Alert archive / Maryland / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 68, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 21, 2017, 7:42 PM EDT for Kent County, Delaware; Caroline County, Queen Anne's County, Maryland. It was in force for 36 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 21, 2017, 7:42 PM EDT (23:42 UTC)
- Expired
- Jun 21, 2017, 8:18 PM EDT
- In force
- 36 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Caroline County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 36 km from the middle of the area, began a volume at 23:43 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.7 hours before the alert went out and 132 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1471 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- -98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
379
WUUS51 KPHI 212342
SVRPHI
DEC001-MDC011-035-220030-
/O.NEW.KPHI.SV.W.0068.170621T2342Z-170622T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
742 PM EDT WED JUN 21 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Kent County in central Delaware...
Northeastern Queen Anne's County in northeastern Maryland...
Northeastern Caroline County in eastern Maryland...
* Until 830 PM EDT
* At 742 PM EDT, severe thunderstorms were located along a line
extending from Church Hill to Dover Speedway to near Woodland
Beach, moving southeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Dover, Camden, Greensboro, Oakland, Cheswold, Church Hill,
Sudlersville, Bowers, Goldsboro, Woodside, Viola, Hartly, Rising
Sun-Lebanon, Hazlettville, Dover Base Housing, Dover Speedway,
Sandtown, Rising Sun, Carville and Hope.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
In addition to damaging winds...frequent cloud to ground lightning
is occurring with this storm. Move indoors immediately.
Remember...if you can hear thunder...you are close enough to be
struck by lightning.
&&
LAT...LON 3916 7601 3922 7586 3923 7558 3929 7545
3922 7537 3905 7537 3895 7531 3896 7539
3894 7567 3897 7585 3905 7602
TIME...MOT...LOC 2342Z 295DEG 30KT 3915 7595 3918 7551 3929 7540
HAIL...<.75IN
WIND...60MPH
$$
JRK1 follow-up statement
861
WWUS51 KPHI 220018
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
818 PM EDT WED JUN 21 2017
DEC001-MDC011-035-220028-
/O.CAN.KPHI.SV.W.0068.000000T0000Z-170622T0030Z/
Kent DE-Queen Anne's MD-Caroline MD-
818 PM EDT WED JUN 21 2017
...THE SEVERE THUNDERSTORM WARNING FOR KENT...NORTHEASTERN QUEEN
ANNE'S AND NORTHEASTERN CAROLINE COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore the warning has
been cancelled.
LAT...LON 3916 7601 3922 7586 3923 7558 3929 7545
3922 7537 3905 7537 3895 7531 3896 7539
3894 7567 3897 7585 3905 7602
TIME...MOT...LOC 0016Z 295DEG 30KT 3903 7561 3906 7518 3917 7506
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 6:27 PM EDT | Special Weather Statement | PHI | New Castle | 33 min |
| Jun 21, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 48 min |
| Jun 21, 2:51 PM EDT | Special Weather Statement | PHI | Talbot | 39 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2017Severe Thunderstorm Warnings in Delaware, 2017Every severe thunderstorm warning in 2017
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.