Alert archive / Maryland / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 217, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 6, 2019, 9:17 PM EDT for Kent County, New Castle County, Sussex County, Delaware; 4 counties in Maryland. It was in force for 43 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 6, 2019, 9:17 PM EDT (01:17 UTC)
- Expired
- Jul 6, 2019, 10:00 PM EDT
- In force
- 43 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 33 km from the middle of the area, began a volume at 01:20 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 6, 9:49 PM EDT | MARINE TSTM WIND 46 | 3 S Kitts Hummock, DE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 1.3 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
- 1541 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1007 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
584
WUUS51 KPHI 070117
SVRPHI
DEC001-003-005-MDC011-029-035-041-070200-
/O.NEW.KPHI.SV.W.0217.190707T0117Z-190707T0200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
917 PM EDT Sat Jul 6 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Sussex County in southern Delaware...
Southwestern New Castle County in northern Delaware...
Kent County in central Delaware...
Northeastern Talbot County in eastern Maryland...
Queen Anne's County in northeastern Maryland...
Caroline County in eastern Maryland...
Central Kent County in northeastern Maryland...
* Until 1000 PM EDT.
* At 917 PM EDT, a severe thunderstorm was located over Church Hill,
or 10 miles northeast of Centerville, moving southeast at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Dover, Centerville, Milford, Denton, Centreville, Harrington,
Camden, Federalsburg, Greensboro, Oakland, Ridgely, Cheswold,
Church Hill, Preston, Millington, Sudlersville, Bowers, Goldsboro,
Queen Anne and Woodside.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3936 7576 3901 7533 3894 7531 3894 7532
3892 7531 3867 7580 3870 7580 3871 7584
3868 7592 3899 7618 3900 7617 3902 7620
3905 7623
TIME...MOT...LOC 0117Z 310DEG 38KT 3916 7595
HAIL...<.75IN
WIND...60MPH
$$
MPS2 follow-up statements
151
WWUS51 KPHI 070141
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
941 PM EDT Sat Jul 6 2019
DEC003-MDC029-070151-
/O.CAN.KPHI.SV.W.0217.000000T0000Z-190707T0200Z/
New Castle DE-Kent MD-
941 PM EDT Sat Jul 6 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW CASTLE AND
CENTRAL KENT COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3894 7604 3928 7566 3901 7533 3896 7531
3868 7580 3870 7580 3871 7584 3871 7585
TIME...MOT...LOC 0141Z 305DEG 32KT 3906 7574
$$
DEC001-005-MDC011-035-041-070200-
/O.CON.KPHI.SV.W.0217.000000T0000Z-190707T0200Z/
Sussex DE-Kent DE-Talbot MD-Queen Anne's MD-Caroline MD-
941 PM EDT Sat Jul 6 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR NORTHWESTERN SUSSEX...KENT...NORTHEASTERN TALBOT...SOUTHEASTERN
QUEEN ANNE'S AND CAROLINE COUNTIES...
At 941 PM EDT, a severe thunderstorm was located over Sandtown, or 13
miles southwest of Dover, moving southeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Dover, Milford, Denton, Harrington, Camden, Greensboro, Oakland,
Ridgely, Cheswold, Bowers, Goldsboro, Queen Anne, Woodside, Viola,
Hartly, Smithville, Rising Sun-Lebanon, Jumptown, Hazlettville and
Agner.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3894 7604 3928 7566 3901 7533 3896 7531
3868 7580 3870 7580 3871 7584 3871 7585
TIME...MOT...LOC 0141Z 305DEG 32KT 3906 7574
HAIL...<.75IN
WIND...60MPH
$$
MPS883
WWUS51 KPHI 070200
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1000 PM EDT Sat Jul 6 2019
DEC001-005-MDC011-035-041-070210-
/O.EXP.KPHI.SV.W.0217.000000T0000Z-190707T0200Z/
Sussex DE-Kent DE-Talbot MD-Queen Anne's MD-Caroline MD-
1000 PM EDT Sat Jul 6 2019
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN SUSSEX...KENT...
NORTHEASTERN TALBOT...SOUTHEASTERN QUEEN ANNE'S AND CAROLINE COUNTIES
HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3894 7604 3928 7566 3901 7533 3896 7531
3868 7580 3870 7580 3871 7584 3871 7585
TIME...MOT...LOC 0200Z 310DEG 38KT 3895 7558
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 8:23 PM EDT | Special Weather Statement | PHI | New Castle | 52 min |
| Jul 6, 9:01 PM EDT | Special Weather Statement | PHI | Queen Anne's | 29 min |
| Jul 7, 6:37 PM EDT | Areal Flood Advisory | PHI | Queen Anne's, Talbot | 113 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2019Severe Thunderstorm Warnings in Delaware, 2019Every severe thunderstorm warning in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.