Alert archive / Maryland / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 16, NWS Philadelphia/Mount Holly

May 16, 2007Caroline County, Talbot County, Maryland; Kent County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 16, 2007, 5:41 PM EDT for Caroline County, Talbot County, Maryland; Kent County, Delaware. It was in force for 79 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 16, 2007, 5:41 PM EDT (21:41 UTC)
Expired
May 16, 2007, 7:00 PM EDT
In force
79 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Kent County, DE, Caroline County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 30 km from the middle of the area, began a volume at 21:41 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 16, 1:26 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.7 hours before the alert went out and 67 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 2007-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 2007-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 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
18 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
1421 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
138 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.

000 
WUUS51 KPHI 162143
SVRPHI
DEC001-MDC011-041-162300-
/O.NEW.KPHI.SV.W.0016.070516T2141Z-070516T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
541 PM EDT WED MAY 16 2007

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KENT COUNTY IN CENTRAL DELAWARE...
  THIS INCLUDES THE CITY OF DOVER...
  CAROLINE COUNTY IN EASTERN MARYLAND...
  EASTERN TALBOT COUNTY IN EASTERN MARYLAND...

* UNTIL 700 PM EDT

* AT 537 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A LINE OF THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THE STORMS WERE MOVING OUT OF KENT AND QUEEN ANNES
  COUNTIES IN MARYLAND...AND WERE MOVING SOUTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  8 MILES NORTHEAST OF QUEEN ANNE BY 555 PM EDT...
  GOLDSBORO AND RIDGELY BY 600 PM EDT...
  GREENSBORO AND 7 MILES NORTHEAST OF DENTON BY 605 PM EDT...
  8 MILES SOUTHWEST OF VIOLA BY 620 PM EDT...
  HARRINGTON BY 625 PM EDT...
  9 MILES SOUTHWEST OF FREDERICA BY 630 PM EDT...

LAT...LON 3913 7579 3894 7594 3884 7616 3864 7606
      3868 7574 3883 7573 3886 7555 3898 7529
      3932 7550

$$

MPD

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 4:16 PM EDTSevere Thunderstorm WarningPHICecil44 min
May 16, 5:12 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's48 min
May 16, 4:21 PM EDTSevere Thunderstorm WarningPHINew Castle39 min
May 16, 5:20 PM EDTSevere Thunderstorm WarningPHINew Castle40 min
May 16, 6:35 PM EDTSevere Thunderstorm WarningPHISussex70 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2007Severe Thunderstorm Warnings in Delaware, 2007Every severe thunderstorm warning in 2007

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.