Alert archive / Maryland / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 129, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 10, 2007, 3:11 PM EDT for Caroline County, Queen Anne's County, Maryland; Kent County, Delaware. It was in force for 49 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
- Jul 10, 2007, 3:11 PM EDT (19:11 UTC)
- Expired
- Jul 10, 2007, 4:00 PM EDT
- In force
- 49 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
Counties Kent County, DE, Caroline County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 42 km from the middle of the area, began a volume at 19:12 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 12:00Z, 7.2 hours before the alert went out and 50 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
- 1638 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 1336 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 17 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 101911 SVRPHI DEC001-MDC011-035-102000- /O.NEW.KPHI.SV.W.0129.070710T1911Z-070710T2000Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 311 PM EDT TUE JUL 10 2007 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL KENT COUNTY IN CENTRAL DELAWARE... NORTH CENTRAL CAROLINE COUNTY IN EASTERN MARYLAND... EAST CENTRAL QUEEN ANNES COUNTY IN NORTHEAST MARYLAND... * UNTIL 400 PM EDT * AT 308 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 HARTLY...OR ABOUT 12 MILES WEST OF DOVER...AND MOVING WEST AT 5 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... TEMPLEVILLE BY 325 PM EDT... LAT...LON 3902 7587 3904 7567 3918 7567 3918 7586 $$ AMC
1 follow-up statement
000 WWUS51 KPHI 101934 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 333 PM EDT TUE JUL 10 2007 DEC001-MDC011-035-102000- /O.CON.KPHI.SV.W.0129.000000T0000Z-070710T2000Z/ KENT DE-CAROLINE MD-QUEEN ANNES MD- 333 PM EDT TUE JUL 10 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT FOR EAST CENTRAL QUEEN ANNES...NORTHEASTERN CAROLINE AND SOUTHWESTERN KENT COUNTIES... AT 329 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR MARYDEL...OR ABOUT 12 MILES WEST OF DOVER...MOVING WEST AT 5 MPH. OTHER STRONG TO SEVERE STORMS HAVE FORMED SOUTHWARD ALONG THE BORDER BETWEEN KENT COUNTY DE AND CAROLINE COUNTY MD. THE SEVERE THUNDERSTORM WILL BE NEAR... MARYDEL BY 345 PM EDT... HENDERSON...TEMPLEVILLE...GOLDSBORO AND 9 MILES NORTH OF GREENSBORO BY 400 PM EDT... LAT...LON 3883 7582 3884 7565 3918 7567 3918 7586 $$ AMC
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 1:04 PM EDT | Heat Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 5 hr |
| Jul 10, 3:59 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 31 min |
| Jul 10, 4:14 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 34 min |
| Jul 10, 3:34 PM EDT | Flash Flood Warning | PHI | Sussex | 3 hr |
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.