Sunday, April 24, 2016

April 24, 2016 Weather update - Isolated severe thunderstorms possible this afternoon/evening in parts of southern Minnesota; Rain (heavy at times) in parts of the Northland today-Monday with gale force E/NE winds near Lake Superior

/Issued 8:29 AM CDT, Sunday, April 24, 2016/

Infrared satellite image and surface features at 8 AM CDT today.

Low pressure of 996mb over southern South Dakota will move slowly toward the east today.  Warm front across south central Minnesota won't move any further north than where it's at right now (Red line on map)

Strong east/northeast winds chilly temperatures and occasional rain (heavy at times) will occur north of the warm front today and tonight, isolated thunderstorms are possible as well.

Warmer and more humid conditions over southern Minnesota, Iowa, eastern Nebraska and southeast South Dakota will lead to the development of scattered strong to severe thunderstorms this afternoon and evening.
















Upper Midwest radar loop ending at 8:15 AM CDT this morning.  Source, WSI.

Green=Rain.  Darker green and yellow colors indicate heavier rainfall.

Will see more rain develop through the day in western and central Minnesota which will then lift north/east into parts of the Northland.














East-northeast gale event over western Lake Superior through Monday.  The largest waves are expected to occur on Monday with wave heights of 8-14 feet.  More information at the link below.

Gale warning -- http://forecast.weather.gov/wwamap/wwatxtget.php?cwa=dlh&wwa=gale%20warning
















12-hour lightning map shown as red, orange and yellow on the map.  There's been quite a bit of thunderstorm activity last night and early this morning in parts of western, central and eastern Minnesota.
















Future radar per 09z HopWRF model.

3 PM today -- Scattered thunderstorm development later this afternoon in southeast South Dakota and eastern Nebraska with a chilly wind driven rain farther north.
















6 PM this evening -- Scattered strong to severe thunderstorms are possible this evening from southwest Minnesota and western Iowa into eastern Nebraska.
















8 AM CDT severe weather outlook valid thru tonight.  Source, WSI; Storm Prediction Center.

Orange=Enhanced risk for severe thunderstorms (3)
Yellow=Slight risk for severe thunderstorms (2)
Light green=Marginal risk for severe thunderstorms (1)
Dark green=Risk for non-severe thunderstorms

Note:  Severe thunderstorms are defined as having damaging wind gusts of 58 mph or stronger and or large hail of 1.00" in diameter or larger.  Isolated tornado threat also exists today primarily over eastern portions of Nebraska, eastern Kansas and far western Iowa.
















09z HopWRF total precipitation forecast ending at 10 PM CDT tonight.
















*Preliminary rainfall totals ending at 7 AM CDT today, Sunday, April 24, 2016*

Source:  National Weather Service Duluth, Minnesota

Duluth, MN:  0.33"
Brainerd, MN:  0.69"
Hayward, WI:  0.99"
3 E of Wright, MN:  0.42"
Cook, MN:  0.26"
Kabetogama, MN:  0.30"
3 E of Orr, MN:  0.24"
4 W of Clam Lake, WI:  0.33"

Tim