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Jan
14

Flurries For Some This Evening. Freezing Fog To Follow?

Posted By · January 14, 2015 at 2:44 pm

We’ve endured our coldest morning of the next week… but it was a bitter start for sure.  Areas north of I-74 in the deeper snow pack began well below zero, with Kokomo the coldest spot at -8.  The clear sky, calm wind, and Arctic air provided the ingredients for a blanket of hoar frost.  This phenomenon is when vapor instantaneously crystallizes to objects that are often times colder than the frost point.

LOWS THIS MORNING WEATHER PICS 2 WEATHER PICS

Viewers in Grant and Miami counties provided the picture proof of the spectacular show put on by nature this morning.  That snow pack up north kept many cities in the low teens and upper single digits for “highs” this afternoon.  Clouds increase from the west and there’s just enough energy to squeeze out some flurries and passing light snow showers… mainly north of Indy though.

SATRAD PLANNER EVENING

Though lows won’t be as cold tonight, it’s still certainly frigid by any standards.  Single digits up north contrasted by lows closer to 20 down south.  There may be enough to wind to prevent fog from forming again tonight.  But areas that clear will be susceptible for freezing fog by sunrise Thursday.

LOWS TONIGHT HIGHS THURSDAY

After some early morning low clouds we should finish the day with a bright sky tomorrow.  Highs make a run at freezing in Indy and possibly near 40 degrees for southern viewers.  A good 15 degrees colder up north, but chipping away at the snow pack for sure.

PLANNER THURSDAY LOWS SATURDAY

The overall pattern remains quiet the rest of the week and we’re still anticipating highs in the 40s Saturday despite a good deal of cloudiness.

Breezy conditions accompany the “warm up” to begin the weekend.  A system moving across the Great Lakes drags in a cold front Saturday  night that will drop highs back into the 30s Sunday.  Along with the cold there’s a possibility of seeing some flurries and/or snow showers to finish the weekend.  Stay warm and check back for updates – Sean Ash

HIGHS SATURDAY 7DAY

We’re also closely monitoring the forecast in Foxbor for Sunday’s AFC Championship Game.  Our early call is a wet one for the game as low pressure intensifies off the coast.  Admittedly there are some timing uncertainties on when the heavies rain may come onshore.  We’ll update in the days ahead.  GO COLTS!

PLANNER COLTS

 

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Jan
13

From Frigid to 40s

Posted By · January 13, 2015 at 4:39 pm
It will be another frigid night across central Indiana.  Low temperatures will be in the range of near 0 north to about 10 degrees south.  This arctic chill will last through Wednesday with highs in the upper teens and lower 20s.  These numbers are closer to the average low for the middle of January.
LOWS PLANNER HIGHS

We are tracking a gradual warming trend and a dry weather pattern through the start of the weekend.  Highs will be near 30 on Thursday and in the upper 30s and lower 40s on Friday.  Saturday will be in the 40s, with sunshine.

There is a change on the way for the end of the weekend, as a weak weather system brings increasing clouds Saturday night and Sunday.  There will also be the chance for a few sprinkles or flurries.  Highs fall back into the 30s for Sunday and Monday.

7DAY

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Jan
12

Frigid Through Wednesday

Posted By · January 12, 2015 at 4:22 pm
The weather pattern is quieter now and will stay that way over the next several days.  There are still a couple of weather concerns through mid-week.  Those concerns center around the cold.  We are forecasting low temperatures in the range of 7-12 Tuesday morning and in the single digits Wednesday morning.  This bitter cold will lead to slick roads.  The Tuesday and Wednesday morning commutes may still be a bit tricky.
LOWS PLANNER HIGHS

There will be a mix of clouds and sun on Tuesday and mostly sunny skies on Wednesday.  The sunshine won’t help the temperatures, as highs are only forecast in the teens through mid-week.

There is some good news, we are forecasting a dry weather pattern through the weekend and a gradual warming trend.  Highs will be near 30 on Thursday and 35-40 degrees on Friday.  This milder temperature trend will last through the weekend, with highs in the 40s on Saturday.
7DAY
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Jan
12

Temperatures Drop & Slick Conditions Will Remain Likely

Posted By · January 12, 2015 at 10:24 am

The bulk of the rain, snow, and freezing rain has pushed out of Central Indiana, now we focus on roads and sidewalks to re-freeze, and a warm up just in time for the weekend!

The Winter Weather Advisory remains in effect until 1pm this afternoon.

monday winter weather

Temperatures will continue to fall into the mid 20s by this afternoon with a north breeze up to 20mph.

monday today

Wind chills will feel more like the teens in many locations.  Any water on roadways or sidewalks will re-freeze, and this especially becomes the case as we go into tonight.

Just a few totals of freezing rain from this system are .30″ in Anderson, .25″ in New Castle, .25″ of ice in Tipton, and .20″ in Lafayette.  As the air cooled light snow covered these locations this morning too.

Tonight we fall into the single digits across most of Central Indiana.  This will be a frigid and icy, slick start Tuesday morning.  Subzero wind chills are likely, and we stay frigid for the next couple of days.

monday tonight

A warm up is right around the corner, check out the weekend in the 7 day forecast.  A beautiful weekend is ahead!

monday 7 day

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Jan
12

Update On Ice And Morning Commute Conditions

Posted By · January 12, 2015 at 1:23 am

The challenging forecast continues this hour with 1 to 2 degrees separating wet roads from a skating rink.  Thankfully many interstates around the Indianapolis metro area are mainly wet with some slush.  Side street and neighborhoods get more icy and this is especially true heading north and and east out of Indianapolis.  The picture below from Monticello shows snowy covered roadways in area that will see more snow and sleet than freezing rain.

VIEWER PICTURE TEMPS

Based on latest radar and surface temperature trends it appears the highest ice accumulation will be just north of Indianapolis.  But areas shaded in pink can expect quarter-inch or more ice accumulations and possibly some power outages embedded within this zone.  Ice accumulations drop off along and south of I-70 where it’s just warm enough to prevent more significant amounts.

ACCUM

Temperatures hover around the freezing mark much of the early morning from Indy-southward.  This keeps roads mainly wet to slushy in spots.  Colder temperatures occur in the northwestern viewing area with icier conditions are expected from Crawfordsville, Lafayette, Kokomo, Monticello.  This is also where the transition to snow begins to occur and eventually moves southeastward into the Indy metro area by sunrise.

HEADLINES RPM 3AM MONDAY RPM 6AM MONDAY

Definitely allow extra time for the morning commute regardless of your location, and be aware that road conditions can change dramatically based on location.  We’ll need to monitor temperatures and precipitation closely in the morning… as a coating (to 1-2″ north of I-74) is likely.

RPM 9AM MONDAY RPM 4PM MONDAY PLANNER MORNING

Temperatures continue to fall during the Monday and eventually finish in the mid-20s by 5pm.  Another leftover moisture on the roads will begin to refreeze.  Roads may be considerably worse area wide Tuesday morning with lows nearing the single digits.  This marks a shift back to frigid conditions for a few days before we eye a decent warm up heading into next weekend.

PLANNER TUESDAY PLANNER AFTERNOON 7DAY

Stay tuned for updates this morning and don’t forget WTHR Sunrise begins at 4am with team coverage – Sean Ash

 

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Jan
11

Ice Storm Warning Update

Posted By · January 11, 2015 at 8:02 pm

Central Indiana is in the midst of an ice storm and we expect several more hours of steady, at times heavy, precipitation between now and 3am.  We’ve had many reports of icy roads… especially across Hamilton, Madison, Tipton, Clinton and Randolph counties.  This will only continue to grow as temperatures drop to around 30 degrees and hover there much of the night.

At the time of posting, Orange (essential travel only) advisories had been issued for Hamilton, Tipton and Randolph counties.  We’ve also heard power outages across Central Indiana… those will likely grow as well overnight.

VIEWER PICS PLAINFIELD

At the time of posting, Orange (essential travel only) advisories had been issued for Hamilton, Tipton and Randolph counties.  We’ve also heard power outages across Central Indiana… those will likely grow as well overnight.

road conditions HEADLINES

Quarter-inch ice accumulations are likely along the I-70/74 corridors and locally higher amounts are possible.  Slick travel can be expected into the Monday morning commute and power outages may continue to grow into Monday afternoon as the wind increasing.

730PM TEMPS

ACCUM

RPM 12AM MONDAY RPM 4AM MONDAY RPM 7AM MONDAY

It also appears a transition to mostly snow occurs Monday morning to drop an inch of accumulation over top of the ice.  Not an ideal set up.  A long way to friends.  Please send any picture and road conditions to pix@wthr.com.

RPM 4PM MONDAY

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Jan
11

Icy Night Ahead Comes With Challenging Forecast

Posted By · January 11, 2015 at 3:44 pm

With precipitation type and specific ice and snow accumulations hinging on 1 to 2 degrees, this will be our most challenging forecast by a landslide this season.  Our viewing area will see everything from just cold rain (primarily southern sections), to sleet and freezing rain, to mainly snow and sleet for some.

TEMPS DEWPOINTS RPM 6PM SUNDAY

Please know the set up in place will require a significant amount of NOWcasting due to what small temperature changes can do to precipitation type.  This is a highly bustable forecast in my humble opinion, and I’m not afraid to admit that.

RPM 9PM SUNDAY RPM 12AM MONDAY RPM 4AM MONDAY RPM 7AM MONDAY

With that disclaimer out there here is my latest thinking based on current analysis and model guidance.  Though temperatures have “warmed” into the lower 30s, dry air (dewpoints in the mid-teens) will cause evaporative cooling as precipitation intensifies this evening.  The result will be for temperatures to drop below freezing along and north of the I-70/74 corridors.  This region has the highest probability of significant icing of a .25″ and perhaps locally higher amounts.

ICE ACCUM

Areas in southern Indiana may only get a glancing blow of freezing rain of less than a .10″ accumulation.  A colder atmosphere from top to bottom on the northern periphery of the viewing area suggest a better chance of snow/sleet accumulations.

HEADLINES HEADLINES 2

Travel may become difficult after sunset and roads may get icy… especially bridges and overpasses.  While power outages are certainly possible, I don’t envision widespread/massive outages at the moment.  But stronger winds Monday afternoon ups the ante for that to occur with any ice remaining power lines.

PLANNER TONIGHT PLANNER MONDAY

After Monday morning we’ll be precipitation-free for the upcoming week.  But the week begins on a bitterly cold note with multiple mornings in the single digits, if not sub-zero Wednesday morning.  All long range guidance suggests a January thaw heading into next weekend with perhaps several days with highs in the 40s.  Stay tuned and check back for updates this evening – Sean Ash

7DAY

 

 

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Jan
11

Ice Storm Warning in Effect this Afternoon

Posted By · January 11, 2015 at 6:51 am

An Ice Storm Warning has been issued for Indianapolis and areas along the I-70 corridor from 4pm this afternoon until 7am Monday. Then a Winter Weather Advisory takes effect until 1pm Monday. The rest of central Indiana is under a Winter Weather advisory this afternoon until 1pm Monday.

ICE STORM WARNING
Freezing rain is likely this afternoon with ice accumulations from a tenth of an inch to a quarter of an inch.

ICE SNOW ACCUM

The precipitation will mix with sleet, snow and rain at times. Temperatures will hover near the freezing mark, allowing the precipitation to freeze onto surfaces at or below freezing.  Driving conditions will diminish rapidly this evening.  If you are heading to a Colts viewing party, use extreme care.

SUNDAY 2PM SUNDAY 8PM SUNDAY 7PM  SUNDAY 10PM

The bulk of the moisture will arrive late afternoon and will start to taper off after midnight. A cold front will arrive overnight, allowing colder air to push in. This will change any leftover precipitation to just snow. Light snow accumulation will be possible by late Monday morning.

MONDAY 1AM MONDAY 1PM

The Monday morning commute will also be hazardous, as snow falls on icy surfaces.   Temperatures will fall on Monday into the mid 20s by late afternoon.

MONDAY FORECAST

A quiet and dry pattern takes over on Tuesday with temperatures climbing to near normal by the weekend.

7DAY

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