Alert archive / Maryland / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 109, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 2009, 9:10 PM EDT for Queen Anne's County, Talbot County, Maryland. It was in force for 24 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 26, 2009, 9:10 PM EDT (01:10 UTC)
- Expired
- Jun 26, 2009, 9:34 PM EDT
- In force
- 24 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 01:11 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 26, 2:42 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.2 hours before the alert went out and 106 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.
- Mixed-layer CAPE
- 2257 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1401 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 270110
SVRPHI
MDC035-041-270200-
/O.NEW.KPHI.SV.W.0109.090627T0110Z-090627T0200Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
910 PM EDT FRI JUN 26 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN TALBOT COUNTY IN EASTERN MARYLAND...
CENTRAL QUEEN ANNES COUNTY IN NORTHEAST MARYLAND...
* UNTIL 1000 PM EDT
* AT 909 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
GRASONVILLE...OR 17 MILES NORTHWEST OF EASTON...AND MOVING EAST AT
20 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
WYE MILLS AROUND 935 PM EDT...
CENTREVILLE AND 6 MILES NORTH OF SKIPTON AROUND 940 PM EDT...
STARR...CARVILLE AND 7 MILES NORTH OF CORDOVA AROUND 950 PM EDT...
HOPE AROUND 955 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND.
&&
LAT...LON 3899 7627 3898 7621 3901 7617 3904 7617
3910 7594 3887 7597 3891 7621 3893 7621
3894 7624 3892 7623 3892 7626
TIME...MOT...LOC 0110Z 269DEG 15KT 3898 7622
$$
SZATKOWSKI1 follow-up statement
000
WWUS51 KPHI 270134
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
934 PM EDT FRI JUN 26 2009
MDC035-041-270144-
/O.CAN.KPHI.SV.W.0109.000000T0000Z-090627T0200Z/
QUEEN ANNES MD-TALBOT MD-
934 PM EDT FRI JUN 26 2009
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TALBOT AND
CENTRAL QUEEN ANNES COUNTIES IS CANCELLED...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND.
LAT...LON 3899 7627 3898 7621 3901 7617 3904 7617
3910 7594 3887 7597 3891 7621 3893 7621
3894 7624 3892 7623 3892 7626
TIME...MOT...LOC 0134Z 269DEG 15KT 3898 7609
$$
SZATKOWSKINearby
Severe Thunderstorm Warnings in Maryland, 2009Every severe thunderstorm warning in 2009
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.