Cold Weather Stimuli
By Paul Douglas
"A lot of people
like snow. I find it to be an unnecessary freezing or water" joked
comedian Carl Reiner. Love it or hate it winter brings out the best in
us.
Think about it. If every day was 80 degrees and sunny would we
ever get anything done? Weather extremes over the millennia have forced
civilizations to innovate - to tinker and engineer - trying to make us
as weather-proof as possible. From stricter building codes and resilient
building materials to warmer apparel and new transportation options. We
bad-mouth "bad weather" but it's a powerful incentive and a force for
good since the first caveman complained about the wind chill long ago.
A
few tentative jabs of chilly air are on the way but nothing I'd
characterize as arctic or unusual. The pattern continues to favor bitter
air pouring into New England, spinning up nor'easters that will buffet
big cities from D.C. to Boston. But a stubborn ridge of high pressure
straddles the central USA into mid-November. A mild bias should linger
close to home for the next 2 weeks; I envision a few more days above
60F. Winter is coming, but reluctantly it seems.
Remember, all that annoying cold and snow brings out our inner inventors.
===========
SUNDAY NIGHT: Slight chance of showers overnight. Low: 49
MONDAY: Peeks of sun. Stray shower early. High: 62. Winds: WNW 10-15
MONDAY NIGHT: A few more showers. Low: 41
TUESDAY: Mostly cloudy and cooler, feels like October. High: 49
WEDNESDAY: Partly sunny and brisk. Wake-up: 34. High: 49
THURSDAY: Mostly cloudy, feels like November. Wake-up: 37. High: 52
HALLOWEEN: Clear, cool and dry for Walking Dead Reunion. Wake-up: 32. High: 45
SATURDAY: Hard freeze. Bright sun and breezy. Wake-up: 28. High: 47
SUNDAY: Partly sunny, near normal. Wake-up: 35. High: 50
==============
This Day in Weather History
October 27th
1943:
Said to be one of the worst fogs in the Twin Cities in memory. A very
dense area of fog, with an average of 75 feet in thickness, blanketed
the area. At the worst, street lights could not be seen 25 yards away.
Drivers refused to cross unmarked railroad crossings and traffic was
brought to a standstill.
1931: Storm hits the Duluth area. Barometer falls to 29.02.
=================
Average High/Low for Minneapolis
October 27th
Average High: 53F (Record: 74 set in 1948 & 1922)
Average Low: 36F (Record: 13 set in 1997)
================
Sunrise/Sunset Times for Minneapolis
October 27th
Sunrise: 7:44am
Sunset: 6:08pm
================
Moon Phase for October 27th at Midnight
2.8 Days Before First Quarter
=================
Minneapolis Temperature Trend
Easing
into Fall... Fall weather this year has been has been incredible, no
question. Despite a decent cool down this week, we'll actually get back
to average weather for this time of the year. Extended weather models
suggest another warm up though during the early part of November. Not
sure how long we can keep this going... it's just a matter of time
before the other shoe drops. Stay tuned!
==============
Nature Notes by Freshwater Society
5th Week of October
"White-tailed
deer are in their mating season and the fresh scrapes and rubs of
rutting bucks can be spotted in the woods. Franklin's gulls and
ring-billed gulls follower farmers doing fall plowing to pick up worms
and other small animals in the soil. When the leaves have passed their
peak of brilliance and fallen from the trees, they turn into humus that
eventually will feed the parent tree as well as other plants. American
bittersweet, a native vine found throughout much of the state, has
clusters of bright red-orange seeds. The seeds hang on through winter or
until birds such as wild turkeys or eastern bluebirds eat them."
See more from Freshwater Society HERE:
Monday Weather Outlook
A
cold front sweeping through the area Sunday Night/Monday will keep
scattered light rain showers in place through Monday. Not much rain is
expected, but cooler temperatures through much of the week will be the
result of the passing cold front.
Temperatures
will begin to drop early this week. Our beautiful weekend weather gets
pushed southeast into the Ohio Valley as colder air begins to drop out
of Canada. Highs across northern Minnesota will only make it into the
50s, while highs in the southern part of the state will struggle to get
to 60.
Simulated Radar
Here's
the simulated radar through Tuesday, which shows rounds of showers and
storms rolling through the Upper Midwest. Some of the heaviest
precipitation looks to fall across northern Minnesota and Wisconsin.
Accumulated
rainfall through Tuesday looks heaviest across parts of northern
Minnesota and Wisconsin. Don't be surprised if some of this rainfall is
accompanied by a few rumbles of thunder.
National Weather Outlook
The
loop below shows active weather continuing in the western part of the
country. These storms continue eastward into our next of the woods and
the first of these impulses of energy will be moving through the Upper
Midwest early this week. Heavy rainfall will be possible where
thunderstorms develop and a little wintry mix will be possible on the
backside of the storm as colder air wraps in behind it. Note the
secondary storm system moving into the western U.S. - that storm will
actually bring much needed precipitation to more of California by next
weekend!
Isolated Severe Threat?
According
to NOAA's SPC, there is a MARGINAL severe threat Monday and Tuesday
east of the Mississippi Valley as the front sweeps east. If you think
the severe threat map looks a little different, it does! The Storm
Prediction Center implemented a new severe threat map earlier this
month.
"The October 22 changes expand the risk categories from
four to five. They also clarify the risk previously labeled as “See
Text,” which will be replaced by a line outlining the category and the
term “Marginal” to denote areas with a 5 percent probability of severe
weather."
To find out more about the change to the severe risk maps, see more from the Capital Weather Gang HERE:
Monday Severe Threat
...SRN
GREAT PLAINS TO UPPER MS VALLEY... MOISTURE RETURN AHEAD OF THE FRONT
WILL BE MODEST AND CONSIST OF A MODIFIED CP AIR MASS WITH MT AIR
CURRENTLY RELEGATED TO THE CARIBBEAN. ORIENTATION OF THE TROUGH AND
FRONT WILL FAVOR PREDOMINATELY SWLY FLOW WITH AN EML PLUME OVER THE WARM
SECTOR...LIKELY MAINTAINING SUBSTANTIAL INHIBITION FOR SURFACE-BASED
STORMS. OVER THE SRN GREAT PLAINS...WEAK MID-LEVEL HEIGHT FALLS IN
CONJUNCTION WITH LOW-LEVEL LIFT WITHIN THE FRONTAL ZONE SHOULD FOSTER AT
LEAST ISOLATED ELEVATED CONVECTION AFTER DARK. ALTHOUGH BUOYANCY SHOULD
REMAIN WEAK WITH MUCAPE AOB 1000 J/KG...STEEP MID-LEVEL LAPSE RATES AND
ROBUST SPEED SHEAR SHOULD FAVOR A RISK FOR MARGINALLY SEVERE HAIL.
ACROSS THE UPPER MS VALLEY...LARGE-SCALE ASCENT WILL BE PRONOUNCED AHEAD
OF THE AMPLIFYING TROUGH. THIS MAY BE SUFFICIENT TO OVERCOME INHIBITION
AND YIELD NEAR SURFACE-BASED CONVECTION ON THE NRN PERIPHERY OF THE
MODEST WARM SECTOR MOISTURE PLUME BY MON EVENING. INITIALLY STEEP
MID-LEVEL LAPSE RATES AND STRONG DEEP-LAYER SWLYS MAY SUPPORT MARGINALLY
SEVERE HAIL AND PERHAPS LOCALLY DAMAGING WINDS.
Tuesday Severe Threat
...LOWER
GREAT LAKES TO KY... DESPITE POLEWARD LOW-LEVEL MOISTURE ADVECTION
AHEAD OF THE FRONT...MEAN MIXING RATIOS SHOULD REMAIN MODEST AND IN
CONJUNCTION WITH PERVASIVE MOIST-ADIABATIC MID-LEVEL LAPSE
RATES...BUOYANCY WILL REMAIN MEAGER. NEVERTHELESS...WRF-BASED GUIDANCE
SUGGESTS TEMPERATURES SHOULD WARM INTO THE 70S DOWNSTREAM OF MORNING
FRONTAL CONVECTION. THIS STEEPENING OF LOW-LEVEL LAPSE RATES OCCURRING
AMIDST STRONG TO INTENSE MID/UPPER-LEVEL FLOW WOULD LIKELY YIELD STORMS
INTENSIFYING DURING THE AFTERNOON WITH A RISK FOR AT LEAST ISOLATED
DAMAGING WINDS. STILL...WITH THE MID-LEVEL TROUGH SHIFTING AWAY FROM THE
CONUS...ORIENTATION OF DEEP-LAYER FLOW WILL LARGELY PARALLEL THE FRONT
AND LOW-LEVEL WINDS SHOULD DIMINISH /ESPECIALLY WITH SWRN EXTENT/. THESE
FACTORS ALONG WITH THE ANTICIPATED SCANT BUOYANCY WILL PRECLUDE HIGHER
SEVERE PROBABILITIES THIS OUTLOOK.
Precipitation Outlook
According
to NOAA's HPC, the 5 day precipitation forecast keep most of the heavy
moisture this week across the Pacific Northwest. Interestingly, some of
this moisture will be from Ana, the same storm that impacted Hawaii last
weekend!
Tracking Ana
As
of early Sunday, Ana had weakened to a Post-Tropical Cyclone with
sustained winds of 58mph as it quickly moved northeast towards the
Pacific Northwest. Interestingly, this is the same storm that impacted
Hawaii last weekend!
Tracking Ana
As
of early Sunday, the Central Pacific Hurricane Center had the remnants
of Ana moving closer and closer to the Pacific Northwest through the
early week. It's not often than we see tropical systems this far north,
so it certainly is noteworthy!
Looking Ahead... Tuesday
Tuesday
looks like a fairly chilly day across the region. However, although
temperatures will be quite a bit cooler than what we've been dealing
with, we'll actually be closer to where we should be at this time of the
year. The image below shows the trough of low pressure swinging through
the Upper Midwest/Great Lakes by Tuesday. This will keep things a bit
unsettled and also drop temperatures.
Tuesday 850mb Temperatures
Note
how the 850mb temperature profile mimics that of the upper level 500mb
vorticity (spin) map above. The colder air will ride in on the backside
of the storm system through the end of the week/weekend ahead.
Tuesday Temperatures
Temperatures
will be quite a bit colder by midweek, but interestingly, we'll
actually be closer to average. Temperatures across the Plains in Rockies
will be slightly below average on Tuesday.
Halloween Outlook
Temperatures
on Halloween look to be a bit chilly as well. In fact, temperatures
will be nearly 5 to 10 degrees below average... Ghosts and goblins might
need an extra layer under their costume this year.
Halloween Outlook Cont.
Here's
a glance at temperatures by 8pm Friday (Halloween Night). Actual air
temperatures will be dropping into the 30s, while feels like
temperatures will be more like the 20s and lower 30s. Again, it looks
like many will need an extra layer heading out for tricks and treats.
Thanks for checking in and have a great week ahead! Don't forget to follow me on Twitter @TNelsonWX
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