Wednesday, April 27, 2016

April 27, 2016 Weather Report - Looking back at the deadly tornado outbreaks of April 2011 and April 1974; "Researchers discover 'tsunamis' on Great Lakes". Gusty east winds continue near Lake Superior; Snow tonight in parts of South Dakota

/Issued 5:33 PM CDT, Wednesday, April 27, 2016/

Looking back at the deadly tornado outbreak 5 years ago from April 26-28, 2011.  Source, NOAA.












Comparing the Super Outbreaks of April 1974 and April 2011 - Source, ustornadoes.com

































Full story from ustornadoes.com at the following link - http://www.ustornadoes.com/2013/04/26/discussing-the-super-outbreaks-of-1974-and-2011-was-one-more-super-than-the-other/

A wicked spring storm whipped up monster size waves along the North Shore of Lake Superior on Monday, April 25, 2016 -- More at this link:  http://www.startribune.com/epic-size-waves-crash-on-lake-superior-s-shore/377327461/

Tsunamis on the on Great Lakes, wait, what??? -- http://www.duluthnewstribune.com/news/4017706-researchers-discover-tsunamis-great-lakes

Tonight's low temperature forecast.  Source, National Weather Service Duluth, Minnesota.




















Thursday's high temperature forecast.  Source, National Weather Service Duluth, Minnesota.




















A significant severe weather event on April 26, 2016 but the number of tornadoes was quite low at 8.  Damaging wind and large hail made up most of the storm reports from Tuesday.  Source, Storm Prediction Center.

Red dots=Tornado
Blue dots=Damaging winds (58 mph or stronger)
Green dots=Large hail (1.00" or greater in diameter)















Warnings map for April 27, 2016 - Over 150 warnings Thru 5 PM.

Red polygons=Tornado warning
Blue polygons=Severe thunderstorm warning
Green=Flash flood warning













Over 500 warnings on April 26, 2016.

Red polygons=Tornado warning
Blue polygons=Severe thunderstorm warning
Green=Flash flood warning













Visible satellite image/weather conditions from 5 PM CDT, April 27, 2016.
















Snow tonight in parts of South Dakota.  RAP model (20z run) snowfall accumulation forecast.




















Weather Summary for NE Minnesota and NW Wisconsin
Date:  April 27, 2016

Strong low pressure of 998mb was over southeast Nebraska late this afternoon with strong high pressure of 1026mb over western Ontario Province.  Sunshine this morning gave way to increasing cloudiness over all but extreme northern Minnesota this afternoon.  High temperatures were mainly in the 50s today with the usual cooler 30s and 40s closer to Lake Superior.  Winds were out of the east or northeast at 10 to 20 mph with gusts to 30 mph near Lake Superior for the 4th day in a row.

Forecast Discussion for NE Minnesota and NW Wisconsin

Short Term Forecast - Confidence:  High.

Tonight through Thursday night (April 27-28)

Low pressure will track from southeast Nebraska to the Ohio Valley through Thursday night while high pressure remains to our north over Ontario Province.  Partly to mostly cloudy skies are expected in our area.  There is a chance for a few rain showers in far southern portions of the Northland tonight and Thursday, dry elsewhere.  Low temperatures tonight and Thursday night will mainly be in the 30s with highs on Thursday in the 40s and 50s.  I bet you know what direction the wind will be coming out of...East or northeast at 10 to 20 mph with gusts over 30 mph near Lake Superior.

Extended Forecast - Confidence:  High.

Friday through Sunday (April 29-May 1)

Dry this weekend but still on the cool side especially near Lake Superior.  High pressure remains to our north while another area of low pressure tracks east/northeast out of the southern and central Plains -- Rain associated with this storm will stay well south of the Northland the way it looks now.  High temperatures on Friday, Saturday and Sunday are forecast to be in the 50s with 40s near Lake Superior.  Low temperatures Friday night and Saturday night will be in the 30s but 20s are possible in the typical cold spots.

Long Range Forecast - Confidence:  Medium to High.

(May 2-7)

High temperatures should warm into the 50s and 60s next week which is pretty close to average for early May.  It looks like will get rid of the east wind in Duluth so the milder temperatures should also occur below the hill in Duluth next Monday-Wednesday (May 2-4)

Could be some showers around parts of the Northland on the 3rd-4th but no major rain events through the long range the way it looks now.

5 DAY FORECAST FOR DULUTH AND SUPERIOR

.Tonight...  Windy.  Partly to mostly cloudy.  Low 30 to 35.  Wind east to northeast at 15 to 30 mph.

.Thursday...  Windy.  Partly sunny.  High 40 to 45.  Wind east to northeast at 15 to 30 mph.

.Thursday night...  Partly cloudy.  Low 30 to 35.  Wind northeast at 10 to 20 mph.

.Friday...  Partly cloudy.  High 48 to 53 but cooler near Lake Superior.

.Friday night...  Mostly clear.  Low 30 to 35.

.Saturday...  Partly to mostly sunny.  High 45 to 50 but cooler near Lake Superior.

.Saturday night...  Partly to mostly cloudy.  Low 30 to 35.

.Sunday...  Partly sunny.  High 48 to 53 but cooler near Lake Superior.

Normal temperatures for Thursday

High:  56
Low:   35

Sunrise Thursday:  5:57 AM CDT
Sunset Thursday:   8:15 PM CDT

Tim