Archive for February, 2009

Snow Ends, Cold Begins
February 28, 2009

The snow is ending across Arkansas this evening. Here is the Super Doppler radar image from 9:05 PM.

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Now with a snow pack on the ground and clear skies overnight temperatures will drop very quickly. Lows overnight are expected to drop into the low to mid teens in northwest Arkansas where there is snow on the ground. In the river valley and areas further to the south temperatures will fall to the low 20s overnight.

Ross Ellet

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Snow Totals So Far
February 28, 2009

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We have had reports in northern Franklin County from 1/2″ to 3/4″. Berryville right now tops the list with 1.5″ of snowfall.

Ross Ellet

7:00 P.M. Snow Update…Winter Weather Advisory
February 28, 2009

tsa

Snow continues to fall across northwest Arkansas this evening; a winter weather advisory has been issued in anticipation of road issues.  The counties in purple are in the current advisory that’s out until 3 a.m. 

Portions of Benton, Washington, and Carroll counties have already picked up over an inch of snow.  I had a report in Berryville of 1.5″ of snow so far today!

southmissvly

An additional inch of snow is possible through 10 p.m. tonight across northwest Arkansas.  Use caution on the roads, especially over bridges and overpasses.

The River Valley may pick up between a dusting to a quarter of an inch; however, no major accumulation are expected.

The snow should come to an end by 10 p.m.  Wind chills overnight will feel like the single digits, so check on the outdoor pets and animals.

Drew Michaels

Light Snow Continues
February 28, 2009

Light snow is expected through 7pm, with a few flurries possible after 7pm. Temperatures are in the middle 20s in northwest Arkansas. As a result roads are becoming slick and hazardous. The bridges and overpasses have some snow and ice in spots. Snow totals are expected to be between 0.5″ to 1.5″ in northwest Arkansas and up to a half of an inch for the rest of the viewing area.

Ross Ellet

Round #2 Moving In
February 28, 2009

Light snow is likely in northwest Arkansas later on this afternoon. The best chance for light snow will be from 2pm to 7pm. Additional snow accumulations of up to 1/2″ are possible by this evening. Here is the Super Doppler radar image as of 1:26 pm.

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Ross Ellet

Noon Saturday Snow Update..
February 28, 2009

It’s very cold outside with a stiff northwest wind.  Temperatures this afternoon will remain in the 30s with wind chills in the 20’s.   Please check on pets and outdoor animals. 

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The upper level low responsible for the light snow this morning is still positioned to our north, but it’s expected to move into our area this evening. 

More snow has developed on the backside of the low; this snow will like move south across northeastern Oklahoma and northwest Arkansas late this afternoon and evening.

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If this batch holds together, an additional dusting to an inch will be possible across northwest Arkansas.  Bridges and overpasses may become slick in spots; however, main roads as a whole shouldn’t be an issue.  The River Valley may see some snow flurries with no accumulation expected.

Please remember to send in your photos to weather@4029tv.com

Drew Michaels

4:30 AM Saturday Snow Update
February 28, 2009

The snowflakes have been flying during the early morning hours on Saturday. Here is the Super Doppler radar image at 4:30am. A band of light snow is moving through northwest Arkansas during the morning. This will taper off by late morning today.

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Here is the expected timeline. Light snow or flurries are expected through 7am. Here is the RUC accumulated precipitation from 6-7am.

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By late morning a few flurries are possible before the precipitation moves to the east closer to noon today. Here is the RUC accumulated precipitation from 8-9am.

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Ross Ellet

11:00 p.m. Updated Snow Forecast…
February 27, 2009

uppermissvly

Looking at the radar echoes to our north, we may see a better chance for snow for Saturday morning.  The hardest part in this forecast is the placement of the upper level low. 

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The models are pushing this low a little further east; however, please keep in mind, these cut-off lows are very hard to forecast, so if the placement of the low is a little more west, accumulating snow will be possible!

The roads should be ok in this event, but the grassy surfaces may see some accumulation.  Northwest Arkansas has a chance to pick up between a dusting to an inch of snow.  The highest totals would be across the upper elevations. 

The River Valley will also carry a chance for light snow, but no accumulation is expected.  Regardless, we’re expecting a blustery and cold afternoon, so bundle up!

Drew Michaels

Snow Flurries & Cold
February 27, 2009

An upper level low is diving to the south and will move right overhead by tomorrow late morning. This will provide a lot of cold air, an increase in clouds and a chance for some scattered snow flurries Saturday morning. Here is the surface map for tomorrow morning.

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Here is the surface map by afternoon.

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There is a 40% chance for snow flurries in northwest Arkansas and a 20% chance for snow flurries in the river valley. No snow accumulations are expected since the snow amounts will be very light, the ground is very warm, and air temperatures will remain above freezing. Temperatures will fall into the low to mid 20s by Sunday morning with partial clearing.

Ross Ellet

Storm Chase Recap
February 27, 2009

I started the day over in Spiro hoping for something to pop during the afternoon since we had more sun than expected.  The cap was just too strong even with the extra sun so around 330pm I went home to wait on the storms to pop later.  As the storms began to pop up in NE OK/NW AR I made my way to Chester where I waited on the storms to come to me.  I got a few lightning shots here:

Chester I540 Lightning
Chester I540 Lightning

Before the storms got to me I had to head back south as the northern part of the line had weakened a bit.  The storms to the west of Fort Smith began to have some good supercellular characteristics so I decided to target south of Fort Smith.   I was able to get around the storm at Witcherville and stopped there.  The lightning really picked up at this time and radar showed the storm strengthening.  Drew already posted one of the better lightning pictures below.   Here is another:

Witcherville Severe Storm
Witcherville Severe Storm

The picture above shows the lightning and the white streaks around that is hail and rain. Golf Ball size hail was reported near Enterprise with this storm at this time.

Witcherville Severe Storm
Witcherville Severe Storm

If you look closely at the above picture you can see the wall cloud at the bottom middle.  Also, barely noticeable is the large meso above the wall cloud that takes up much of the picture (the right/northeast edge of it is just to the left of the right side of the picture)

After a few more minutes the wall cloud came into better view.

Witcherville Severe Storm
Witcherville Wall Cloud

By this point I was inside the notch / hook feature.  I didn’t leave till I was right up next to the wall cloud and by that point I was 3/4 surrounded by the storm.  I only made it south a few hundred yards before I was slammed with strong RFD (rear flank downdraft).  Winds of 60-65 mph limited visibility to just a few feet and penny size hail began to rain down.  I exited out of the rfd for a few minutes but entered again as I headed south from Mansfield on that several mile long east/west stretch of Hwy 71.  Around this time my winds which had been strong (45mph) out of the North/Northwest immediately shifted to Southeast winds (30mph).  I continued south on 71 and eventually made my way over to near Booneville to take a few pics of the still severe warned departing storms.

Departing Severe Storms
Departing Severe Storms

A few more pics are viewable on my website = HERE.

Post by Brian Emfinger