Thursday, June 30, 2016

June 30, 2016: Rainfall and storm reports from around the Northland today; Cool tonight; Around 70 with lots of sun Friday

/Issued 5:35 PM CDT, Thursday, June 30, 2016/
















Low temperature forecast for tonight.  Source, National Weather Service Duluth, Minnesota.




















High temperature forecast for Friday.  Source, National Weather Service Duluth, Minnesota.




















Local Storm Reports for June 30, 2016
Source:  National Weather Service Duluth, Minnesota

*4:30 PM CDT:  HAIL.  0.25" diameter.  2 S of Glidden, WI (Ashland County)

*1:55 PM CDT:  HAIL.  0.25" diameter.  3 NE of Hermantown, MN (St. Louis County)  Fell at the National Weather Service.

*4:35 PM CDT:  THUNDERSTORM WIND GUST.  31 mph.  3 N of Siren, WI (Burnett County)

*4:06 PM CDT:  THUNDERSTORM WIND GUST.  37 mph.  11 SSE of Brule, WI (Bayfield County)

July climate averages for Duluth, Minnesota

Temperature:  65.8 degrees
Precipitation:  3.85"

Warmest July on record:  71.9 degrees in 2006 and 2012
Coldest July on record:  59.4 degrees in 1992

Wettest July on record:  10.83" set in 1909
Driest July on record:  0.47" set in 1875

Average number of days with a high temperature of at least 70 F:  25
Average number of days with a high temperature of at least 80 F:  11

July astronomical data:

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:  8:42 PM CDT

Rainfall report for June 30, 2016
Source:  MesoWest.com

Ashland, WI:  0.97"
Grand Marais, MN:  0.77"
Ely, MN:  0.40"
Grand Rapids, MN:  0.38"

Silver Bay, MN:  0.32"
Superior, WI:  0.23"
Two Harbors, MN:  0.19"
Cook, MN:  0.19"

Orr, MN:  0.18"
Duluth, MN (Airport)  0.15"
Aitkin, MN:  0.11"

Weather Summary for NE Minnesota and NW Wisconsin
Date:  June 30, 2016

The final day of June brought with it some thunder boomers as cold temperatures aloft combined with warmer temperatures near the surface made the atmosphere a little unstable -- Throw in a rather vigorous upper level system which moved into the Upper Midwest and western Great Lakes today and you have a pretty good setup for scattered showers and a few thunderstorms.  The amount of deep layer wind shear was somewhat better today vs. Wednesday but still not enough to cause any severe weather, but a few of the storms today were on the strong side with cloud to ground lightning, gusty winds, small hail and brief heavy rain.  Outside of the rain, skies were partly sunny to mostly cloudy today with high temperatures generally in the 60s to lower 70s.  Winds were out of the north or northwest at 10 to 20 mph.

Forecast Discussion for NE Minnesota and NW Wisconsin

Confidence:  High.

Tonight:  Scattered showers along with a few thunderstorms will come to an end this evening.  Expect mostly cloudy skies to gradually clear out from north to south later in the night.  Lows will be in the 40s with 30s in the typical cold spots, similar to two nights ago.  Winds will be out of the north or northwest at 5 to 15 mph.

Friday:  Mostly sunny skies with highs in the 60s and 70s.  Clear to partly cloudy Friday night with lows in the 40s and 50s.  Winds out of the west or northwest at 10 to 15 mph.

Saturday:  Partly to mostly cloudy.  Highs mainly in the 70s with winds turning to the south or east.

The main feature on the weather map through Saturday will be high pressure which will build southeast into the Northland.

Tim