Alert archive / Maryland / Areal Flood Advisories in 2017
Areal Flood Advisory 190, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Aug 7, 2017, 8:54 AM EDT for Cecil County, Kent County, Queen Anne's County, Maryland. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 7, 2017, 8:54 AM EDT (12:54 UTC)
- Expired
- Aug 7, 2017, 12:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Cecil County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 72 km from the middle of the area, began a volume at 12:57 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 0.9 hours before the alert went out and 123 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
- 220 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 780 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 128 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 Aug 7, 6:15 AM EDT, 2 hours 39 minutes earlier.
Area forecast discussion, Aug 7, 6:15 AM EDT, 2 hours 39 minutes before
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</html>Hazardous weather outlook, Aug 7, 5:37 AM EDT, 3 hours 17 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 537 AM EDT Mon Aug 7 2017 NJZ001-007>010-PAZ054-055-060>062-101-103-105-080945- Sussex-Warren-Morris-Hunterdon-Somerset-Carbon-Monroe-Berks-Lehigh- Northampton-Western Chester-Western Montgomery-Upper Bucks- 537 AM EDT Mon Aug 7 2017 This Hazardous Weather Outlook is for northern New Jersey, northwest New Jersey, east central Pennsylvania, northeast Pennsylvania and southeast Pennsylvania. .DAY ONE...Today and Tonight. Locally heavy rain could result in some flooding of poor drainage and urban areas. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NJZ012-013-015-018>020-027-PAZ070-071-102-104-106-080945- Middlesex-Western Monmouth-Mercer-Camden-Northwestern Burlington- Ocean-Southeastern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery-Lower Bucks- 537 AM EDT Mon Aug 7 2017 ...FLASH FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH THIS EVENING... This Hazardous Weather Outlook is for central New Jersey, northern New Jersey, southern New Jersey and southeast Pennsylvania. .DAY ONE...Today 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening. DEZ001>003-MDZ008-012-015-019-020-NJZ016-017-021>023-080945- New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot- Caroline-Salem-Gloucester-Cumberland-Atlantic-Cape May- 537 AM EDT Mon Aug 7 2017 ...FLASH FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH THIS EVENING... This Hazardous Weather Outlook is for central Delaware, northern Delaware, southern Delaware, northeast Maryland and southern New Jersey. .DAY ONE...Today 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. Some thunderstorms this afternoon and evening could produce locally damaging wind gusts. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening. NJZ014-026-080945- Eastern Monmouth-Coastal Ocean- 537 AM EDT Mon Aug 7 2017 ...FLASH FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH THIS EVENING... This Hazardous Weather Outlook is for central New Jersey and southern New Jersey. .DAY ONE...Today 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 for the formation of dangerous rip currents, especially during this afternoon and evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening. DEZ004-NJZ024-025-080945- Delaware Beaches-Atlantic Coastal Cape May-Coastal Atlantic- 537 AM EDT Mon Aug 7 2017 ...FLASH FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH THIS EVENING... This Hazardous Weather Outlook is for southern Delaware and southern New Jersey. .DAY ONE...Today 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. Some thunderstorms this afternoon and evening could produce locally damaging wind gusts. There is a moderate risk for the formation of dangerous rip currents, especially during this afternoon and evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening. ANZ430-431-450>455-080945- 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- 537 AM EDT Mon Aug 7 2017 This Hazardous Weather Outlook is for Atlantic coastal waters and Delaware Bay Waters. .DAY ONE...Today and Tonight. Some thunderstorms could produce local wind gusts in excess of 35 knots this afternoon and tonight, especially south of Little Egg Inlet New Jersey. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 9:59 AM EDT | Areal Flood Advisory | PHI | Cumberland, Salem | 3 hr |
| Aug 7, 12:36 PM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May, Cumberland, Salem | 4 hr |
| Aug 7, 1:23 PM EDT | Flash Flood Warning | PHI | Cumberland | 4 hr |
| Aug 7, 2:04 PM EDT | Special Marine Warning | PHI | 56 min | |
| Aug 7, 2:53 PM EDT | Special Marine Warning | PHI | 67 min | |
| Aug 7, 3:25 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean | 4 hr |
| Aug 7, 3:57 PM EDT | Special Marine Warning | PHI | 63 min | |
| Aug 7, 4:24 PM EDT | Areal Flood Warning | PHI | Atlantic, Burlington, Cape May, Cumberland, Gloucester, Ocean | 4 hr |
| Aug 7, 4:59 PM EDT | Special Marine Warning | PHI | 91 min | |
| Aug 7, 10:44 AM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 4 hr |
| Aug 7, 11:41 AM EDT | Areal Flood Advisory | PHI | Caroline, Talbot | 3 hr |
| Aug 7, 1:35 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 4 hr |
| Aug 7, 2:40 PM EDT | Areal Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 6 hr |
| Aug 7, 4:32 PM EDT | Special Weather Statement | PHI | Talbot | 58 min |
| Aug 7, 5:25 PM EDT | Areal Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 4 hr |
Nearby
Areal Flood Advisories in Maryland, 2017Every areal flood advisory 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.