Alert archive / Maryland / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 65, NWS Philadelphia/Mount Holly

June 21, 2016Caroline County, Queen Anne's County, Talbot County, Maryland; Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 21, 2016, 3:52 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland; Sussex County, Delaware. It was in force for 53 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
Jun 21, 2016, 3:52 PM EDT (19:52 UTC)
Expired
Jun 21, 2016, 4:45 PM EDT
In force
53 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

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

The radar

The Dover AFB radar (KDOX), 58 km from the middle of the area, began a volume at 19:55 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
Jun 21, 1:06 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.9 hours before the alert went out and 83 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 2016-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1292 joules per kilogram.LCLLFCEL10008507005003002001001 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 2016-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 150 square meters per square second.19395878Sfc1 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
1292 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1267 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
150 m²/s²
0-3 km storm-relative helicity
191 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

The text

As transmitted.

222 
WUUS51 KPHI 211952
SVRPHI
DEC005-MDC011-035-041-212045-
/O.NEW.KPHI.SV.W.0065.160621T1952Z-160621T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
352 PM EDT TUE JUN 21 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN SUSSEX COUNTY IN SOUTHERN DELAWARE...
  TALBOT COUNTY IN EASTERN MARYLAND...
  SOUTHWESTERN QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...
  SOUTHERN CAROLINE COUNTY IN EASTERN MARYLAND...

* UNTIL 445 PM EDT

* AT 351 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR TILGHMAN
  ISLAND...OR NEAR DEALE...MOVING SOUTHEAST AT 45 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  TALBOT AROUND 400 PM EDT. 
  ST. MICHAELS AROUND 405 PM EDT. 
  TRAPPE AND HAMBLETON AROUND 415 PM EDT. 
  WINDYHILL AROUND 420 PM EDT. 
  CHOPTANK AROUND 425 PM EDT. 
  SHARPTOWN AROUND 445 PM EDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
BLADES... BETHEL AND GALESTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

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 3846 7569 3869 7577 3868 7593 3857 7604
      3876 7622 3871 7628 3878 7629 3876 7632
      3867 7634 3883 7631 3888 7637 3888 7636
      3883 7629 3891 7635 3892 7635 3878 7621
      3888 7619 3861 7542 3845 7552
TIME...MOT...LOC 1951Z 299DEG 41KT 3877 7643 

HAIL...1.00IN
WIND...60MPH
 
$$

ROBERTSON
1 follow-up statement
924 
WWUS51 KPHI 212040
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
440 PM EDT TUE JUN 21 2016

DEC005-MDC011-035-041-212050-
/O.EXP.KPHI.SV.W.0065.000000T0000Z-160621T2045Z/
SUSSEX DE-TALBOT MD-QUEEN ANNE'S MD-CAROLINE MD-
440 PM EDT TUE JUN 21 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SUSSEX...
TALBOT...SOUTHWESTERN QUEEN ANNE'S AND SOUTHERN CAROLINE COUNTIES
WILL EXPIRE AT 445 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND HAVE EXITED THE WARNED AREA. THEREFORE THE WARNING WILL
BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FOR
SOUTHERN DELAWARE...AND EASTERN AND NORTHEASTERN MARYLAND.

LAT...LON 3846 7569 3869 7577 3868 7593 3857 7604
      3876 7622 3871 7628 3878 7629 3876 7632
      3867 7634 3883 7631 3888 7637 3888 7636
      3883 7629 3891 7635 3892 7635 3878 7621
      3888 7619 3861 7542 3845 7552
TIME...MOT...LOC 2039Z 299DEG 41KT 3877 7643 

$$

ROBERTSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 3:37 AM EDTSpecial Weather StatementPHICaroline83 min
Jun 21, 1:52 PM EDTSevere Thunderstorm WarningPHICecil, Kent, Queen Anne's53 min
Jun 21, 2:08 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's, Talbot67 min
Jun 21, 2:17 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's58 min
Jun 21, 2:32 PM EDTTornado WarningPHIKent, Queen Anne's, Talbot28 min
Jun 21, 2:51 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's54 min
Jun 21, 2:55 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's, Talbot65 min
Jun 21, 3:36 PM EDTSevere Thunderstorm WarningPHICaroline, Talbot54 min
Jun 21, 6:36 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's, Talbot54 min
Jun 21, 7:20 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's40 min
Jun 21, 4:28 PM EDTSpecial Weather StatementPHISussex62 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2016Severe Thunderstorm Warnings in Delaware, 2016Every severe thunderstorm warning in 2016

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.