Alert archive / Delaware / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 148, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 2, 2017, 7:58 PM EDT for Kent County, Delaware; Caroline County, Maryland. It was in force for 47 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
- Aug 2, 2017, 7:58 PM EDT (23:58 UTC)
- Expired
- Aug 2, 2017, 8:45 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Kent County, DE, Caroline County, MD
The radar
The Dover AFB radar (KDOX), 24 km from the middle of the area, began a volume at 00:03 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, 12.0 hours before the alert went out and 119 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
- 161 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 1466 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
497
WUUS51 KPHI 022358
SVRPHI
DEC001-MDC011-030045-
/O.NEW.KPHI.SV.W.0148.170802T2358Z-170803T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
758 PM EDT WED AUG 2 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southern Kent County in central Delaware...
Northeastern Caroline County in eastern Maryland...
* Until 845 PM EDT
* At 757 PM EDT, a severe thunderstorm was located over Sandtown, or
13 miles southwest of Dover, moving east at 25 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Milford, Harrington, Camden, Greensboro, Bowers, Goldsboro,
Woodside, Viola, Rising Sun-Lebanon, Rising Sun, Hazlettville,
Sandtown, Andrewsville, Wyoming, Felton, Frederica, Houston,
Magnolia, Henderson and Marydel.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3900 7587 3916 7572 3907 7537 3903 7536
3884 7555 3883 7562
TIME...MOT...LOC 2357Z 282DEG 21KT 3905 7573
HAIL...0.88IN
WIND...60MPH
$$
po1 follow-up statement
549
WWUS51 KPHI 030025
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
825 PM EDT WED AUG 2 2017
MDC011-030035-
/O.CAN.KPHI.SV.W.0148.000000T0000Z-170803T0045Z/
Caroline MD-
825 PM EDT WED AUG 2 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CAROLINE COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area.
LAT...LON 3896 7569 3912 7564 3907 7537 3903 7536
3886 7553 3885 7555 3885 7560
TIME...MOT...LOC 0025Z 270DEG 19KT 3903 7553
$$
DEC001-030045-
/O.CON.KPHI.SV.W.0148.000000T0000Z-170803T0045Z/
Kent DE-
825 PM EDT WED AUG 2 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR SOUTHERN KENT COUNTY...
At 825 PM EDT, a severe thunderstorm was located over Viola, or 9
miles south of Dover, moving east at 20 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Milford, Harrington, Camden, Bowers, Woodside, Viola, Rising
Sun-Lebanon, Felton, Frederica, Houston, Magnolia, Farmington,
Riverview and Woodside East.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3896 7569 3912 7564 3907 7537 3903 7536
3886 7553 3885 7555 3885 7560
TIME...MOT...LOC 0025Z 270DEG 19KT 3903 7553
HAIL...0.88IN
WIND...60MPH
$$
poThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 12:28 PM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Aug 2, 1:44 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| Aug 2, 3:16 PM EDT | Areal Flood Advisory | PHI | Kent | 7 hr |
| Aug 2, 6:27 PM EDT | Special Weather Statement | PHI | Kent | 33 min |
| Aug 2, 6:00 PM EDT | Special Weather Statement | PHI | Kent | 30 min |
| Aug 2, 6:21 PM EDT | Special Weather Statement | PHI | Queen Anne's | 39 min |
| Aug 2, 6:28 PM EDT | Areal Flood Advisory | PHI | Kent, Queen Anne's | 4 hr |
| Aug 2, 6:55 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 35 min |
| Aug 2, 7:30 PM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's | 45 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2017Severe Thunderstorm Warnings in Maryland, 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.