Alert archive / Maryland / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 15, NWS Philadelphia/Mount Holly

May 28, 2013Caroline County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 28, 2013, 8:43 PM EDT for Caroline County, Talbot County, Maryland. It was in force for 92 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 28, 2013, 8:43 PM EDT (00:43 UTC)
Expired
May 28, 2013, 10:15 PM EDT
In force
92 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Caroline County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 48 km from the middle of the area, began a volume at 00:46 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

Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.7 hours before the alert went out and 96 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, Wallops Is Stn, VA at 00:00Z on 2013-05-29Temperature 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, Wallops Is Stn, VA at 00:00Z on 2013-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 square meters per square second.1939Sfc1 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
1274 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
182 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.

060 
WUUS51 KPHI 290043
SVRPHI
MDC011-041-290215-
/O.NEW.KPHI.SV.W.0015.130529T0043Z-130529T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
843 PM EDT TUE MAY 28 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
  SOUTHERN TALBOT COUNTY IN EASTERN MARYLAND...

* UNTIL 1015 PM EDT

* AT 841 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR DARES BEACH...MOVING EAST
  AT 20 MPH. THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  OXFORD AROUND 925 PM EDT...
  TRAPPE AND HAMBLETON AROUND 940 PM EDT...
  TANYARD AROUND 950 PM EDT...
  WINDYHILL AND CHOPTANK AROUND 955 PM EDT...
  PRESTON AROUND 1005 PM EDT...
  FEDERALSBURG AND AGNER AROUND 1015 PM EDT...

LAT...LON 3872 7635 3873 7626 3872 7626 3873 7624
      3879 7572 3865 7571 3870 7583 3869 7589
      3866 7595 3860 7598 3857 7604 3860 7608
      3859 7612 3872 7626 3870 7627 3871 7631
      3867 7633 3868 7636
TIME...MOT...LOC 0043Z 272DEG 18KT 3865 7643

$$

NIERENBERG/MARKIEWICZ
1 follow-up statement
679 
WWUS51 KPHI 290135
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
935 PM EDT TUE MAY 28 2013

MDC011-041-290145-
/O.CAN.KPHI.SV.W.0015.000000T0000Z-130529T0215Z/
CAROLINE MD-TALBOT MD-
935 PM EDT TUE MAY 28 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN TALBOT AND SOUTHERN
CAROLINE COUNTIES IS CANCELLED...

THE STORM HAS WEAKENED TO BELOW SEVERE LIMITS...THEREFORE THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 3872 7635 3873 7626 3872 7626 3873 7624
      3879 7572 3865 7571 3870 7583 3869 7589
      3866 7595 3860 7598 3857 7604 3860 7608
      3859 7612 3872 7626 3870 7627 3871 7631
      3867 7633 3868 7636
TIME...MOT...LOC 0135Z 272DEG 18KT 3864 7610

$$

FORECASTER:

Nearby

Severe Thunderstorm Warnings in Maryland, 2013Every severe thunderstorm warning in 2013

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.