Alert archive / Maryland / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 71, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 12, 2007, 4:39 PM EDT for Queen Anne's County, Maryland. It was in force for 51 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 12, 2007, 4:39 PM EDT (20:39 UTC)
- Expired
- Jun 12, 2007, 5:30 PM EDT
- In force
- 51 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 51 km from the middle of the area, began a volume at 20:40 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 12, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.7 hours before the alert went out and 43 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
- 186 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1120 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 122038
SVRPHI
MDC035-122130-
/O.NEW.KPHI.SV.W.0071.070612T2039Z-070612T2130Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
439 PM EDT TUE JUN 12 2007
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN QUEEN ANNES COUNTY IN NORTHEAST MARYLAND...
* UNTIL 530 PM EDT
* AT 432 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
SUDLERSVILLE...OR ABOUT 20 MILES WEST OF DOVER...AND MOVING SOUTH
AT 10 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
RURAL CENTRAL QUEEN ANNES COUNTY AT 450 PM EDT
RURAL SOUTHERN QUEEN ANNES COUNTY AT 530 PM EDT
LAT...LON 3924 7578 3923 7595 3901 7603 3894 7601
3900 7592 3915 7578
$$
MPD2 follow-up statements
000
WWUS51 KPHI 122051
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
450 PM EDT TUE JUN 12 2007
MDC035-122130-
/O.CON.KPHI.SV.W.0071.000000T0000Z-070612T2130Z/
QUEEN ANNES MD-
450 PM EDT TUE JUN 12 2007
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR EASTERN QUEEN ANNES COUNTY...
AT 449 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR BARCLAY...OR ABOUT 18 MILES WEST OF DOVER...MOVING
SOUTHWEST AT 10 MPH. THE STRONGEST PART OF THIS STORM WAS BETWEEN
CRUMPTON AND KINGSTOWN.
THE SEVERE THUNDERSTORM WILL BE NEAR...
RURAL NORTHERN QUEEN ANNES COUNTY AT 500 PM EDT
LAT...LON 3924 7578 3923 7595 3901 7603 3894 7601
3900 7592 3915 7578
$$
JRP000
WWUS51 KPHI 122114
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
512 PM EDT TUE JUN 12 2007
MDC035-122130-
/O.CON.KPHI.SV.W.0071.000000T0000Z-070612T2130Z/
QUEEN ANNES MD-
512 PM EDT TUE JUN 12 2007
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR QUEEN ANNES COUNTY...
AT 506 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
THIS STORM WAS LOCATED NEAR CENTERVILLE. THIS STORM WAS MOVING
SOUTHWEST AT AROUND 10 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
EAST OF AND NEAR CHESTER BY 530 PM EDT...
LAT...LON 3921 7583 3917 7604 3904 7612 3895 7632
3889 7618 3894 7601 3900 7592 3909 7582
$$
MPDThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 4:26 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 34 min |
| Jun 12, 4:57 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 48 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 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.