND 755 PM EDT...
WINDYHILL AND GREEN SPRING AROUND 800 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS SEVERE THUNDERSTORM MAY CONTAIN LITTLE OR NO LIGHTNING. DO NOT
WAIT TO HEAR THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
WEDNESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY.

&&

LAT...LON 3887 7625 3884 7625 3881 7621 3882 7620
      3892 7622 3894 7624 3898 7623 3900 7618
      3914 7628 3932 7613 3949 7590 3945 7556
      3941 7552 3860 7598 3859 7612 3873 7626
      3871 7631 3867 7635 3868 7635
TIME...MOT...LOC 2335Z 275DEG 31KT 3947 7580 3934 7596
          3923 7606 3917 7611 3908 7622 3894 7616
          3869 7627

$$

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 12, 4:05 AM EDTWind AdvisoryPHICaroline, Cecil, Kent, Queen Anne's, Talbot35 hr
Mar 12, 5:56 PM EDTSpecial Weather StatementPHICecil79 min
Mar 12, 6:58 PM EDTSpecial Weather StatementPHICecil, Kent, Queen Anne's, Talbot77 min
Mar 12, 7:59 PM EDTSpecial Weather StatementPHICaroline76 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2014Severe Thunderstorm Warnings in Delaware, 2014Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.