Alert archive / Maryland / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 114, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 28, 2007, 2:49 PM EDT for New Castle County, Delaware; Cecil County, Kent County, Queen Anne's County, Maryland. It was in force for 56 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 28, 2007, 2:49 PM EDT (18:49 UTC)
- Expired
- Jun 28, 2007, 3:45 PM EDT
- In force
- 56 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
Counties New Castle County, DE, Cecil County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 18:49 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 28, 2:07 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.8 hours before the alert went out and 25 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
- 253 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1224 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 281850
SVRPHI
DEC003-MDC015-029-035-281945-
/O.NEW.KPHI.SV.W.0114.070628T1849Z-070628T1945Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
249 PM EDT THU JUN 28 2007
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN CECIL COUNTY IN NORTHEAST MARYLAND...
KENT COUNTY IN NORTHEAST MARYLAND...
EASTERN QUEEN ANNES COUNTY IN NORTHEAST MARYLAND...
SOUTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
* UNTIL 345 PM EDT
* AT 248 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL. THIS
STORM WAS LOCATED NEAR CHESTERTOWN...OR ABOUT 29 MILES WEST OF
DOVER...AND MOVING EAST AT 40 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
CHURCH HILL BY 255 PM EDT...
SUDLERSVILLE AND 7 MILES SOUTH OF MILLINGTON BY 305 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 3931 7622 3896 7604 3913 7589 3929 7580
3936 7550 3954 7554 3958 7591
$$
NIERENBERG1 follow-up statement
000
WWUS51 KPHI 281922
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
321 PM EDT THU JUN 28 2007
DEC003-MDC015-281931-
/O.CAN.KPHI.SV.W.0114.000000T0000Z-070628T1945Z/
CECIL MD-NEW CASTLE DE-
321 PM EDT THU JUN 28 2007
...THE SEVERE THUNDERSTORM WARNING FOR NEW CASTLE AND CECIL COUNTIES
IS CANCELLED...
THE STORMS HAVE WEAKENED AND MOVED OUT OF THE COUNTY.
LAT...LON 3919 7613 3897 7636 3895 7604 3909 7585
3913 7575 3929 7579 3929 7576 3931 7583
3930 7590
$$
MDC029-035-281945-
/O.CON.KPHI.SV.W.0114.000000T0000Z-070628T1945Z/
KENT MD-QUEEN ANNES MD-
321 PM EDT THU JUN 28 2007
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR QUEEN ANNES AND SOUTHERN KENT COUNTIES...
AT 318 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS TO 60 MPH. THIS STORM WAS LOCATED NEAR
CHURCH HILL...MOVING SOUTHEAST AT 15 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
BARCLAY AND 6 MILES SOUTHWEST OF SUDLERSVILLE BY 340 PM EDT...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. THREE PEOPLE HAVE
ALREADY BEEN INJURED BY THE LIGHTNING. 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 3919 7613 3897 7636 3895 7604 3909 7585
3913 7575 3929 7579 3929 7576 3931 7583
3930 7590
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 9:06 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 84 min |
| Jun 27, 9:10 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 65 min |
| Jun 28, 3:35 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 40 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.