Alert archive / Delaware / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 277, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 22, 2019, 11:58 PM EDT for Kent County, Sussex County, Delaware; Caroline County, Maryland. It was in force for 47 min. 6 reports 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 22, 2019, 11:58 PM EDT (03:58 UTC)
- Expired
- Jul 23, 2019, 12:45 AM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Sussex County, DE, Caroline County, MD
The radar
The Dover AFB radar (KDOX), 19 km from the middle of the area, began a volume at 04:00 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 23, 12:24 AM EDT | TSTM WND DMG | 1 Ese Selbyville, DE | DOWNED WIRES NEAR THE INTERSECTION OF BETHANY ROAD AND SOUTH MAIN STREET. TIME ESTIMATED FROM RADAR. |
| Jul 23, 12:29 AM EDT | TSTM WND DMG | 1 Sw Dagsboro, DE | SEVERAL SIX-INCH DIAMETER LIMBS DOWN NEAR THE INTERSECTION OF U.S. HIGHWAY 113 AND 9 FOOT ROAD. TIME ESTIMATED FROM RADAR. |
| Jul 23, 12:29 AM EDT | TSTM WND DMG | 3 Ssw Millville, DE | LARGE TREE DOWN ON PEPPERS CORNER ROAD. TIME ESTIMATED FROM RADAR. |
| Jul 23, 12:32 AM EDT | TSTM WND DMG | 2 S Millville, DE | TREE DOWN INTO A WIRE ON CENTRAL AVENUE IN FRANKFORD. TIME ESTIMATED FROM RADAR. |
| Jul 23, 12:40 AM EDT | MARINE TSTM WIND 39 | 1 Nnw Bethany Beach, DE | |
| Jul 23, 12:54 AM EDT | MARINE TSTM WIND 40 | 2 Wnw Lewes, DE | WEATHERFLOW GAUGE. |
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, 4.0 hours before the alert went out and 83 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
- 1618 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 1734 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted.
036
WUUS51 KPHI 230358
SVRPHI
DEC001-005-MDC011-230445-
/O.NEW.KPHI.SV.W.0277.190723T0358Z-190723T0445Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1158 PM EDT Mon Jul 22 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Sussex County in southern Delaware...
Southern Kent County in central Delaware...
Southeastern Caroline County in eastern Maryland...
* Until 1245 AM EDT.
* At 1157 PM EDT, a severe thunderstorm was located over Salisbury,
moving northeast 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...
Georgetown, Milford, Seaford, Denton, Millsboro, Laurel,
Harrington, Lewes, Federalsburg, Milton, Selbyville, Bridgeville,
Delmar, Dagsboro, Millville, Ellendale, Smithville, Gumboro, Agner
and Andrewsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3846 7569 3864 7571 3870 7583 3890 7583
3891 7571 3900 7567 3896 7536 3880 7518
3878 7510 3869 7509 3869 7514 3864 7513
3862 7509 3859 7521 3857 7518 3861 7510
3858 7510 3858 7507 3860 7506 3845 7505
TIME...MOT...LOC 0357Z 227DEG 46KT 3841 7560
HAIL...<.75IN
WIND...60MPH
$$
NC1 follow-up statement
898
WWUS51 KPHI 230429
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1229 AM EDT Tue Jul 23 2019
MDC011-230439-
/O.CAN.KPHI.SV.W.0277.000000T0000Z-190723T0445Z/
Caroline MD-
1229 AM EDT Tue Jul 23 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CAROLINE COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3846 7569 3891 7573 3891 7571 3900 7567
3896 7536 3880 7518 3878 7510 3869 7509
3869 7514 3864 7513 3862 7509 3859 7521
3857 7518 3859 7513 3858 7507 3860 7506
3845 7505
TIME...MOT...LOC 0429Z 227DEG 46KT 3869 7521
$$
DEC001-005-230445-
/O.CON.KPHI.SV.W.0277.000000T0000Z-190723T0445Z/
Sussex DE-Kent DE-
1229 AM EDT Tue Jul 23 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT
FOR SUSSEX AND SOUTHERN KENT COUNTIES...
At 1229 AM EDT, a severe thunderstorm was located 7 miles southwest
of Lewes, or 9 miles east of Georgetown, moving northeast at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Georgetown, Milford, Seaford, Millsboro, Laurel, Harrington, Lewes,
Milton, Selbyville, Bridgeville, Delmar, Dagsboro, Millville,
Ellendale, Gumboro, Andrewsville, Sycamore, Long Neck, Ocean View and
Blades.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3846 7569 3891 7573 3891 7571 3900 7567
3896 7536 3880 7518 3878 7510 3869 7509
3869 7514 3864 7513 3862 7509 3859 7521
3857 7518 3859 7513 3858 7507 3860 7506
3845 7505
TIME...MOT...LOC 0429Z 227DEG 46KT 3869 7521
HAIL...<.75IN
WIND...60MPH
$$
NCThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 12:44 AM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 31 min |
| Jul 23, 7:48 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
Nearby
Severe Thunderstorm Warnings in Delaware, 2019Severe Thunderstorm Warnings in Maryland, 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.