2022-2023 California and Southwest Weather Thread

[Reg]

15 hours ago, IMoveALot_Weather said:

Looked back in the recordbooks a bit to see if we'd come close to any records... We won't (turns out that this sort of coolness was actually pretty commonplace in the early 20th century), but I noticed that on 6/22/1919, the maximum temp in Riverside that day was 102*F (2nd highest on record) and the minimum temp was 46*F (T-2nd lowest on record). Guess marine layer wasn't a thing that year.

I noticed this as well when going through Riverside's archived weather data (which is admittedly incomplete/has significant data gaps) as well as that of more established stations like that of Downtown L.A. and San Diego. Much cooler, even during the summer, up through roughly the 1960s. Lake Elsinore shows some bizarre data from the early 20th century, lows in the 40s were not uncommon during the summer months and at least once dipped to 39F during one August, while remaining in the 90s or even triple-digits during the daytime. Could also have been inaccurate/unreliable measurements from the time or faulty observations, I don't know. But, Southern California was definitely much colder in the early 20th century indeed (and a bit drier too, interestingly).

I created these graphs (and dozens of others) a few years ago, showing daily temperatures for Riverside and Lake Elsinore for certain years. Note the very wide temperature ranges compared to the warmer, more recent late 20th century years. Data obtained from the NDCC archives.

[Reg]

Reverse clearing happening this morning. Sky was clear when I woke up before sunrise; at sunrise the marine layer starting coming over the lower parts of the Santa Ana Mountains, and now late morning and the marine layer is hovering right over us and it's becoming less sunny.

[Anti Marine Layer]

Looks like more sun than expected today.

[Anti Marine Layer]

Not the shortest shadow of the year, but close enough. 

[Anti Marine Layer]

Las Vegas could finally reach 100 by next Wednesday, which is in the forecast now and then 103 for Thursday, but they've been kicking the can as to when any significant ridging will develop.

 

[Anti Marine Layer]

Quite cool for a sunny afternoon but it's better than all day June Gloom. 

[Anti Marine Layer]

Wow. Riverside is mostly cloudy now. Sunny here.

[Anti Marine Layer]

[Reg]

Third night in a row with a low of 52F.

[Thunder98]

2023 has been super cool this year. Here's the max temps for every month since 2000. The avg high for June is 71F here and the highest temp so far is only 71F.

 

 

[Anti Marine Layer]

Inversion was weak and it was a fast moving low.

[Thunder98]

2 minutes ago, Anti Marine Layer said:

Inversion was weak and it was a fast moving low.

same here, marine layer was thin and fell apart fast

[Anti Marine Layer]

NorCal and Oregon got the worst marine layer from this one.

Downtown LA's coldest June on record (for the avg. high) is becoming quite unlikely now, assuming the forecast for the last 7 days holds, but they will still probably be in the top 10 if not the top 5.

Lots of suspense though the first half of June.

[Anti Marine Layer]

Starting out sunny again. Overnight lows continue to be remarkably cool, but we need to get our normal early spring weather sometime this year. 

Still looks to warm up by the end of June. 

[Anti Marine Layer]

20 hours ago, Thunder98 said:

2023 has been super cool this year. Here's the max temps for every month since 2000. The avg high for June is 71F here and the highest temp so far is only 71F.

 

 

Was 2023 super cool last year too?

[Anti Marine Layer]

High clouds passing above. They are prettier than the stratus clouds.

[Thunder98]

The above avg sst anomlies along the CA coast has been wiped out and reversed due to the strong winds this week. @Anti Marine Layer

 

 

[Anti Marine Layer]

53 minutes ago, Thunder98 said:

The above avg sst anomlies along the CA coast has been wiped out and reversed due to the strong winds this week. @Anti Marine Layer

 

 

Could be part of the reason the nights have been so cool. It's starting to feel like late April should be here.

[Anti Marine Layer]

Nauseating

[Anti Marine Layer]

Here's where Downtown LA averages so far, with 7 days to go.

Looks like 1981 was pretty nice.

Year	JuneAvgHi
1965	71.10
1944	71.60
1982	71.70
1923	71.90
2023	71.96
1934	72.03
1945	72.17
1913	72.47
1916	72.50
1969	72.67
1911	72.83
1928	72.90
1938	73.00
1908	73.10
1910	73.10
1975	73.20
1920	73.23
1964	73.30
1927	73.33
2003	73.43
1963	73.67
1921	73.73
1894	73.83
1905	73.97
1914	74.03
1967	74.07
1909	74.17
1942	74.23
1933	74.30
1952	74.33
1912	74.37
1899	74.47
2011	74.47
1962	74.50
2009	74.53
1935	74.70
1932	74.73
1940	74.80
1941	74.87
1878	74.90
1907	74.93
1951	75.10
1903	75.13
1991	75.13
1955	75.27
1926	75.33
1901	75.40
1892	75.60
2005	75.63
1939	75.70
2012	75.70
1947	75.73
1880	75.83
1930	75.87
1897	75.97
1915	75.97
1925	75.97
1948	75.97
1937	76.00
2019	76.03
1954	76.07
1998	76.07
1889	76.10
1999	76.13
1953	76.20
1950	76.27
2004	76.30
2002	76.33
1988	76.40
1943	76.43
1971	76.47
2014	76.73
1983	76.80
1968	76.93
1902	77.03
2010	77.10
1895	77.37
1989	77.40
1995	77.40
1900	77.50
1929	77.57
2007	77.63
1879	77.70
1898	77.77
1904	77.77
1922	77.77
1997	77.80
1936	77.87
1970	77.87
1977	77.87
1891	77.93
2013	78.00
1924	78.03
1884	78.07
1882	78.23
2018	78.23
1961	78.40
1893	78.50
1992	78.80
1966	78.87
1917	78.90
1931	78.90
1890	79.13
1946	79.13
2015	79.13
1987	79.17
1906	79.33
1918	79.33
1919	79.37
1960	79.40
2021	79.43
1984	79.47
1949	79.50
2020	79.53
1956	79.83
2001	79.83
2017	79.93
2000	79.97
2016	80.03
2022	80.07
1896	80.10
1881	80.20
1958	80.77
1979	80.77
1886	80.87
2008	80.97
1885	81.00
1986	81.00
1972	81.03
1993	81.07
1887	81.13
1959	81.20
1996	81.30
1976	81.53
1974	81.57
1980	81.60
1978	81.70
1888	82.23
1973	82.40
1957	82.60
2006	82.90
1985	83.10
1994	83.87
1990	84.43
1883	84.73
1981	86.80

[Anti Marine Layer]

Looks like a fairly typical day for Eureka today. 57 and overcast.

[Anti Marine Layer]

2003 for y'all

06/01/03  FUL  :      FULLERTON AIRPORT   96 :   77 /  62 /  0.00 /
06/02/03  FUL  :      FULLERTON AIRPORT   96 :   72 /  62 /  0.00 /
06/03/03  FUL  :      FULLERTON AIRPORT   96 :   69 /  61 /     T /
06/04/03  FUL  :      FULLERTON AIRPORT   96 :   75 /  61 /  0.00 /
06/05/03  FUL  :      FULLERTON AIRPORT   96 :   68 /  62 /     T /
06/06/03  FUL  :      FULLERTON AIRPORT   96 :   70 /  61 /  0.01 /
06/07/03  FUL  :      FULLERTON AIRPORT   96 :   72 /  63 /  0.00 /
06/08/03  FUL  :      FULLERTON AIRPORT   96 :   69 /  63 /  0.00 /
06/09/03  FUL  :      FULLERTON AIRPORT   96 :   67 /  61 /     T /
06/10/03  FUL  :      FULLERTON AIRPORT   96 :   72 /  59 /     T /
06/11/03  FUL  :      FULLERTON AIRPORT   96 :   74 /  63 /  0.00 /
06/12/03  FUL  :      FULLERTON AIRPORT   96 :   73 /  59 /  0.00 /
06/13/03  FUL  :      FULLERTON AIRPORT   96 :   77 /  61 /  0.00 /
06/14/03  FUL  :      FULLERTON AIRPORT   96 :   80 /  58 /  0.00 /
06/15/03  FUL  :      FULLERTON AIRPORT   96 :   78 /  62 /  0.00 /
06/16/03  FUL  :      FULLERTON AIRPORT   96 :   75 /  63 /  0.00 /
06/17/03  FUL  :      FULLERTON AIRPORT   96 :   76 /  63 /  0.00 /
06/18/03  FUL  :      FULLERTON AIRPORT   96 :   73 /  63 /  0.00 /
06/19/03  FUL  :      FULLERTON AIRPORT   96 :   68 /  62 /  0.00 /
06/20/03  FUL  :      FULLERTON AIRPORT   96 :   68 /  60 /  0.00 /
06/21/03  FUL  :      FULLERTON AIRPORT   96 :   68 /  61 /     T /
06/22/03  FUL  :      FULLERTON AIRPORT   96 :   67 /  62 /     T /
06/23/03  FUL  :      FULLERTON AIRPORT   96 :   72 /  62 /  0.00 /
06/24/03  FUL  :      FULLERTON AIRPORT   96 :   75 /  62 /  0.00 /
06/25/03  FUL  :      FULLERTON AIRPORT   96 :   84 /  58 /  0.00 /
06/26/03  FUL  :      FULLERTON AIRPORT   96 :   88 /  61 /  0.00 /
06/27/03  FUL  :      FULLERTON AIRPORT   96 :   82 /  63 /  0.00 /
06/28/03  FUL  :      FULLERTON AIRPORT   96 :   77 /  63 /  0.00 /
06/29/03  FUL  :      FULLERTON AIRPORT   96 :   84 /  62 /  0.00 /
06/30/03  FUL  :      FULLERTON AIRPORT   96 :   84 /  62 /  0.00 /

[Anti Marine Layer]

Brutal

[Anti Marine Layer]

Nice afternoon again.

[Anti Marine Layer]

On 6/23/2023 at 11:11 AM, Thunder98 said:

2023 has been super cool this year. Here's the max temps for every month since 2000. The avg high for June is 71F here and the highest temp so far is only 71F.

 

It's redundant because this year is 2023. The weather has been redundantly cool too, although it looks like 77 F was reached for Downtown LA before the sea breeze push.

[Anti Marine Layer]

Hills are getting brown. 

[Thunder98]

3 hours ago, Anti Marine Layer said:

It's redundant because this year is 2023. The weather has been redundantly cool too, although it looks like 77 F was reached for Downtown LA before the sea breeze push.

2023 will be known as the mini ice age for California

[Anti Marine Layer]

Downtown LA average high for June 2023 has been bumped up to 72.21 F with 6 days remaining. They would now need to average below 66.67 F for the last 6 days of June to break the coldest average high record for June, so it's starting to look very unlikely. 

[Anti Marine Layer]

A few low clouds appeared for a short time around 5:30 PM, but now they are gone again.

[Anti Marine Layer]

[Anti Marine Layer]

Eddy appears to be back this morning

[Thunder98]

Yuck!

 

 

[Anti Marine Layer]

On the 12th day of troffiness the marine layer gave to me

12 people happy it's not 90 degrees 

[Anti Marine Layer]

Jacarandas are finally going into full bloom.

[Anti Marine Layer]

Breezy again 

[Thunder98]

This weekend is looking very nice! Highs are now forecasted in the upper 70’s.

 

 

[the_convergence_zone]

The big ECMWF upgrade happens tonight!

The entire 50-member ensemble will have higher resolution (9km) than the deterministic GFS (13km). And the “weeklies” will now run daily with 101 members at 36 km resolution. 
 

 

[Anti Marine Layer]

Low clouds made a late arrival this morning. 

[Winter Weather Hater]

Woo hoo!! Lame cold weather is finally over.  I'm really excited about this heatwave!!!  low 100s in Sacramento has been long long overdue!!

The low of 52 this morning is absurdly cold for late June.   I hate how unsummer-like it has been in the Sacramento area all June.

[Winter Weather Hater]

On 6/25/2023 at 9:16 AM, Anti Marine Layer said:

On the 12th day of troffiness the marine layer gave to me

12 people happy it's not 90 degrees 

I am not one of them