Friday, June 30, 2017

Occasional rain showers/Isolated t-storms this evening; More showers late Saturday afternoon-evening; Dry Sunday

/Issued 4:49 PM CDT, Friday, June 30, 2017/

Source:  http://weather.cod.edu

18z RAP model -- 500mb forecast valid for Saturday morning (10 AM)
















Source:  http://www.tropicaltidbits.com

12z European Ensemble model from June 30, 2017 valid for next Thursday, July 3, 2017.  Map below shows the 500mb heights for later next week.














Weather Synopsis

Well the weekend is upon us so that must mean another upper level low will affect us, seems to be the trend so far this summer -- Yes, there is another upper level low pressure system which will pass north of Minnesota over the weekend, and this will bring occasional scattered rain showers to northeast Minnesota and northwest Wisconsin through Saturday night, but unlike the last few upper lows, this one won't stick around very long, and should be out of here by Sunday, in fact Sunday looks like a nice summer day, and it should remain dry the way it looks now.

For tonight...Scattered showers and a few thunderstorms through midnight with coverage and intensity of these showers decreasing overnight.  Locally heavy downpours and occasional lightning will be the main threats with the storms this evening with a lower risk for gusty winds and small hail (Around pea size)  Lows ranging from the upper 40s to upper 50s.

Saturday...Partly sunny to mostly cloudy skies.  Rain showers increasing while moving NW-SE across the Northland.  The best chance for rain during the day should remain north of Highway 2, with locations near and south of Highway 2 having a greater chance for some rain either late Saturday afternoon or Saturday evening.  Highs in the 60s and 70s.

Sunday...Mainly dry with some sunshine.  Highs mainly in the 70s.

Note:  July begins tomorrow (Saturday)  Climate normals for Duluth, Minnesota

Base period for averages:  1981-2010
Base period for records:  1870-2017

Average temperature:  65.8 degrees
Warmest:  71.9 degrees in 2012 and 2006
Coldest:  59.4 degrees in 1992

Normal precipitation:  3.85"
Wettest:  10.83" in 1909
Driest:  0.47" in 1875

Average number of days with a high temperature of at least 80 F:  11
Most number of days at or above 80 F:  25 in 2012
Fewest number of days at or above 80 F:  0 in 1992

Last July climate stats for Duluth, Minnesota

Average temperature:  67.1 degrees (+1.3 degrees above normal)
Total precipitation:  4.39" (+0.54" above normal)
10 days at or above 80 F
1 day at or above 90 F
8 thunderstorm days

Astronomical data for July

Sunrise on the 1st:  5:19 AM CDT
Sunrise on the 31st:  5:47 AM CDT

Sunset on the 1st:  9:06 PM CDT
Sunset on the 31st:  8:41 PM CDT

Forecast for Duluth and Superior

.Tonight...  Scattered showers and isolated thunderstorms mainly before midnight.  Mostly cloudy to partly cloudy.  Low 52 to 57.  Wind variable around 10 mph.

.Saturday...  Partly to mostly cloudy.  High 67 to 72.  Wind west at 10 to 20 mph.

.Saturday night...  Showers during the evening.  Lows in the 50s.

.Sunday...  Some sun.  High 70 to 75.

Normal temperatures for Saturday

High:  75
Low:   54

Sunrise Saturday:  5:19 AM CDT
Sunset Saturday:   9:06 PM CDT

Tim