Alert archive / Pennsylvania / Areal Flood Advisories in 2017
Areal Flood Advisory 153, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Aug 1, 2017, 3:31 PM EDT for Northampton County, Pennsylvania. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Aug 1, 2017, 3:31 PM EDT (19:31 UTC)
- Expired
- Aug 1, 2017, 7:30 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Northampton County, PA
The radar
The Philadelphia radar (KDIX), 118 km from the middle of the area, began a volume at 19:33 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
Brookhaven, NY (KOKX), launched 12:00Z, 7.5 hours before the alert went out and 206 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
- 87 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 1318 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 15 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 1, 3:18 PM EDT, 13 minutes earlier.
Area forecast discussion, Aug 1, 3:18 PM EDT, 13 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Hazardous weather outlook, Aug 1, 3:12 PM EDT, 19 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 312 PM EDT Tue Aug 1 2017 NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-021915- Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Mercer-Carbon- Monroe-Berks-Lehigh-Northampton-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 312 PM EDT Tue Aug 1 2017 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. Localized flooding is possible this afternoon into this evening, due to thunderstorms, especially north of the I-78 corridor. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Localized flooding is possible Wednesday afternoon and evening, due to thunderstorms, especially north of the I-78 corridor. Otherwise, the probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. DEZ001>003-MDZ008-012-015-019-020-NJZ013-016>023-027-PAZ070-071- 021915- New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Talbot- Caroline-Western Monmouth-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Southeastern Burlington-Delaware-Philadelphia- 312 PM EDT Tue Aug 1 2017 This Hazardous Weather Outlook is for central Delaware, northern Delaware, southern Delaware, northeast Maryland, central New Jersey, southern New Jersey and southeast Pennsylvania. .DAY ONE...This Afternoon and Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. DEZ004-NJZ014-024>026-021915- Delaware Beaches-Eastern Monmouth-Atlantic Coastal Cape May- Coastal Atlantic-Coastal Ocean- 312 PM EDT Tue Aug 1 2017 This Hazardous Weather Outlook is for southern Delaware, central New Jersey and southern New Jersey. .DAY ONE...This Afternoon and Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ430-431-450>455-021915- 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- 312 PM EDT Tue Aug 1 2017 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...Wednesday through Monday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Aug 1, 3:15 PM EDT, 16 minutes before
Special Weather Statement National Weather Service Mount Holly NJ 315 PM EDT TUE AUG 1 2017 PAZ055-062-012000- Monroe-Northampton- 315 PM EDT TUE AUG 1 2017 ...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL MONROE AND CENTRAL NORTHAMPTON COUNTIES... At 315 PM EDT, a strong thunderstorm was located over Wind Gap, or 12 miles northwest of Easton, moving southeast at 5 mph. Winds up to 40 mph are possible with this storm. Locations impacted include... Nazareth, Pen Argyl, Wind Gap, Belfast, Tatamy, Stockertown and Eastlawn Gardens. Torrential rainfall is also occurring with this storm, and may cause localized flooding. Do not drive your vehicle through flooded roadways. Persons in campgrounds should consider seeking sturdy shelter until this storm passes. LAT...LON 4082 7541 4089 7532 4083 7514 4072 7529 TIME...MOT...LOC 1915Z 320DEG 5KT 4085 7533 MPS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 2:20 PM EDT | Areal Flood Advisory | PHI | Sussex | 4 hr |
| Aug 1, 5:56 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden | 2 hr |
| Aug 1, 6:17 PM EDT | Flash Flood Warning | PHI | Burlington, Camden | 4 hr |
| Aug 1, 7:37 PM EDT | Areal Flood Advisory | PHI | Mercer | 4 hr |
| Aug 1, 3:15 PM EDT | Special Weather Statement | PHI | Northampton | 45 min |
| Aug 1, 5:41 PM EDT | Areal Flood Advisory | PHI | Carbon, Lehigh | 4 hr |
| Aug 1, 5:58 PM EDT | Areal Flood Advisory | PHI | Bucks, Lehigh, Northampton | 4 hr |
| Aug 1, 6:08 PM EDT | Special Weather Statement | PHI | Philadelphia | 52 min |
| Aug 1, 6:09 PM EDT | Special Weather Statement | PHI | Carbon | 51 min |
| Aug 1, 6:20 PM EDT | Special Weather Statement | PHI | Berks | 40 min |
| Aug 1, 6:21 PM EDT | Areal Flood Advisory | PHI | Berks | 4 hr |
| Aug 1, 6:26 PM EDT | Areal Flood Advisory | PHI | Carbon | 4 hr |
| Aug 1, 6:44 PM EDT | Flash Flood Warning | PHI | Carbon | 4 hr |
| Aug 1, 6:52 PM EDT | Special Weather Statement | PHI | Berks | 38 min |
| Aug 1, 7:17 PM EDT | Areal Flood Advisory | PHI | Berks | 4 hr |
Nearby
Areal Flood Advisories in Pennsylvania, 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.