Alert archive / Delaware / Areal Flood Advisories in 2018
Areal Flood Advisory 90, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Jun 10, 2018, 6:45 PM EDT for Kent County, Delaware. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 10, 2018, 6:45 PM EDT (22:45 UTC)
- Expired
- Jun 10, 2018, 9:56 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Kent County, DE
The radar
The Dover AFB radar (KDOX), 31 km from the middle of the area, began a volume at 22:47 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, 10.8 hours before the alert went out and 130 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
- 61 J/kg
- Mixed-layer CIN
- -100 J/kg
- Mixed-layer LCL
- 675 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this areal flood advisory went out at Jun 10, 6:38 PM EDT, 7 minutes earlier.
Area forecast discussion, Jun 10, 6:38 PM EDT, 7 minutes before
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</html>Hazardous weather outlook, Jun 10, 4:02 PM EDT, 2 hours 43 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 402 PM EDT Sun Jun 10 2018 DEZ001>003-MDZ008-012-015-019-020-NJZ016>023-027-PAZ070-071-101>104- 112015- New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot- Caroline-Salem-Gloucester-Camden-Northwestern Burlington-Ocean- Cumberland-Atlantic-Cape May-Southeastern Burlington-Delaware- Philadelphia-Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery- 402 PM EDT Sun Jun 10 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH MONDAY MORNING... This Hazardous Weather Outlook is for central Delaware, northern Delaware, southern Delaware, northeast Maryland, southern New Jersey and southeast Pennsylvania. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ001-007>010-012-013-015-PAZ054-055-060>062-105-106-112015- Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Mercer-Carbon-Monroe-Berks-Lehigh-Northampton-Upper Bucks- Lower Bucks- 402 PM EDT Sun Jun 10 2018 This Hazardous Weather Outlook is for central New Jersey, northern New Jersey, northwest New Jersey, east central Pennsylvania, northeast Pennsylvania and southeast Pennsylvania. .DAY ONE...This Afternoon and Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Monday through Saturday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ014-112015- Eastern Monmouth- 402 PM EDT Sun Jun 10 2018 This Hazardous Weather Outlook is for central New Jersey. .DAY ONE...This Afternoon and Tonight. There is a moderate risk of rip currents. .DAYS TWO THROUGH SEVEN...Monday through Saturday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ004-NJZ024>026-112015- Delaware Beaches-Atlantic Coastal Cape May-Coastal Atlantic- Coastal Ocean- 402 PM EDT Sun Jun 10 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH MONDAY MORNING... This Hazardous Weather Outlook is for southern Delaware and southern New Jersey. .DAY ONE...This Afternoon and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. There is a moderate risk of rip currents. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ430-431-450>455-112015- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 402 PM EDT Sun Jun 10 2018 This Hazardous Weather Outlook is for Atlantic coastal waters and Delaware Bay Waters. .DAY ONE...This Afternoon and Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Monday through Saturday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
In the hours before
Special weather statement, Jun 10, 3:50 PM EDT, 2 hours 55 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
350 PM EDT SUN JUN 10 2018
DEZ002-003-MDZ019-020-102030-
Inland Sussex-Kent-Talbot-Caroline-
350 PM EDT SUN JUN 10 2018
...A THUNDERSTORM WITH TORRENTIAL DOWNPOURS WILL AFFECT NORTHWEST
SUSSEX AND SOUTHWESTERN KENT COUNTIES IN DELAWARE...AND NORTHEASTERN
TALBOT AND CAROLINE COUNTIES IN MARYLAND...
At 347 PM EDT, a thunderstorm was located over Harmony, or 8 miles
east of Easton, moving northeast at 10 mph. Torrential downpours
with rainfall rates of one inch in 30 minutes will occur with this
storm, and may cause localized flooding. Do not drive your vehicle
through flooded roadways.
Locations impacted include...
Easton, Denton, Harrington, Bridgeville, Preston, Tanyard, Harmony,
Smithville, Agner, Matthews, Choptank, Griffin, Windyhill, Cordova,
Andrewsville, Greenwood and Farmington.
Cloud to ground lightning is also occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 3882 7606 3890 7598 3898 7567 3891 7555
3874 7553 3869 7580 3871 7584 3870 7590
3869 7590 3868 7593 3867 7595 3866 7599
TIME...MOT...LOC 1947Z 246DEG 14KT 3878 7592
JRKSpecial weather statement, Jun 10, 4:45 PM EDT, 2 hours before
Special Weather Statement
National Weather Service Mount Holly NJ
445 PM EDT SUN JUN 10 2018
DEZ003-MDZ020-102115-
Inland Sussex-Caroline-
445 PM EDT SUN JUN 10 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN SUSSEX AND
SOUTHEASTERN CAROLINE COUNTIES...
At 441 PM EDT, a strong thunderstorm was located over Federalsburg,
or 7 miles east of Hurlock, moving southeast at 15 mph.
Torrential downpours with this thunderstorm has produced rainfall of
1.5 to 2 inches in just 30 minutes, which will cause localized
flooding. Do not drive your vehicle through flooded roadways.
A Flash Flood Warning may need to be issued shortly if this storm
continues to produce excessive rainfall rates over the same
locations in southern Delaware that received heavy rain just 24
hours ago.
This storm will be near...
Seaford around 505 PM EDT.
Laurel and Sycamore around 515 PM EDT.
Other locations impacted by this storm include Blades and Bethel.
Winds up to 35 mph are also possible with this storm.
Cloud to ground lightning is also occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 3854 7570 3865 7571 3869 7577 3868 7580
3870 7580 3870 7584 3872 7584 3878 7576
3868 7535 3845 7546 3845 7547
TIME...MOT...LOC 2041Z 302DEG 14KT 3867 7574
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 3:48 AM EDT | Flash Flood Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 28 hr |
| Jun 10, 4:01 AM EDT | Small Craft Advisory | PHI | 50 hr | |
| Jun 10, 7:38 PM EDT | Special Weather Statement | PHI | Ocean | 52 min |
| Jun 10, 4:45 PM EDT | Special Weather Statement | PHI | Sussex | 30 min |
| Jun 10, 5:00 PM EDT | Flash Flood Warning | PHI | Sussex | 108 min |
Nearby
Areal Flood Advisories in Delaware, 2018Every areal flood advisory in 2018
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.