Alert archive / Maryland / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 39, NWS Philadelphia/Mount Holly

May 27, 2014Caroline County, Kent County, Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 27, 2014, 5:48 PM EDT for Caroline County, Kent County, Queen Anne's County, Maryland. It was in force for 42 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
May 27, 2014, 5:48 PM EDT (21:48 UTC)
Expired
May 27, 2014, 6:30 PM EDT
In force
42 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

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

The radar

The Dover AFB radar (KDOX), 58 km from the middle of the area, began a volume at 21:50 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
May 27, 2:13 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.8 hours before the alert went out and 34 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 2014-05-27Temperature 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 2014-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.193958Sfc1 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
1885 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
94 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.

140 
WUUS51 KPHI 272148
SVRPHI
MDC011-029-035-272230-
/O.NEW.KPHI.SV.W.0039.140527T2148Z-140527T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
548 PM EDT TUE MAY 27 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 630 PM EDT

* AT 546 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR OLD TOWN...MOVING EAST AT
  25 MPH. THIS STORM IS CAPABLE OF PRODUCING ONE INCH DIAMETER
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  STARKEY CORNER AND MORGNEC AROUND 555 PM EDT...
  CHURCH HILL AROUND 600 PM EDT...
  CRUMPTON AROUND 610 PM EDT...
  SUDLERSVILLE AND MILLINGTON AROUND 620 PM 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.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS SEVERE
THUNDERSTORM. 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 900 PM EDT
TUESDAY EVENING FOR NORTHEASTERN MARYLAND AND EASTERN PENNSYLVANIA. A
SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL MIDNIGHT EDT
WEDNESDAY MORNING FOR DELAWARE AND SOUTHERN NEW JERSEY AND SOUTHEAST
PENNSYLVANIA.

&&

LAT...LON 3931 7577 3906 7574 3907 7614 3924 7615
TIME...MOT...LOC 2147Z 274DEG 20KT 3914 7606

$$

FORECASTER: GORSE
2 follow-up statements
095 
WWUS51 KPHI 272205
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
605 PM EDT TUE MAY 27 2014

MDC011-029-035-272230-
/O.CON.KPHI.SV.W.0039.000000T0000Z-140527T2230Z/
KENT MD-CAROLINE MD-QUEEN ANNE'S MD-
605 PM EDT TUE MAY 27 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTHEASTERN QUEEN ANNE'S...NORTHEASTERN CAROLINE AND EAST
CENTRAL KENT COUNTIES...

AT 559 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR CHURCH HILL...OR 8 MILES NORTHEAST OF CENTERVILLE...
MOVING EAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  BARCLAY...SUDLERSVILLE AND 9 MILES SOUTH OF MILLINGTON BY 615 PM
  EDT...
  MARYDEL...TEMPLEVILLE AND HENDERSON BY 630 PM EDT...

THIS IS A DANGEROUS STORM. IN ADDITION TO 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 900 PM EDT
TUESDAY EVENING FOR NORTHEASTERN MARYLAND AND EASTERN PENNSYLVANIA. A
SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL MIDNIGHT EDT
WEDNESDAY MORNING FOR DELAWARE AND SOUTHERN NEW JERSEY AND SOUTHEAST
PENNSYLVANIA.

LAT...LON 3908 7609 3926 7605 3931 7577 3906 7574
TIME...MOT...LOC 2204Z 274DEG 20KT 3913 7594

$$

GORSE
455 
WWUS51 KPHI 272222
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
622 PM EDT TUE MAY 27 2014

MDC011-029-035-272231-
/O.EXP.KPHI.SV.W.0039.000000T0000Z-140527T2230Z/
KENT MD-CAROLINE MD-QUEEN ANNE'S MD-
622 PM EDT TUE MAY 27 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN QUEEN ANNE'S...
NORTHEASTERN CAROLINE AND EAST CENTRAL KENT COUNTIES WILL EXPIRE AT
630 PM EDT...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED SOME 
AND THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HEAVY RAIN, 
WIND GUSTS TO 40 MPH AND LIGHTNING WILL STILL OCCUR WITH THIS STORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR NORTHEASTERN MARYLAND AND EASTERN PENNSYLVANIA. A
SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL MIDNIGHT EDT
WEDNESDAY MORNING FOR DELAWARE AND SOUTHERN NEW JERSEY AND SOUTHEAST
PENNSYLVANIA.

LAT...LON 3908 7609 3926 7605 3931 7577 3906 7574
TIME...MOT...LOC 2221Z 274DEG 20KT 3912 7582

$$

GORSE

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 2:39 PM EDTSpecial Weather StatementPHIQueen Anne's36 min
May 27, 5:34 PM EDTSpecial Weather StatementPHIKent, Queen Anne's41 min
May 27, 5:56 PM EDTSevere Thunderstorm WarningPHICecil64 min
May 27, 6:49 PM EDTSpecial Weather StatementPHICaroline, Queen Anne's56 min
May 27, 7:15 PM EDTSevere Thunderstorm WarningPHICaroline60 min
May 27, 7:23 PM EDTSpecial Weather StatementPHICaroline, Queen Anne's, Talbot52 min

Nearby

Severe Thunderstorm Warnings in Maryland, 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.