Alert archive / Maryland / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 166, NWS Philadelphia/Mount Holly

August 1, 2016Caroline County, Queen Anne's County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 1, 2016, 6:25 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. 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
Aug 1, 2016, 6:25 PM EDT (22:25 UTC)
Expired
Aug 1, 2016, 7:18 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 Caroline County, MD, Queen Anne's County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 60 km from the middle of the area, began a volume at 22:27 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 nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 10.4 hours before the alert went out and 112 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, Washington/Dulle, VA at 12:00Z on 2016-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 230 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, Washington/Dulle, VA at 12:00Z on 2016-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -41 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
230 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
1006 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
-41 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

As transmitted.

120 
WUUS51 KPHI 012225
SVRPHI
MDC011-035-041-012330-
/O.NEW.KPHI.SV.W.0166.160801T2225Z-160801T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
625 PM EDT MON AUG 1 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

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

* UNTIL 730 PM EDT

* AT 624 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR SKIPTON...OR 7
  MILES NORTH OF EASTON...MOVING SOUTHEAST AT 20 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. 

* LOCATIONS IMPACTED INCLUDE...
  EASTON...TRAPPE...ST. MICHAELS...PRESTON...OXFORD...CHOPTANK...
  COPPERVILLE...HARMONY...TANYARD...SKIPTON...WYE MILLS...AGNER...
  WINDYHILL...GRIFFIN...MATTHEWS...CORDOVA AND HAMBLETON.

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.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3883 7626 3881 7621 3878 7621 3879 7619
      3888 7620 3897 7609 3876 7573 3870 7580
      3871 7584 3868 7593 3860 7599 3870 7619
      3873 7624 3874 7621 3876 7622 3875 7626
      3878 7629 3878 7632
TIME...MOT...LOC 2224Z 311DEG 17KT 3887 7612 

HAIL...1.00IN
WIND...60MPH
 
$$
2 follow-up statements
709 
WWUS51 KPHI 012245
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
645 PM EDT MON AUG 1 2016

MDC035-012255-
/O.CAN.KPHI.SV.W.0166.000000T0000Z-160801T2330Z/
QUEEN ANNE'S MD-
645 PM EDT MON AUG 1 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL QUEEN ANNE'S
COUNTY IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3880 7608 3888 7597 3876 7573 3870 7580
      3871 7584 3868 7593 3860 7599 3870 7619
      3872 7622 3875 7616
TIME...MOT...LOC 2245Z 311DEG 17KT 3882 7604 

$$

MDC011-041-012330-
/O.CON.KPHI.SV.W.0166.000000T0000Z-160801T2330Z/
TALBOT MD-CAROLINE MD-
645 PM EDT MON AUG 1 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR CENTRAL TALBOT AND SOUTHERN CAROLINE COUNTIES...

AT 645 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR EASTON...MOVING
SOUTHEAST AT 20 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. 

LOCATIONS IMPACTED INCLUDE...
EASTON...TRAPPE...PRESTON...OXFORD...WINDYHILL...CHOPTANK...HARMONY...
MATTHEWS...TANYARD...AGNER...HAMBLETON AND CORDOVA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 3880 7608 3888 7597 3876 7573 3870 7580
      3871 7584 3868 7593 3860 7599 3870 7619
      3872 7622 3875 7616
TIME...MOT...LOC 2245Z 311DEG 17KT 3882 7604 

HAIL...1.00IN
WIND...60MPH
 
$$
344 
WWUS51 KPHI 012318
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
718 PM EDT MON AUG 1 2016

MDC011-041-012321-
/O.CAN.KPHI.SV.W.0166.000000T0000Z-160801T2330Z/
TALBOT MD-CAROLINE MD-
718 PM EDT MON AUG 1 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL TALBOT AND SOUTHERN
CAROLINE COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA, THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3880 7608 3888 7597 3876 7573 3870 7580
      3871 7584 3868 7593 3860 7599 3870 7619
      3872 7622 3875 7616
TIME...MOT...LOC 2310Z 311DEG 17KT 3874 7592 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 1:41 PM EDTSpecial Weather StatementPHICecil94 min
Aug 1, 3:18 PM EDTSpecial Weather StatementPHICecil87 min
Aug 1, 5:43 PM EDTSevere Thunderstorm WarningPHIQueen Anne's, Talbot62 min

Nearby

Severe Thunderstorm Warnings in Maryland, 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.