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E PA/NJ/DE Spring 2022 OBS Thread


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41 minutes ago, Hurricane Agnes said:

Just had some convection (lightning and thunder).  It has been lightly raining for a bit but am now getting heavier rain.

 

Currently 45 with dp 45.

radar20-04072022.png

lightning-949am-04072022.PNG

Thought I heard some boomers a little while ago, but it's trash day here so I wasn't sure.

45F, looks like .30" for the day so far.

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Flood Watch for the area issued -

 

Quote

Flood Watch

Flood Watch
National Weather Service Mount Holly NJ
1205 PM EDT Thu Apr 7 2022

DEZ001-NJZ001-007>010-012-015>019-PAZ054-055-060>062-070-071-101>106-
080415-
/O.NEW.KPHI.FA.A.0001.220407T1605Z-220408T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle-Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Mercer-
Salem-Gloucester-Camden-Northwestern Burlington-Carbon-Monroe-Berks-
Lehigh-Northampton-Delaware-Philadelphia-Western Chester-Eastern
Chester-Western Montgomery-Eastern Montgomery-Upper Bucks-Lower
Bucks-
Including the cities of Glassboro, Jim Thorpe, Flemington, Media,
Philadelphia, Doylestown, Chalfont, Morristown, Pennsville, Reading,
Lansdale, Norristown, Honey Brook, Mount Holly, Cherry Hill,
Moorestown, Pottstown, Allentown, Oxford, Kennett Square, Easton,
West Chester, Morrisville, Wilmington, New Brunswick, Trenton,
Newton, Washington, Collegeville, Camden, Bethlehem, Stroudsburg,
Perkasie, and Somerville
1205 PM EDT Thu Apr 7 2022

...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of northern Delaware...New Jersey...and
  Pennsylvania...including the following areas...in northern
  Delaware...New Castle. In New Jersey...Camden, Gloucester,
  Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington,
  Salem, Somerset, Sussex, and Warren. In Pennsylvania...Berks,
  Carbon, Delaware, Eastern Chester, Eastern Montgomery, Lehigh,
  Lower Bucks, Monroe, Northampton, Philadelphia, Upper Bucks,
  Western Chester, and Western Montgomery.

* WHEN...Through late tonight.

* IMPACTS...Excessive runoff may result in flooding of creeks,
  streams, and other low-lying and flood-prone locations. Flooding
  may occur in poor drainage and urban areas. Low-water crossings
  may be flooded.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers with embedded thunderstorms will
    move through the area through this evening bringing a general
    1.5 to 2.5 inches of rainfall. However within any
    thunderstorms amounts could be higher bringing the potential
    for Flash Flooding.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

Fitzsimmons

 

Also including the Flood Advisory issued a bit less than 2 hours ago -

 

Quote

Flood Advisory

Flood Advisory
National Weather Service Mount Holly NJ
1034 AM EDT Thu Apr 7 2022

DEC003-NJC007-015-033-PAC017-045-091-101-071645-
/O.CON.KPHI.FA.Y.0006.000000T0000Z-220407T1645Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-Camden NJ-Gloucester NJ-Salem NJ-Bucks PA-Delaware PA-
Montgomery PA-Philadelphia PA-
1034 AM EDT Thu Apr 7 2022

...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1245 PM EDT THIS
AFTERNOON...

* WHAT...Flooding caused by excessive rainfall continues.

* WHERE...Portions of northern Delaware...southern New Jersey...and
  southeast Pennsylvania...including the following counties...in
  northern Delaware...New Castle. In southern New Jersey...Camden,
  Gloucester, and Salem. In southeast Pennsylvania...Bucks,
  Delaware, Montgomery, and Philadelphia.

* WHEN...Until 1245 PM EDT.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.

* ADDITIONAL DETAILS...
  - At 1033 AM EDT, Doppler radar and automated rain gauges
    indicated heavy rain due to thunderstorms. Minor flooding is
    ongoing or expected to begin shortly in the advisory area.
    Between 0.5 and 1 inch of rain has fallen.
  - Some locations that may experience flooding include...
    Philadelphia, Camden, Wilmington, Newark, Bensalem, Chester,
    Pennsville, Yeadon, Carneys Point, Palmyra, Folcroft, and
    Swarthmore.
  - This includes the following highways...
    Pennsylvania Turnpike between mile markers 344 and 352.
    Interstate 95 in Pennsylvania between mile markers 0 and
    15...and
    between mile markers 20 and 38.
    Interstate 95 in Delaware between mile markers 1 and 23.
    Interstate 76 in Pennsylvania between mile markers 335 and
    350.
    Interstate 295 in New Jersey near mile marker 0.
    Interstate 676 in Pennsylvania between mile markers 0 and 1.
    Interstate 676 in New Jersey near mile marker 4.
    Interstate 476 in Pennsylvania between mile markers 0 and 10.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3974 7576 4019 7506 4009 7489 4001 7505
      3999 7506 4000 7503 3950 7578 3972 7579


$$

SFJ

 

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38 minutes ago, RedSky said:

Yet another ugly monster trough has been showing up in guidance for the 3rd week of April. Yep it's 2020 all over again. Late freezes and who knows maybe flakes. Can't comprehend this persistent azz pattern. 

 

 

easternt.png

Long discussion on that here (small excerpt below) - https://www.severe-weather.eu/global-weather/april-forecast-weather-pattern-polar-vortex-collapse-jet-stream-usa-europe-fa/

 

Quote

*April Forecast* Weather patterns are now adjusting to the Polar Vortex collapse, creating a weak jet stream as we head deeper into Spring

By: Author Andrej Flis

Posted on Published: 07/04/2022

Categories Global weather

April weather across the Northern Hemisphere will be shaped by the Polar Vortex collapse event from last month. Unseasonably cold weather events will continue over North America, with a weakened circulation and a disrupted jet stream pattern.

The Polar Vortex is a very powerful short-to-medium term weather driver during every cold season. For this reason, we monitor the activity high above in the stratosphere.

The Polar Vortex underwent a strong collapse event in late March, with the effects now coming down from the higher levels of the atmosphere. The already weak circulation will receive a new wave of disruption.

polar-vortex-weather-forecast-spring-summer-season-update-april-2022-united-states-north-hemisphere-cold-pressure-pattern-warming

 

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9 minutes ago, Hurricane Agnes said:

They do a good job but need to improve the webpage. Projecting another cold wave in early May after the 3rd week of April chill fits the pattern perfectly. 

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Now in a little pause.  Have 1.91" for the day (3.29" for the 3 days).  Temp down to 49 with dp 49. 

Flood Advisory was expanded and extended -

Quote

Flood Advisory

Flood Advisory
National Weather Service Mount Holly NJ
752 PM EDT Thu Apr 7 2022

NJC005-007-015-019-021-035-PAC017-091-101-080300-
/O.NEW.KPHI.FA.Y.0009.220407T2352Z-220408T0300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-Hunterdon NJ-Mercer NJ-
Somerset NJ-Bucks PA-Montgomery PA-Philadelphia PA-
752 PM EDT Thu Apr 7 2022

...FLOOD ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING...

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Portions of New Jersey...and southeast Pennsylvania...
  including the following counties...in New Jersey...Burlington,
  Camden, Gloucester, Hunterdon, Mercer, and Somerset. In southeast
  Pennsylvania...Bucks, Montgomery, and Philadelphia.

* WHEN...Until 1100 PM EDT.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.

* ADDITIONAL DETAILS...
  - At 750 PM EDT, Doppler radar indicated heavy rain due to
    thunderstorms. Minor flooding is ongoing or expected to begin
    shortly across portions of the advisory area. Up to  1.5
    inches of rain have fallen this evening. This is on top of
    the rain that fell earlier today.
  - Some locations that may experience flooding include...
    Philadelphia, Trenton, Camden, Somerville, Gloucester City,
    Bensalem, Bridgewater, Ewing, Deptford, West Deptford,
    Princeton, and Bellmawr.
  - This includes the following highways...
    Pennsylvania Turnpike between mile markers 341 and 359.
    Interstate 95 in Pennsylvania between mile markers 15 and 40.
    Interstate 78 in New Jersey between mile markers 8 and 34.
    Interstate 76 in Pennsylvania between mile markers 344 and
    345...and
    between mile markers 348 and 351.
    Interstate 76 in New Jersey between mile markers 0 and 3.
    Interstate 295 in New Jersey between mile markers 21 and
    27...and
    between mile markers 59 and 76.
    Interstate 195 in New Jersey between mile markers 0 and 3.
    Interstate 676 in Pennsylvania between mile markers 0 and 1.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 4066 7508 4074 7457 4021 7464 3999 7500
      3966 7524


$$

Kruzdlo

 

Quote

Flood Advisory

Flood Advisory
National Weather Service Mount Holly NJ
701 PM EDT Thu Apr 7 2022

DEC003-NJC015-033-PAC011-017-029-045-077-091-101-080200-
/O.NEW.KPHI.FA.Y.0007.220407T2301Z-220408T0200Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-Gloucester NJ-Salem NJ-Berks PA-Bucks PA-Chester PA-
Delaware PA-Lehigh PA-Montgomery PA-Philadelphia PA-
701 PM EDT Thu Apr 7 2022

...FLOOD ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Portions of northern Delaware...southern New Jersey...and
  Pennsylvania...including the following counties...in northern
  Delaware...New Castle. In southern New Jersey...Gloucester and
  Salem. In Pennsylvania...Berks, Bucks, Chester, Delaware, Lehigh,
  Montgomery, and Philadelphia.

* WHEN...Until 1000 PM EDT.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.

* ADDITIONAL DETAILS...
  - At 701 PM EDT, Doppler radar indicated heavy rain. Minor
    flooding is ongoing or expected to begin shortly in the
    advisory area. Between 1 and 2 inches of rain have fallen.
  - Some locations that may experience flooding include...
    Philadelphia, Allentown, Reading, Wilmington, Newark, West
    Chester, Norristown, Chester, Pottstown, West Deptford,
    Phoenixville, and Lansdale.
  - This includes the following highways...
    New Jersey Turnpike between exits 1 and 2.
    Pennsylvania Turnpike between mile markers 296 and 341.
    Interstate 95 in Pennsylvania between mile markers 0 and 15.
    Interstate 95 in Delaware between mile markers 0 and 23.
    Interstate 78 in Pennsylvania between mile markers 10 and 32.
    Interstate 76 in Pennsylvania between mile markers 327 and
    349.
    Interstate 295 in New Jersey between mile markers 0 and 21.
    Interstate 176 in Pennsylvania between mile markers 1 and 11.
  - http://www.weather.gov/safety/flood

LAT...LON 3972 7610 3987 7599 3995 7599 4004 7594
      4011 7594 4014 7587 4050 7643 4057 7602
      4055 7536 4054 7533 4055 7531 4055 7509
      3966 7522 3962 7579 3972 7579


$$

Kruzdlo

 

 

20220407-nws-floodadv-phi-floodadv-floodwatch-phiarea1.PNG

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