Alert archive / Maryland / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 230, NWS Philadelphia/Mount Holly

August 7, 2006Queen Anne's County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 7, 2006, 8:37 PM EDT for 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 7, 2006, 8:37 PM EDT (00:37 UTC)
Expired: Aug 7, 2006, 9:30 PM EDT
In force: 53 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

Counties Queen Anne's County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 68 km from the middle of the area, began a volume at 00:41 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 nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 00:00Z, 0.6 hours before the alert went out and 66 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1786 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1135 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KPHI 080037
SVRPHI
MDC035-041-080130-
/O.NEW.KPHI.SV.W.0230.060808T0037Z-060808T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
837 PM EDT MON AUG 7 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN TALBOT COUNTY IN EASTERN MARYLAND
  SOUTHWESTERN QUEEN ANNES COUNTY IN NORTHEAST MARYLAND

* UNTIL 930 PM EDT

* AT 835 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR CHESTER...OR ABOUT 29 MILES
  SOUTHEAST OF BALTIMORE...AND MOVING SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GRASONVILLE BY 850 PM EDT...
  7 MILES NORTHEAST OF ST. MICHAELS BY 900 PM EDT...
  EASTON...CORDOVA AND 8 MILES SOUTHWEST OF QUEEN ANNE BY 920 PM
  EDT...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

LAT...LON 3904 7630 3897 7625 3902 7616 3896 7596
      3879 7597 3873 7602 3864 7600 3883 7631
      3886 7626 3881 7622 3881 7621 3892 7631
      3890 7633 3886 7637 3886 7637 3894 7637

$$

OHARA

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 9:26 PM EDT	Severe Thunderstorm Warning	PHI	Queen Anne's, Talbot	49 min
Aug 7, 9:47 PM EDT	Severe Thunderstorm Warning	PHI	Caroline	43 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2006 Every severe thunderstorm warning in 2006

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.