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April 2021 Pacific Northwest Weather Obs


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For everywhere wondering/speculating about where I have been, I am very flattered We have been on a road trip to Grand Teton and Yellowstone this week. Took a nice week off before starting a new

Getting married tomorrow so that’s why I’ve not been around a ton of late. Looks like we are about 68F out there and are ready for some much-needed rainfall overnight.

Well I haven't been around in a while. Been a little, erm, preoccupied. Hope everyone's enjoying the sunshine and warmth lately! I'll be in Arizona for the weekend, and hopeful I don't melt!

Posted Images

I put down 1/2" wet snow on my notes yesterday, making a total of 19.0" from Nov 1 - Apr 25. It's looking like that was winter's final breath in terms of anything measurable.

Now the question is; when will my first t'storm happen! I'm pretty close to the average first occurrence which lands in the first week or so of May.

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Weather Data for Klamath Falls, OR
-------------------------------------------------------------------
Snowfall (with % of seasonal average)

2010-2011 - 60.70" (168%)
2011-2012 - 49.00" (136%)
2012-2013 - 25.10" (70%)
2013-2014 - 9.05" (25%)
2014-2015 - 2.90" (8%)
2015-2016 - 54.45" (151%)
2016-2017 - 63.00" (175%)
2017-2018 - 18.10" (50%)
2018-2019 - 52.30" (145%)
2019-2020 - 37.00" (103%)
2020-2021 - 19.00" (53%)
 
2021 Thunderstorms (1)
05/14, 06/--
 
Biggest Snowstorm - 18.4" (Jan 3-4 2017 - 26 hours)
Top 5 Daily Snows: 12.40" (01/03/2017), 8.20" (11/23/2010), 7.50" (12/13/2015), 6.60" (02/07/2017), 6.20" (03/10/2019)
Honorable Mention: 6.00" (03/20/2012), 6.00" (02/28/2012), 6.00" (01/16/2020), 5.70" (12/14/2016), 5.50" (01/18/2012)
Max Depths: 21.00" (01/07/2017), 18.00" (12/24/2015), 13.00" (01/16/2020), 11.00" (11/23/2010), 9.50" (02/27/2019), 9.00" (02/28/2012)
 
T'storm Days: 10 (2020), 14 (2019), 16 (2018), 12 (2017), 13 (2016), 20 (2015), 21 (2014), 16 (2013), 2 (2012), 12 (2011)
1980-2015 Avg = 12
Severe T'storms: 6 (08/05/2020), (08/10/2019), (08/08/2017), (07/24/2017), (01/19/2016), (08/05/2012) 
"Almost" Severe: 2 (08/10/2017), (05/04/2016)
Vicinity Severe T'storms (close enough to hear, with official severe reports)
(06/26/2017), (08/05/2016), (07/09/2015), (07/05/2015), (06/09/2015), (08/05/2014), (08/04/2014), (08/22/2013), (08/12/2013), (09/12/2011), (09/04/2011)

 

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Got down to 44 this morning. No new rainfall since midnight but ended up with 0.13” yesterday so we’re up to exactly 1” of rain for the month. 

Warm Season Stats

+80s-3

+85s-0

+90s-0

Monthly Rainfall-2.14”

Warm Season Rainfall-5.02”

Warmest high temp-84

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Looks like we might not get any more rain for the rest of the month...some rain in the first few days of may but nothing too crazy euro spits out 0.4” in that timeframe. 

Warm Season Stats

+80s-3

+85s-0

+90s-0

Monthly Rainfall-2.14”

Warm Season Rainfall-5.02”

Warmest high temp-84

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1 minute ago, TacomaWaWx said:

Looks like we might not get any more rain for the rest of the month...some rain in the first few days of may but nothing too crazy euro spits out 0.4” in that timeframe. 

Think I’m nearing 3” on the month, I will have to check when I get home later. 

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Who'da thunk my place month to date is wetter than PDX? 🤪

Ok if this was in the summer that probably happens frequently, but in April?

Weather Data for Klamath Falls, OR
-------------------------------------------------------------------
Snowfall (with % of seasonal average)

2010-2011 - 60.70" (168%)
2011-2012 - 49.00" (136%)
2012-2013 - 25.10" (70%)
2013-2014 - 9.05" (25%)
2014-2015 - 2.90" (8%)
2015-2016 - 54.45" (151%)
2016-2017 - 63.00" (175%)
2017-2018 - 18.10" (50%)
2018-2019 - 52.30" (145%)
2019-2020 - 37.00" (103%)
2020-2021 - 19.00" (53%)
 
2021 Thunderstorms (1)
05/14, 06/--
 
Biggest Snowstorm - 18.4" (Jan 3-4 2017 - 26 hours)
Top 5 Daily Snows: 12.40" (01/03/2017), 8.20" (11/23/2010), 7.50" (12/13/2015), 6.60" (02/07/2017), 6.20" (03/10/2019)
Honorable Mention: 6.00" (03/20/2012), 6.00" (02/28/2012), 6.00" (01/16/2020), 5.70" (12/14/2016), 5.50" (01/18/2012)
Max Depths: 21.00" (01/07/2017), 18.00" (12/24/2015), 13.00" (01/16/2020), 11.00" (11/23/2010), 9.50" (02/27/2019), 9.00" (02/28/2012)
 
T'storm Days: 10 (2020), 14 (2019), 16 (2018), 12 (2017), 13 (2016), 20 (2015), 21 (2014), 16 (2013), 2 (2012), 12 (2011)
1980-2015 Avg = 12
Severe T'storms: 6 (08/05/2020), (08/10/2019), (08/08/2017), (07/24/2017), (01/19/2016), (08/05/2012) 
"Almost" Severe: 2 (08/10/2017), (05/04/2016)
Vicinity Severe T'storms (close enough to hear, with official severe reports)
(06/26/2017), (08/05/2016), (07/09/2015), (07/05/2015), (06/09/2015), (08/05/2014), (08/04/2014), (08/22/2013), (08/12/2013), (09/12/2011), (09/04/2011)

 

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Got down to 44F and now up to 51F and cloudy but it's been dry all night. Just 0.24" for the month.

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Springfield, Oregon cold season 20-21 Stats:

  • Coldest high: 38F (Nov 21)
  • Coldest low: 23F (Oct 26)
  • Days with below freezing temps: 50 (Most recent: Apr 14, 2021)
  • Days with sub-40F highs: 3 (Most recent: Dec 24, 2020)
  • Total snowfall: 0.0"
  • Last accumulating snowfall: February 27, 2019
  • Last sub-freezing high: Jan 14, 2017 (31F)
  • Last White Christmas: 1990
  • Significant wind events (gusts 45+): 0

Personal Stats:

  • Last accumulating snowfall: February 27, 2019
  • Last sub-freezing high: Jan 14, 2017 (31)
  • Last White Christmas: 2008
  • Total snowfall since joining TheWeatherForums: 20.7"

 

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My Twitter @357jerseys4hope

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1 minute ago, MossMan said:

Think I’m nearing 3” on the month, I will have to check when I get home later. 

I wouldn’t be surprised if you ended up with more too the next couple days. Most of the rain looks to be north of Seattle or over the mountains.  Has been a pretty dry month down this way pretty much a lock for driest April ive recorded. 

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Warm Season Stats

+80s-3

+85s-0

+90s-0

Monthly Rainfall-2.14”

Warm Season Rainfall-5.02”

Warmest high temp-84

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24 minutes ago, TigerWoodsLibido said:

Got down to 44F and now up to 51F and cloudy but it's been dry all night. Just 0.24" for the month.

Don't worry. I turned on Phil's Weather Machine, used it's awesome looking steering wheel and grid inputs to put Oregon in the crosshairs of whatever weather events come next and increased the odds of colder and wet to 90 percent.

I was SO tempted to bump it higher but didn't want to make the machine grow 'hot' and throttle down his machine to be nice to him.  90 percent was as high as I dared it to go.  I probably should've done it around 80.

 

 I'm letting the machine do the rest.  I did it when Phil was asleep.

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12Z GFS is weaker and drier with the weekend trough... only shows about .25 for Seattle for the next 9 days.

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

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We picked up 1" of snow last night. We are at .18" of precip for the month which ties us with April 2008 and just ahead of April 1992 for driest ever. Luckily both of those following winters were a lot of fun. Fingers crossed. 

We have also been having an earthquake swarm centered in the middle of the lake away from any known faults which has been unnerving. We had a 3.9 yesterday and a 3.2 this morning with a lot of 2.0 earthquakes in between. They have been shallow earthquakes though at around 1.5 miles deep so widely felt. 

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26 minutes ago, TT-SEA said:

12Z GFS is weaker and drier with the weekend trough... only shows about .25 for Seattle for the next 9 days.

Finally catching onto the cooler/troughier solution for week-2, though. Coming into line with the EPS.

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2 minutes ago, Phil said:

Finally catching onto the cooler/troughier solution for week-2, though. Coming into line with the EPS.

Yeah... looks like there will be a trough/ULL diving into the West next week at some point.

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

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18 minutes ago, Phil said:

Finally catching onto the cooler/troughier solution for week-2, though. Coming into line with the EPS.

I'm really liking the looks of that pattern toward the end of the first week of May.  A block in the sweet spot.

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Death To Warm Anomalies!

 

Winter 2020-21 stats

 

Total Snowfall = 7.0"

Day with 1" or more snow depth = 5

Total Hail = 0.0"

Coldest Low = 23

Lows 32 or below = 55

Highs 32 or below = 2

Lows 20 or below = 0

Highs 40 or below = 5

 

 

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13 minutes ago, MossMan said:

Heavy drizzle currently...The type that completely soaks you after about 5 seconds of being out in it.

Partly sunny here... but the radar is getting more active again.

 

nb 4-26.png

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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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Pretty good amount of sunshine here in the south sound currently...some showers to the E and SE of here but I doubt we get any rain today. 55 currently. 

D3109E43-4E08-4395-97DE-9D44DC0649EF.jpeg

Warm Season Stats

+80s-3

+85s-0

+90s-0

Monthly Rainfall-2.14”

Warm Season Rainfall-5.02”

Warmest high temp-84

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This month should easily beat our other driest April’s on record like 2007 and 2016. Looks like we should get some rain in the first week of may though...we will see what the euro shows here in a bit. 

Warm Season Stats

+80s-3

+85s-0

+90s-0

Monthly Rainfall-2.14”

Warm Season Rainfall-5.02”

Warmest high temp-84

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Looks like the euro bumped up the rain totals a bit for the first week of may for most areas which is nice to see. 

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Warm Season Stats

+80s-3

+85s-0

+90s-0

Monthly Rainfall-2.14”

Warm Season Rainfall-5.02”

Warmest high temp-84

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5 minutes ago, Phil said:

The new GFS might be worse than the legacy Euro when it comes to erroneously dumping troughs out into the NPAC.

Interesting.  

I looked back a week ago and the ECMWF/EPS were showing zonal flow and wet weather this week and then the GFS started dumping that trough out into the NPAC and pumping up a ridge for a couple days.   And that is exactly what is happening. 

 

gfs-deterministic-namer-z500_anom-9654400.png

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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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7 minutes ago, TT-SEA said:

Interesting.  

I looked back a week ago and the ECMWF/EPS were showing zonal flow and wet weather this week and then the GFS started dumping that trough out into the NPAC and pumping up a ridge for a couple days.   And that is exactly what is happening. 

 

gfs-deterministic-namer-z500_anom-9654400.png

That’s not what happened. :lol: The Euro actually caught onto the second ridge nearly two days before the GFS, which was still projecting an Aleutian low/NPAC jet pattern.

The GFS is the only model with a NPAC trough. Even most of its own ensemble members don’t have it. Which makes sense because the pattern forcings firmly support an Aleutian/NPAC ridge pattern.

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Just now, Phil said:

That’s not what happened. :lol: The Euro actually caught onto the second ridge nearly two days before the GFS, which was still projecting an Aleutian low/NPAC jet pattern.

The GFS is the only model with a NPAC trough. Even most of it’s own ensemble members don’t have it.

Maybe you are right about the GFS and the timing.   But the ECMWF and EPS were very wet.   One week ago you were posting some really wet anomaly maps from the EPS for WA, OR and northern CA for this week.

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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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6 minutes ago, TT-SEA said:

Maybe you are right about the GFS and the timing.   But the ECMWF and EPS were very wet.   One week ago you were posting some really wet anomaly maps from the EPS for WA, OR and northern CA for this week.

The GFS was just as wet. I just don’t post GFS maps often.

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Ultimately the pattern forcings are firm enough to render it a transient hiccup on the GFS. But I wonder what will happen come midsummer when the tropical-extratropical teleconnections are slower/of lower amplitude. Could the model just default to that GOA ULL pattern in the LR every other run?

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60 here now. Really beautiful day today puffy clouds good amount of sunshine again as well. Figured yesterday and today would end up a bit more showery here but didn’t happen. 

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Warm Season Stats

+80s-3

+85s-0

+90s-0

Monthly Rainfall-2.14”

Warm Season Rainfall-5.02”

Warmest high temp-84

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15 minutes ago, T-Town said:

Can confirm puffy cloud day in T Town. 

6DE1C1C2-0016-48C5-BF34-86AACDABF20B.jpeg

8B05C499-03D1-4FA6-8D99-230C341DA0E9.jpeg

You have me looking up home prices in Tacoma / University Place... just to see how much those insanely beautiful views cost. 😀

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

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23 minutes ago, TT-SEA said:

You have me looking up home prices in Tacoma / University Place... just to see how much those insanely beautiful views cost. 😀

Since Tim is moving to Tacoma...I bet he would give the forum members a friends and family discount on his place! $300k? 

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1 minute ago, T-Town said:

A lot less than a comparable place in King County. Because, you know, Tacoma is a shithole. 

Its pretty reasonable considering the heavenly views! 

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

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12 minutes ago, T-Town said:

A lot less than a comparable place in King County. Because, you know, Tacoma is a shithole. 

Yea i don’t recommend people live here. Just a big slag pile. 

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Warm Season Stats

+80s-3

+85s-0

+90s-0

Monthly Rainfall-2.14”

Warm Season Rainfall-5.02”

Warmest high temp-84

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Starting to get green. Hope we can have at least normal rainfall in May to keep this going! Remodeling both our bathrooms, hence the toilet on the deck. Lol

2A5584E4-9452-47E8-914F-2B7F19EF8909.jpeg

056CDA1B-DC56-46A4-B817-4201AC2E6261.jpeg

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Snowfall                                  Precip

2020-21: 12.0"                        2020-21: 58.15"

2019-20: 23.5"                   2019-20: 58.54"

2018-19: 63.5"                   2018-19: 66.33"

2017-18: 30.3"                   2017-18: 59.83"

2016-17: 49.2"                   2016-17: 97.58"

2015-16: 11.75"                 2015-16: 68.67"

2014-15: 3.5"
2013-14: 11.75"                  2013-14: 62.30
2012-13: 16.75"                 2012-13: 78.45  

2011-12: 98.5"                   2011-12: 92.67"

 

It's always sunny at Winters Hill! 

 

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Ended up clearing out to the east enough to catch a good moonrise. 

33E38F9D-0A5E-4E24-BE5D-E7B55E416C41.jpeg

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Warm Season Stats

+80s-3

+85s-0

+90s-0

Monthly Rainfall-2.14”

Warm Season Rainfall-5.02”

Warmest high temp-84

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10 hours ago, TacomaWaWx said:

Pretty good amount of sunshine here in the south sound currently...some showers to the E and SE of here but I doubt we get any rain today. 55 currently. 

D3109E43-4E08-4395-97DE-9D44DC0649EF.jpeg

Gorgeous day on the Oregon Coast as well! 

4EEDF3F8-5995-43C3-A6D4-FCFEE2EE5E27.jpeg

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That is quite the western trough next week on the 00Z ECMWF... and yet somehow Portland only manages .16 for the next 10 days on this run (compared to 1.31 on the 12Z run over the same time).   Even Seattle only gets .35 over the next 10 days per this run.

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

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46 minutes ago, TT-SEA said:

That is quite the western trough next week on the 00Z ECMWF... and yet somehow Portland only manages .16 for the next 10 days on this run (compared to 1.31 on the 12Z run over the same time).   Even Seattle only gets .35 over the next 10 days per this run.

That’s a Jim pattern.

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Partly cloudy and 42 this morning.

Had a 57/45 day yesterday with showers and sunbreaks. Picked up 0.05” precip. Moon looked nice with some clearing last evening.

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