Friday, April 1, 2016

April 1, 2016 Weather Report - Snow late tonight; More snow on Sunday. Future radar and a snowfall map for tonight's event included in this post

/Issued 6:03 PM CDT, Friday, April 1, 2016/

Future radar per 18z HopWRF model.  Note:  On the maps below the darker green colors usually mean heavier snowfall rates.





























































Total snowfall accumulation map for tonight and Saturday morning per 18z HopWRF model.
















Winter Weather Advisory for the purple shaded area on the map.  More information at the link below.  Source, Aeriesweather.com; National Weather Service Duluth, Minnesota.

Winter Weather Advisory -- http://forecast.weather.gov/wwamap/wwatxtget.php?cwa=dlh&wwa=winter%20weather%20advisory
















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




















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




















March 2016 climate summaries for select cities
Source:  National Weather Service Duluth, Minnesota

Duluth, MN:

Average temperature:  31.6 degrees
Departure:  +5.7 degrees above normal
Note:  Tied with 1987 for 13th warmest March on record.

Total precipitation:  3.96"
Departure:  +2.47" above normal
Note:  This was the 5th wettest March on record.

Total snowfall:  17.3"
Departure:  4.1" above normal

International Falls, MN:

Average temperature:  29.2 degrees
Departure:  +5.6 degrees above normal

Total precipitation:  2.71"
Departure:  +1.76" above normal

Total snowfall:  9.3"
Departure:  +1.7" above normal

Twin Cities, MN:

Average temperature:  41.3 degrees
Departure:  +8.5 degrees above normal

Total precipitation:  2.26"
Departure:  +0.37" above normal

Total snowfall:  5.4"
Departure:  -4.9" below normal

St. Cloud, MN:

Average temperature:  38.3 degrees
Departure:  +8.9 degrees above normal

Total precipitation:  1.50"
Departure:  -0.05" below normal

Total snowfall:  3.0"
Departure:  -5.5" below normal

Marquette, MI:

Average temperature:  29.3 degrees
Departure:  +5.1 degrees above normal

Total precipitation:  3.34"
Departure:  +0.31" above normal

Total snowfall:  18.8"
Departure:  -16.1" below normal

April climate averages for Duluth, Minnesota - Airport location

Normal high on the 1st:  41 degrees
Normal high on the 30th:  57 degrees

Normal low on the 1st:  24 degrees
Normal low on the 30th:  36 degrees

Normal temperature:  39.6 degrees
*Record warmest April:  46.1 degrees set in 2010 and in 1987
*Record coldest April:  28.7 degrees set in 1950

Normal precipitation:  2.43"
*Record wettest April:  8.18" set in 2001
*Record driest April:  0.24" set in 1987

Normal snowfall:  6.9"
*Record snowiest April:  50.8" set in 2013

Astronomical data for April:

Sunrise on the 1st:  6:48 AM CDT
Sunrise on the 30th:  5:55 AM CDT

Sunset on the 1st:  7:37 PM CDT
Sunset on the 30th:  8:16 PM CDT

Weather Summary for NE Minnesota and NW Wisconsin
Date:  April 1, 2016

A chilly NW flow aloft is in place as we kick off the month of April.  Mid level temperatures were right around -36 C today, this combined with low level lapse rates greater than 7.0 c/km helped to develop brief but potent snow showers in parts of the area today with visibility down to less than a mile at times with a quick coating to 1" of snow accumulation in some areas.  Partly sunny to mostly cloudy skies this morning gave way to increasing amounts of sun this afternoon in Northeast Minnesota while a mix of clouds/sun continued in Northwest Wisconsin.  High temperatures today were in the upper 20s to mid 30s with winds from the northwest at 10 to 20 mph with higher gusts.

Forecast Discussion for NE Minnesota and NW Wisconsin

Short Term Forecast - Confidence:  High.

Tonight (April 1)

Increasing clouds this evening -- Snow begins before Midnight in northwest parts of the area, snow will then spread south/east after Midnight.  Low temperatures will be in the teens and 20s with northwest winds this evening turning south, east or north for a time late tonight.  Wind speeds will be in the 5 to 15 mph range with higher gusts possible in western portions of the area Overnight.

Saturday and Saturday night (April 2)

Low pressure which will bring snow to the Northland late tonight exits to the south/east on Saturday but the next system will already be moving into the Northern Plains by Saturday night.

Snow showers and flurries tomorrow morning then mainly dry conditions from tomorrow afternoon through tomorrow evening.  Lake effect snow showers will occur though along the South Shore of Lake Superior on Saturday thanks to the cold air moving over Lake Superior and a favorable northwest wind direction crossing Lake Superior.

Highs tomorrow will be in the 20s to around 30 degrees with northwest winds at 15 to 30 mph.

Low temperatures Saturday night will be in the teens and 20s under partly to mostly cloudy skies.  Light snow could develop late in Northern Minnesota.  Winds tomorrow night will shift to the south or east.

Extended Forecast - Confidence:  Medium.

Sunday through Tuesday (April 3-5)

Snow and mixed precipitation will be possible in parts of the area on Sunday as low pressure moves southeast out of the Northern Plains.  Note:  The placement of the main snow band is uncertain right now with a few computer models keeping the bulk of the snow north of Duluth while others have it moving right through Duluth.  Stay tuned!  Under this snow band, accumulations of 1-4" will be possible on Sunday.

Could be some lingering snow showers and flurries mainly near Lake Superior Sunday night and Monday, mainly dry elsewhere.

The next system moves in on Tuesday with a chance for snow or rain.

High temperatures on Sunday will be in the 20s and 30s with lows Sunday night in the teens and 20s.  Highs on Monday will be in the 30s to around 40 degrees with 20s in far Northeast Minnesota, lows Monday night will be in the 20s.  Highs on Tuesday are forecast to be in the 30s to around 40 degrees.

Long Range Forecast - Confidence:  Medium to High.

(April 6-11)

Below average temperatures are expected to continue through the long range.  Snow or rain chances on Wednesday (6th) and possibly again during the 8th-10th time frame.

5 DAY FORECAST FOR DULUTH AND SUPERIOR

Event:  *WINTER WEATHER ADVISORY*
Timing:  Midnight tonight until 6 AM CDT Saturday.

.Tonight...  Mostly clear early followed by increasing cloudiness before Midnight.  Snow after Midnight.  Total snowfall accumulations of around 2-3" possible by daybreak.  Low 20 to 25.  Wind west to northwest at 10 to 20 mph this evening becoming north toward daybreak.

.Saturday...  Windy.  Flurries or snow showers possible mainly before Noon.  Partly to mostly sunny.  High 25 to 30.  Wind northwest at 15 to 30 mph.

.Saturday night...  Mostly clear during the evening.  Increasing cloudiness late.  Low 16 to 21.  Wind northwest at 10 to 20 mph becoming east late.

.Sunday...  Light snow or mixed precipitation possible.  High 27 to 32.

.Sunday night...  Mostly cloudy.  Flurries possible.  Low 20 to 25.

.Monday...  Partly sunny.  High 30 to 35.

.Monday night...  Partly cloudy.  Low 20 to 25.

.Tuesday...  Mostly cloudy.  Light snow or rain possible mainly late.  High 35 to 40.

Normal temperatures for Saturday

High:  42
Low:  24

Sunrise Saturday:  6:45 AM CDT
Sunset Saturday:   7:40 PM CDT

Tim