Yuba City, California

We’re going to head to northern California for our forecast tonight. There hasn’t been as in the news this summer out of California, which is pretty great, but the Yuba City area has been on my mind lately. With the now record breaking wildfires that devastated Lahaina, Hawai’i, I compare the devastation to Paradise, California, which seemed so dreadful at the time. It certainly was, but to think the devastation on Maui is worse boggles the mind.

At 953PM, ET, Yuba City was reporting clear skies with a temperature of 84 degrees. High pressure was in charge, with a few clouds seen over the high Sierras, remnants of afternoon convection. Heat advisories are in place for much of the region.
Don’t expect substantial changes with high pressure remaining in place. Hopefully the diurnal convection in the high Sierras feels left out and give Yuba City a bit of shade. Otherwise, there might be an isolated storm in rest of the Valley, but I suspect clouds will be the main impact.
Tomorrow – Hot with partly cloudy skies. High 100, Low 73
Tuesday – Fewer clouds, so warmer temperatures, High 106, Low 73

TWC: Tomorrow – Cloudy. High 98, Low 72
Tuesday – Plentiful sunshine. Hot. High 106, Low 70

AW: Tomorrow – Warm with partial sunshine; extreme heat can be dangerous for outdoor activitie High 99, Low 69
Tuesday – Partly sunny and hot; danger of dehydration and heatstroke if outside for extended periods of time High 107, Low 67

NWS: Tomorrow – Mostly sunny and hot, High 99, Low 72
Tuesday – Sunny and hot, High 104, Low 73

WB: Tomorrow – Mostly sunny in the morning then becoming partly cloudy, High 97, Low 71
Tuesday – Sunny, High 105, Low 69

WN: Tomorrow – Partly cloudy, High 99, Low 72
Tuesday – Partly cloudy, High 104, Low 73

CLI: Tomorrow – Mostly cloudy, High 99, Low 70
Tuesday – Sunny, High 105, Low 69

Not a lot on satellite tonight, but it is night that the plumes on satellite are clouds this summer, and not smoke.

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Persistence in Florida

One method of forecasting that we have is called “persistence forecasting” which basically using the weather that is seen on one day, and carrying that forward in your forecast. It can work in Florida, especially with what we have see in places like Orlando late in the summer. It’s hot and humid, temperatures generally float at about the same levels, there is usually a stray storm in the area, and you hope to avoid tropical intrigue. That’s how it went for our forecast towards the beginning of the month, though it was a hair cooler than it was when we created the forecast on the 3rd. Accuweather came through with their best performance in a while, and earned victory for the day.
Actuals: August 4th, .27 inches of rain in thunderstorms, High 92, Low 76
August 5th, .03 inches of rain in thunderstorms, High 95, Low 79

Grade: A-C

A positive August trend

I’m going to be verifying the forecast for Orlando later today, and while I know that the weather today is similar to what it was when we issued the forecast earlier this week, there is another similarity that is ongoing. It’s the middle of August, but we aren’t looking at any imminent tropical features in the North Atlantic.

With the forecast for hurricanes continuing to be above average, this could certainly change on a dime. The hurricane driven winds that exacerbated the wildfires in Maui, are a reminder that the North Atlantic is not the only place threatened by tropical storms.

June/July Forecasters of the Month

We’re marching on through summer, and after failing to mention the top outlets last month, we get a twofer here in August. Weatherbug was the top outlet back in June, a notion belied by their position near the bottom of the Forecast Wins chart. Still, that’s the chart for the year, and one strong set of forecasts can earn you the month, like it did for Weatherbug in June.

With more work done in July, we were able to see an outlet with a stronger win total actually claim the title for the month. In the first month of the second half of the year, the title was claimed by those stalwarts at The Weather Channel. They also scooched on up the Forecast Wins total, but they moved in to 2nd place, which is more impressive than Weatherbug’s second to the bottom.

Congratulations to both of our winners, and to you, for having so many good weather providing options these days.

OutletForecast Wins (year)
Victoria-Weather5.33
The Weather Channel3.33
Clime2.83
National Weather Service2.5
WeatherNation2.5
Weatherbug2
Accuweather0.5

Stormy days ahead

It’s been since the spring, but the SPC has actually started using the Days 4-8 outlook imagery, at least days 4-5, with a mass of potential storms moving through the Ohio Valley to the mid-Atlantic. For now, it is something of a curiosity, but with this much certainty this far out, it seems fairly likely that the outlooks will be upgraded as we get closest to Sunday and Monday.

Norwegian nonsense

Norway is a very important country in the history of meteorological research. Vilhelm Bjerknes formed the Bergen School of meteorology, which produced meteorologists like his son Jakob and Carl Rossby, as well as the Norwegian Cyclone model, which is one of the first basic understandings of how low pressure systems work, with warm and cold fronts, which reach occlusion and deteriorate. For all that meteorological history and prowess, the country is sure upside down today.

Via Accuweather

I highlighted a few places, namely the two warm spots and the coolest spot. Tromso and Bodo are both north of the Arctic Circle. Drammen is in the southern part of Norway, southwest of Oslo. (Bergen, the city of meteorological record, is also chilly and in the southern part of the country.) The cities are the same distance apart as New York and Orlando, so this is particularly unusual. When you look at the radar and see most of the North Sea socked in with rain, it starts to make more sense, and when you realize the Arctic is still seeing full daylight for 20 hours a day, it all clicks.

Here we go

Today is setting up to be an adventurous weather day. As you can see by the graphic on the upper right corner of the page, the SPC has a moderate risk for severe weather in the Appalachians and mid-Atlantic, with a tornado watch already set up for the western face of the range, including much of the upper Ohio Valley. Storms there are just emerging, with the first severe warnings near Parkersburg, West Virginia, and more certainly to follow.

An existing line of thunderstorms is also racing eastward, east of Memphis, and has a history of producing 65mph winds.

If all that wasn’t enough, the SPC also has a mesoscale discussion out for eastern Washington and northern Idaho. I can’t imagine we will remember the weather there like we may remember the weather furth east as the day goes on.