Monday, April 20, 2015

Still Breezy and Cool; Feels Like Fall

St. Michael/Albertville Makes Kraft Hockeyville's Top 4 !!

WOW! The St. Michael/Albertville community has been nominated as one of the TOP 4 FINALISTS in Kraft Hockeyville's Grandprize: $150,000 for rink upgrades and chance to host an NHL pre-season hockey game!! They need your help in the voting process!

Voting Starts: MON, APRIL 20 AT 11:00PM CST
Voting Ends: WED, APRIL 22 AT 10:59PM CST

Learn more at VoteSTMA.com HERE:

Learn more about the Kraft Hockeyville HERE:



The Common Loon Returns...
Thanks to my good friend, Bill Doms, for the picture below. He snapped a wonderful picture of this loon on an area lake over the weekend. Interestingly, Loons "travel from their winter home along the Atlantic coast from North Carolina south to Florida, or on the Gulf of Mexico."

Read more about the Common Loon from the MN DNR HERE:

See more of Bill Doms' great pictures at his website www.mnwxchaser.com HERE:



Feels Like Fall
By Todd Nelson

This cold and windy weather makes me want to drag out the crockpot again. I feel like warm, hearty meals help take the edge off the cool, cloudy, windy weather. Interestingly, I haven't had an urge like this since last Fall when the leaves were falling off the trees, now they're showing up on trees again.

A large area of low pressure continues to spin north of the Great Lakes Region. Due to it's stationary nature, it will continue to funnel down cooler Canadian air, which will be nearly 10F to 15F cooler than normal for this time of the year. There may even be some light, slushy snow accumulations across the far northern part of the state through Wednesday!

Weather conditions will slowly improve through the week, with gradually more sunshine and winds subsiding, finally, by the end of the week. Although we'll still be a little cooler than average by the week's end/weekend, at least we'll be a little closer to normal.

Extended model runs suggest temperatures getting back to above average by the end of the month with chances of thunderstorms returning! MSP is ~1.75" below average precip since Jan. 1st; 92% of MN is in Moderate Drought! We need rain!

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MONDAY NIGHT: Windy and cool. Light rain/snow mix possible, mainly north. Low: 33. Winds: WNW 15-35mph
TUESDAY: Light rain/snow mix possible early, mainly north, then changing to sprinkles/light rain showers. Still windy and cool. High: 46. Winds: WNW 15-30
TUESDAY NIGHT: Mostly cloudy, windy and cool. Low: 31. Winds: NW: 15-30mph
WEDNESDAY: Mix of clouds and sun. Still breezy. High: 48. Winds: NW 15-30mph
THURSDAY: More sun, light jacket worthy. Wake-up: 30. High: 49
FRIDAY: Less wind, a little warmer. Wake-up: 31 High: 52
SATURDAY: Still below average for April. Wake-up: 34. High: 53.
SUNDAY: Nothing rough. Wake-up: 35. High: 54.
MONDAY: Still cool for April. Wake-up: 36. High: 56.

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This Day in Weather History
April 21st

1910: Snowstorm hits northeastern Minnesota. Duluth picks up 6.5 inches.

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Average High/Low for Minneapolis
April 21st

Average High: 61F (Record: 95F set in 1980)
Average Low: 40F (Record: 22F set in 1966)

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Sunrise/Sunset Times for Minneapolis
April 21st

Sunrise: 6:18am
Sunset: 8:06pm

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Moon Phase for April 21st at Midnight
3.5 Days Since New Moon




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Minneapolis Temperature Trend
Cool, windy weather will continue through the week ahead. Temperatures will actually be running nearly 10F to 20F below average through the week ahead! We'll see a gradual warming trend by the weekend with reading finally back to near/above average levels by the end of the month.



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Tuesday Weather Outlook
We'll still be under the influence of the large upper level low spinning near the Great Lakes Region on Tuesday. Note the large wind field, stretching from the Red River Valley into the Ohio Valley. Winds in this particular zone could once again be 20mph to 40mph+. With temperatures in the 30s and 40s across much of the state, it'll be reminiscent of a Fall day.



Tuesday Weather Outlook 
Wrap around moisture will continue into Tuesday and with temperatures near freezing, some of the moisture will be in the form on snow! I could see minor accumulations possible across the extreme northern part of the state through midweek.



Simulated Radar
The bulk of the precipitation has moved off to the east, but wrap around moisture will continue through midweek. Any additional precipitation should remain light and stay confined to mainly the northern part of the state. Also note the blue mixing in AM Tuesday - AM Wednesday!



Precipitation Outlook
The precipitation outlook through PM Wednesday doesn't look all that impressive, but up to 0.1" to 0.2" may be possible along the international border.


Snowfall Potential
We're still getting indications that up to a couple/few inches of slushy snow may accumulation near the international border through PM Wednesday.


Upper Level Low
Take a look at the 500mb vorticity (spin) map below. Note the big ball over the Great Lakes Region/Ontario... that's our current weather maker causing all the cool/windy weather close to home. Unfortunately, it will be in no hurry to move out of there as it has diverted the upper level steering winds around it!


Midweek 850mb Temps
This storm system will also be responsible for the big and continued cool down across the eastern two-thirds of the nation through the week. Note the strong winds blowing out of Canada on the backside of the center of low pressure in Ontario. Again, it weather feature looks to be nearly stationary through the week ahead.


Wednesday Highs
High temperatures on Wednesday in the Midwest/Great Lakes Region look more like readings in March. 30s and 40s will be found across the far north, while highs in the 50s and 60s will be found across the Ohio Valley/Middle Mississippi Valley.


Wednesday Highs From Average
Highs on Wednesday will be running nearly 10F to 20F below average! The good news is that this chilly weather looks to gradually fade a bit by the end of the month.


National Weather Outlook
Our stubborn and slow moving storm system will be in no hurry to exit the Great Lakes Region/Ontario. Note how the area of low pressure seems to get stuck in this area for several days. Unfortunately, that means more windy, cool weather for us with wrap around light rain/snow showers near the international border. Another area of low pressure looks to develop across the Southern Plains by midweek, kicking off another round of showers/storms, some of which could be strong to severe.


Severe Threat Tuesday
...SUMMARY... THUNDERSTORM DEVELOPMENT IS EXPECTED TO TAKE PLACE EARLY TUESDAY EVENING ACROSS THE SOUTHERN PLAINS WHERE LARGE HAIL AND WIND DAMAGE WILL BE POSSIBLE. THUNDERSTORMS MAY ALSO FORM OVER PARTS OF THE SOUTHERN AND CENTRAL ROCKIES...EASTERN GREAT LAKES...SOUTH-CENTRAL FLORIDA PENINSULA AND IN THE SIERRA NEVADA. ...SRN PLAINS... AN UPPER-LEVEL RIDGE IS FORECAST TO MOVE EWD INTO THE SRN ROCKIES ON TUESDAY AS A SFC LOW DEVELOPS ACROSS THE SRN HIGH PLAINS. LOW-LEVEL FLOW IS FORECAST TO STRENGTHEN ACROSS THE SRN PLAINS TUESDAY RESULTING IN MOISTURE ADVECTION WITH SFC DEWPOINTS INCREASING INTO THE LOWER 60S F ACROSS MUCH OF THE TX HILL COUNTRY. FURTHER NORTHWEST...SFC DEWPOINTS COULD REACH THE MID TO UPPER 50S F IN THE LOW ROLLING PLAINS BY LATE AFTERNOON. AN AXIS OF INSTABILITY IS FORECAST TO BE IN PLACE BY LATE AFTERNOON ALONG THE ERN EDGE OF THE CAPROCK WHERE MLCAPE VALUES COULD REACH 1500 J/KG. IN ADDITION...NAM FORECAST SOUNDINGS FOR CHILDRESS AT 03Z/WED SHOW 40-45 KT OF 0-6 KM SHEAR WITH 700 TO 500 MB LAPSE RATES NEAR 8.5 C/KM. THE STEEP LAPSE RATES AND MODERATE DEEP-LAYER SHEAR WOULD SUPPORT LARGE HAIL IF CELLS CAN INITIATE ACROSS WEST TX DURING THE EVENING. THE NAM...GFS AND ECMWF AGREE THAT CELLS WILL DEVELOP BY TUESDAY EVENING BUT ARE IN SLIGHTLY DIFFERENT LOCATIONS. THIS GIVES ENOUGH CONFIDENCE TO KEEP THE SLIGHT RISK IN PLACE OVER THE LOW ROLLING PLAINS. EVEN IF INITIATION TAKES PLACE LATER IN THE EVENING...THE INCREASE IN INSTABILITY SHOULD MAINTAIN POTENTIAL FOR SUPERCELLS WITH LARGE HAIL. THE ACTIVITY MAY BECOME ELEVATED BUT HAIL COULD STILL OCCUR AS A LOW-LEVEL JET STRENGTHENS ACROSS THE SRN PLAINS LATE IN THE EVENING AND INTO THE OVERNIGHT PERIOD.

Severe Threat Wednesday
...SUMMARY... THUNDERSTORMS WITH WIND DAMAGE AND LARGE HAIL ARE EXPECTED TO DEVELOP FROM THE SOUTHERN PLAINS SOUTHEASTWARD ACROSS THE ARKLATEX AND INTO THE LOWER MISSISSIPPI VALLEY. MARGINALLY SEVERE THUNDERSTORMS MAY DEVELOP ACROSS PARTS OF THE SOUTHERN AND CENTRAL HIGH PLAINS AND IN SOUTH CENTRAL TEXAS. THUNDERSTORM DEVELOPMENT MAY ALSO OCCUR ACROSS PARTS OF THE CENTRAL TO NORTHERN ROCKIES AND SIERRA NEVADA. ...SRN PLAINS/ARKLATEX AN UPPER-LEVEL RIDGE IS FORECAST TO MOVE EWD ACROSS THE SRN ROCKIES ON WEDNESDAY AS SFC LOW PRESSURE IN THE SRN HIGH PLAINS DEEPENS AND MOVES SEWD. A WARM FRONT MAY BE PRESENT ACROSS SRN OK EXTENDING ESEWD INTO AR. ALONG AND SOUTH OF THE BOUNDARY...SFC DEWPOINTS SHOULD BE IN THE LOWER TO MID 60S WITH MODERATE INSTABILITY DEVELOPING ACROSS MUCH OF THE WARM SECTOR BY AFTERNOON. AS A CAP WEAKENS DURING THE DAY...THUNDERSTORM DEVELOPMENT APPEARS POSSIBLE ALONG THE WARM FRONT AND FURTHER SOUTHEASTWARD ACROSS THE ARKLATEX NEAR THE ERN EDGE OF THE STRONGEST INSTABILITY. AN MCS WILL BE POSSIBLE ACROSS THE REGION LATE WEDNESDAY AFTERNOON WITH COLD-POOL ORGANIZATION ALSO POSSIBLE BY EVENING. NAM FORECAST SOUNDINGS FROM OKLAHOMA CITY SEWD TO NEAR THE RED RIVER AT 00Z/THU SHOW MLCAPE IN THE 2000 TO 2500 J/KG RANGE WITH 0-6 KM SHEAR OF 45 TO 50 KT. THIS WOULD SUPPORT SEVERE STORMS WITH LARGE HAIL AND WIND DAMAGE. THE MAIN QUESTION IS WHAT STORM MODE WILL DOMINANT. IF CELLS REMAIN DISCRETE...THEN SUPERCELLS WOULD BE THE MOST FAVORED STORM TYPE. HOWEVER...THE PATTERN WOULD SUGGEST COLD-POOL ORGANIZATION WHICH WOULD FAVOR A LINEAR STRUCTURED MCS WITH ENHANCED WIND DAMAGE POTENTIAL. EITHER WAY...SOME TORNADOES CAN BE EXPECTED WITH ROTATING CELLS ASSOCIATED WITH THE BETTER ORGANIZED STORM CLUSTERS. WILL ADD A 30 PERCENT SEVERE PROBABILITY FROM NEAR AND SOUTH OF OKC SEWD TO NEAR AND EAST OF DALLAS. FURTHER TO THE SOUTH ACROSS SE TX AND LA...FORECAST SOUNDINGS AT 21Z ON WEDNESDAY SHOW MODERATE INSTABILITY AND STRONG DEEP-LAYER SHEAR. DUE TO THIS ENVIRONMENT...CELLS THAT CAN INITIATE ALONG LOCALIZED CONVERGENCE ZONES COULD ROTATE AND POSE A THREAT FOR WIND DAMAGE AND HAIL. A SEVERE THREAT COULD ALSO DEVELOP DURING THE LATE EVENING OR IN THE OVERNIGHT PERIOD AS AN MCS APPROACHES THE REGION FROM THE NORTHWEST. ...ERN CO/SW KS/TX AND OK PANHANDLES... AN UPPER-LEVEL RIDGE IS FORECAST TO MOVE EWD ACROSS THE SRN ROCKIES WEDNESDAY AS SFC LOW PRESSURE DEEPENS ACROSS THE SRN HIGH PLAINS. UPSLOPE FLOW IS FORECAST FROM NEAR THE SFC LOW EXTENDING NWD ACROSS THE CNTRL HIGH PLAINS. THUNDERSTORM DEVELOPMENT MAY TAKE PLACE BY AFTERNOON ALONG A SFC TROUGH IN THE TX PANHANDLE AND IN ERN CO. FORECAST SOUNDINGS FOR LAMAR CO AND THE OK PANHANDLE AT 00Z/THU SHOW MLCAPE AROUND 1500 J/KG WITH 0-6 KM SHEAR NEAR 40 KT. THIS COMBINED WITH A RELATIVELY DRY BOUNDARY LAYER...SFC DEWPOINTS IN THE UPPER 40S F...WOULD SUPPORT MARGINALLY SEVERE STORMS WITH WIND DAMAGE AND HAIL POSSIBLE MAINLY DURING THE LATE AFTERNOON AND EARLY EVENING.

Severe Threat Thursday

...DISCUSSION... THE MEDIUM-RANGE MODELS INCLUDING THE ECMWF AND GFS SOLUTIONS BEGIN THE 4 DAY 8 DAY PERIOD WITH AN UPPER-LEVEL RIDGE OVER THE SRN PLAINS EXTENDING NNWWD INTO THE CNTRL HIGH PLAINS. THE MODELS MOVE THIS FEATURE EWD ON THURSDAY/DAY 4 ACROSS A WARM SECTOR OVER THE ERN TWO-THIRDS OF TX...SRN OK AND LA. ISOLATED TO SCATTERED THUNDERSTORM DEVELOPMENT WILL BE POSSIBLE ACROSS THE WARM SECTOR WHERE MODERATE INSTABILITY AND STRONG DEEP-LAYER SHEAR SHOULD MAKE CONDITIONS FAVORABLE FOR SEVERE STORMS. AN ENHANCED THREAT FOR WIND DAMAGE AND LARGE HAIL COULD DEVELOP ACROSS THE REGION THURSDAY AFTERNOON AND EVENING WHERE A SLIGHT RISK HAS BEEN ADDED. MODEL SOLUTIONS DIVERGE SHARPLY ON FRIDAY/DAY 5 WITH THE ECMWF MOVING AN NEGATIVELY TILTED UPPER-LEVEL LOW INTO THE CNTRL HIGH PLAINS WHILE THE GFS MOVES A POSITIVELY TILTED UPPER-LEVEL TROUGH OVER THE SRN HIGH PLAINS AND CNTRL PLAINS. THE ECMWF SOLUTION WOULD BE FAVORABLE FOR SEVERE STORMS IN THE SRN AND CNTRL PLAINS WHILE THE FASTER GFS SOLUTION WOULD BE FAVORABLE FOR SEVERE STORMS OVER THE LOWER TO MID MS VALLEY. AT THIS POINT...AM LEANING TOWARD THE SLOWER ECMWF SOLUTION WHICH WOULD MEAN A POSSIBILITY FOR AN ENHANCED SEVERE THREAT IN FROM NORTH TX NWD INTO SRN KS. LARGE HAIL...WIND DAMAGE AND TORNADOES WOULD BE POSSIBLE FRIDAY AFTERNOON AND EVENING IN THE SRN PLAINS. THE POTENTIAL EXISTS FOR AN OUTBREAK OF SEVERE STORMS IF THE ECMWF SOLUTION VERIFIES. AT THIS POINT...THE LARGE SPREAD IN MODEL SOLUTIONS IS TOO GREAT TO ADD AN ENHANCED SEVERE THREAT FOR FRIDAY. ON SATURDAY/DAY 6...THE MODELS MOVE THE SYSTEM QUICKLY EWD ACROSS THE MS VALLEY WITH A ZONAL FLOW PATTERN DEVELOPING IN THE GULF COAST STATES. THIS PATTERN WOULD MAKE THUNDERSTORM DEVELOPMENT POSSIBLE IN THE GULF COAST STATES WITH A SEVERE THREAT POSSIBLE THERE DURING THE AFTERNOON. EVEN SO...PREDICTABILITY REMAINS QUITE LOW LATE IN THE DAY 4 TO 8 PERIOD.

Precipitation Outlook
According to NOAA's HPC, the 5 day precipitation forecast suggests pockets of heavy moisture across parts of the Northeast, South-central and Western U.S. Keep in mind that some folks in the South-central U.S. have already had a ton of moisture so far this month, so any additional heavy moisture could lead to flooding!

Top April Rainfall Reports
As of April 19th, these were some of the top rainfall reports so far this month! Note that 3 of these locations are in Kentucky!


Interestingly, some locations in Kentucky are in the top 5 wettest April's in recorded history as we still have about another week and a half left!


"The Earth Has an Eerie Hum and Now We Know What's Causing It"
"Scientists have long known that Earth produces an eerie low-frequency hum that's inaudible to humans but detectable with seismic instruments. But as for what's causing this "microseismic" activity, scientists have never been sure."
"Until now."
"A new study published online Feb. 10, 2015 in the journal Geophysical Research Letters indicates that the hum is largely due to ocean waves that cause our planet to vibrate subtly -- or "ring," as the researchers put it."

See more from HuffingtonPost.com HERE:


"The Greatest Natural Disaster That Almost Was"
More advanced warnings of incoming weather systems sound like a great idea, but researchers are learning that people don’t always do what’s expected.
The National Oceanic and Atmospheric Administration’s Severe Storms Laboratory is developing a system, called Warn-on-Forecast, that could one day provide tornado warnings an hour or more before a twister hits, more than quadrupling the current 14 minutes of warning time (SN: 5/2/15, p. 20). Forecasters, however, worry about how people will spend that extra time, says Kim Klockow, a meteorologist and behavioral scientist at University Corporation for Atmospheric Research who is based in Silver Spring, Md.
Historical storms suggest that people can make the wrong call, she says. On May 31, 2013, a monster 4.2-kilometer-wide twister touched down outside Oklahoma City. Just 11 days before, a tornado ravaged nearby Moore, Okla., damaging as many as 13,000 homes and killing 24 people. With that disaster fresh on people’s minds (plus a few local weather reports urging people without basements to head south), thousands jumped into their cars and drove instead of taking shelter. The highways quickly became a congested, chaotic mess. Cars headed south on northbound lanes and gridlock extended more than 40 kilometers out of the city. “They just left their houses and headed south,” Klockow says.
Things soon got worse...

Read more from ScienceNews.org HERE:

(Image courtesy: DANIEL RODRIGUEZ/FLICKR)


Thanks for checking in and have a great rest of your week! Don't forget to follow me on Twitter @TNelsonWX

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