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PNW March 2023 Weather Discussion (2012 Redux)


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I'm noticing this storm is being an overachiever with lightning. Been producing lightning for over a half hour. I'm seeing some showers forming just NE of Sheridan. I also see showers forming SW of the current thunderstorm producing lightning. This could be training forming in this location. If that happens, local flooding could happen. That's if it verifies with training. 

KRTX - Super-Res Reflectivity 1, 3_11 PM.gif

Screenshot_20230322_151502_My Lightning Tracker Pro.jpg

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4 minutes ago, Ken in Wood Village said:

I'm noticing this storm is being an overachiever with lightning. Been producing lightning for over a half hour. I'm seeing some showers forming just NE of Sheridan. I also see showers forming SW of the current thunderstorm producing lightning. This could be training forming in this location. If that happens, local flooding could happen. That's if it verifies with training. 

KRTX - Super-Res Reflectivity 1, 3_11 PM.gif

Screenshot_20230322_151502_My Lightning Tracker Pro.jpg

These must be some really high thunderstorms because the Langley radar is picking them up. 

KLGX - Super-Res Reflectivity 1, 3_19 PM.gif

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65F out there. Filtered sunshine with some convection to the NW.

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Springfield, Oregon regular season 2023-24 Stats:

  • Coldest high: 25F (Jan 14, 2024)
  • Coldest low: 20F (Jan 14, 2024)
  • Days with below freezing temps: 24 (Most recent: Mar 8, 2024)
  • Days with sub-40F highs: 4 (Most recent: Jan 16, 2024)
  • Total snowfall: 0.0"
  • Total ice: 2.25”
  • Last accumulating snowfall on roads: Dec 27, 2021 (1.9")
  • Last sub-freezing high: Jan 15, 2024 (27F)
  • Last White Christmas: 1990
  • Significant wind events (gusts 45+): 0

Personal Stats:

  • Last accumulating snowfall on roads: Dec 27, 2021
  • Last sub-freezing high: Jan 16, 2024 (32F)
  • Last White Christmas: 2008
  • Total snowfall since joining TheWeatherForums: 42.0"
  • Sub-freezing highs since joining TheWeatherForums: 4

 

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13 minutes ago, TacomaWx said:

You can see the convection building up. Interesting how this is the second time we’ve had some thunderstorm threats this month. Very unusual for March from what I can remember in my lifetime but the sun angles are doing their thing. 

G18_sector_pnw_GEOCOLOR_24fr_20230322-1829.gif

ECMWF has been showing a band of rain forming this evening and moving across SW WA and up through the Seattle area.   Wasn't sure if that was marine layer moving in or something else... appears it is convective.  

**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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image.png

NAM goes crazy this evening in Seattle. Some moistening of the boundary layer due to dying storms drifting in off the Hood Canal, leads to decent midlevel CAPE. I've seen this before on the NAM, it's pretty aggressive, almost too aggressive, in this situation.

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Weather stats for MBY

Snowfall:

-Total snowfall since joining: 50.25"

-2018-19: 21"

-2019-20: 2.5"

-2020-21: 13"

-2021-22: 8.75"

-2022-23: 5.75"

-2023-24*: 0.25"

-Most recent snowfall: 0.25”; January 17th, 2024

-Largest snowfall (single storm): 8.5"; February 12-13, 2021

-Largest snow depth: 14"; 1:30am February 12th, 2019

Temperatures:

-Warmest: 109F; June 28th, 2021

-Coldest: 13F; December 27th, 2021

-Phreeze Count 2023-24: 31

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Just now, TT-SEA said:

ECMWF has been showing a band of rain forming this evening and moving across SW WA and up through the Seattle area.   Wasn't sure if that was marine layer moving in or something else... appears it is convective.  

hive mind

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Weather stats for MBY

Snowfall:

-Total snowfall since joining: 50.25"

-2018-19: 21"

-2019-20: 2.5"

-2020-21: 13"

-2021-22: 8.75"

-2022-23: 5.75"

-2023-24*: 0.25"

-Most recent snowfall: 0.25”; January 17th, 2024

-Largest snowfall (single storm): 8.5"; February 12-13, 2021

-Largest snow depth: 14"; 1:30am February 12th, 2019

Temperatures:

-Warmest: 109F; June 28th, 2021

-Coldest: 13F; December 27th, 2021

-Phreeze Count 2023-24: 31

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SEA was at 60 last hour.   63 in North Bend.   That is 4 out of the last 6 days at or above 60 in both places.   A nice little treat.

**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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5 minutes ago, TT-SEA said:

ECMWF has been showing a band of rain forming this evening and moving across SW WA and up through the Seattle area.   Wasn't sure if that was marine layer moving in or something else... appears it is convective.  

I’m skeptical that it ends up being more than straitform rainfall by the time it gets here…but we will see. 

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Up to 63.3 for the day it’s very nice outside! I wish we were able to get 60 degree sunny days in the summer nowadays. Those are always very pleasant.

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2023 - 2024 Cold Season Stats

Total Snowfall - 0.75”

Max Snow Depth - 0.5”

Coldest High Temp - 21 (Jan 13)

Coldest Low Temp - 9 (Jan 13)

Number of Freezes - 48

Sub-40 highs - 12

Highs 32 or lower - 3

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1/2" hail report out of Corvallis.

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Weather stats for MBY

Snowfall:

-Total snowfall since joining: 50.25"

-2018-19: 21"

-2019-20: 2.5"

-2020-21: 13"

-2021-22: 8.75"

-2022-23: 5.75"

-2023-24*: 0.25"

-Most recent snowfall: 0.25”; January 17th, 2024

-Largest snowfall (single storm): 8.5"; February 12-13, 2021

-Largest snow depth: 14"; 1:30am February 12th, 2019

Temperatures:

-Warmest: 109F; June 28th, 2021

-Coldest: 13F; December 27th, 2021

-Phreeze Count 2023-24: 31

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14 minutes ago, Cold Snap said:

Up to 63.3 for the day it’s very nice outside! I wish we were able to get 60 degree sunny days in the summer nowadays. Those are always very pleasant.

I was thinking that today felt like summer.   But the exact same day in July would probably feel cold.   Full sunshine and mid 60s with very little wind is extremely pleasant.  

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**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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FWIW... the ECMWF showed this band sort of exploding again over King County around 10 p.m. and moving up the Sound all the way to Bellingham after that.

ecmwf-deterministic-washington-precip_1hr_inch-1679486400-1679500800-1679562000-20.gif

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**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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I am not sure this is being driven by the heat of the day... the fact that the ECMWF shows it going all night probably means it being driven by the upper levels.    Although the sun and warmth today is probably helping things along.  

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**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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