Archive for January, 2010

THE SNOWSTORM IS OVER BUT TEMPERATURES REMAIN VERY CHILLY… WE WARM UP A BIT TOWARDS MID-WEEK… THE PATTERN STAYS ACTIVE THIS COMING WEEK WITH THE POTENTIAL FOR TWO SYSTEMS TO AFFECT THE HAMPTON ROADS REGION

Well, the snow is over but since the temperatures will be below freezing for most of the day on Sunday, only the areas that are in the sun will melt.  Roads, especially the secondary roads, will be treacherous for the most part throughout the day on Sunday. We did pick up additional snowfall last night as an upper-level disturbance moved through the area. Temperatures will slowly moderate this week but there is another system that may affect the region by mid-week.  This will most likely bring just rain to Hampton Roads, but the models are all over the place with this next system so stay tuned. Then, another more potent system may impact the area next weekend.  The pattern is definitely an active one… Monday is the first day of February and if you look at the averages, temperatures begin to slowly rise throughout the month. However, February can be a very cold and stormy month. Of course, the days get longer with each passing day as we move through February.

Leave a Comment

THE FIVE YEAR SNOW DROUGHT IS OVER FOR HAMPTON ROADS… SNOW/SLEET/FREEZING RAIN TAPERS OFF LATER SATURDAY FOLLOWED BY A VERY CHILLY SUNDAY

Well, as the headline states, the five year snow drought is over for Hampton Roads. (The last significant snowfall was on December 26th, 2004). Low pressure developing just off the southeast coast will slowly move northeastward off of the NC Coast. This low has been producing snow across the region since the pre-dawn hours. To our southeast over the Outer Banks, some sleet and freezing rain has been occuring. The snow will continue varying in intensity thoughout a good part of the day. Forecasters are closely watching the changeover line which is just to our southeast. If the slightly warmer air at higher levels of the atmosphere moves further north, a changeover will occur, which would in effect, hold down overall snow accumulations. Total accumulations will vary across Hampton Roads, but from the way it looks now, I would say that a foot is in reach in some of the “luckiest” places. Like I said, it all depends on that warm air aloft and whether sleet/freezing rain develops. And of course, freezing rain raises concerns it there is enough of an ice build up. Temperatures are not expected to go much above the freezing point through the weekend. So, officials recommend that you do not drive today, unless you absolutely have to. Just stay put today. With temperatures remaining below freezing on Sunday, road conditions on the secondary roads will still be quite treacherous. I expect the interstates to be passable tomorrow. Winds will also be increasing this morning as the low pressure area intensifies, which will casue some blowing snow conditions. Tides may run slightly above normal but forecasters don’t think that tidal flooding will be too much of an issue with this system. I’ll have an update on Sunday morning.

Leave a Comment

POTENTIAL EXISTS FOR A MAJOR WINTER STORM FOR HAMPTON ROADS… TEMPERATURES PLUNGE THIS WEEKEND

A low pressure system moving to our south over the weekend has the potential to produce significant snowfall here in Hampton Roads. As I’ve said many times before, we are long overdue for a significant snowfall. The last snowfall was on December 26th, 2004!!! The models agree in general that snow will begin to fall later Friday night and will continue through the day on Saturday. Now, it is possible that the snow may mix with sleet or rain at times. And it is also possible that a complete changeover could occur, but indications are right now that accumulations are possible and they might be quite significant. It takes just the right conditions to create snow in Hampton Roads. (See my weather fact on this subject).  Cold air will definitely be in place and the storm track seems to be perfect for creating a real chance of snow here in Hampton Roads. How far north will the snow get? It’s hard to say as some models do indicate a slightly more northerly track. Could the forecast bust? Yes, but as we get closer to the event, it seems more likely that the forecast will verify. Winds will be quite gusty as the pressure gradient increases on Saturday. So, please monitor the forecast from the NWS and the local media so you can be prepared for the winter storm.

Leave a Comment

MILDER AIR IS MOVING INTO HAMPTON ROADS… RAIN IS ALSO GOING TO MOVE IN BUT NOT UNTIL AFTER DARK… WINDS INCREASE AHEAD OF COLD FRONT SUNDAY EVENING

Southerly winds will bring in warmer air today (Sunday) and this should allow temperatures to exceed 60 degrees later today. The strengthening southerly winds are being caused by the pressure gradient between a slowly departing high pressure system and the approaching frontal system from the west. Rain is expected to break out tonight as the flow moistens out ahead of the cold front. At this point, the heaviest rainfall amounts are forecasted for areas west of Hampton Roads. However, we may pick up anywhere between 0.50 and 1.50 inches. Although thunder is a possibility, it doesn’t seem likely. The front should move through on Monday putting an end to the rain. Cold air behind the front is lagging so it would cool down that quickly on Monday. As a matter of fact, Monday afternoon may turn out quite balmy for January standards. On Tuesday we begin to cool down to more seasonal levels. The dry weather should last until Friday, when a system approaches the region from the southwest. This could actually turn out to be an interesting situation since there will be enough cold air around to support wintry precipitation in some of our northern and western areas. Since this is so far out in the future, forecasters are hesitant to make any specific predictions. So, right now, they’re going with rain for most of us next Saturday. By mid-week, the weekend forecast may have changed but stay tuned on this one. The forecast models are predicting that the pattern will most likely turn colder the week after this, but extended forecasts can be unreliable. Extended forecasts have improved over the years but they have a long way to go.

Leave a Comment

HIGH PRESSURE KEEPS US DRY AND ON THE COOL SIDE ON SATURDAY… AN APPROACHING FRONTAL SYSTEM BRINGS MILDER AIR IN ON SUNDAY AND SOME RAIN SUNDAY NIGHT

The low pressure area that moved through Hampton Roads last Thursday brought about 1.25 inches of rain to my backyard. The low is now well offshore and high pressure nosing down from the north will keep us dry on Saturday. With a NE to E wind off the water, temperatures on Saturday will be a bit chilly. As a frontal system approaches on Sunday, the southerly flow ahead of the system will bring up warmer air. Rain associated with this system should hold off until Sunday night. Thunder is possible in some spots, especially to our south. Rain ends on Monday…. The West has been hammered this week by multiple storm systems. There were mudslides, flooding, high winds, heavy snow, etc in many parts of the West. Numerous deaths and injuries were reported, mostly from flooding and vehicle accidents. The West gets a break but more wet weather lies ahead next week. I’ll have an update on Sunday morning.

Leave a Comment