Ofallon Weather

First of all, Happy New Year to all! I am still in Disney, but should be home in 24 hours! The high here was 78 today! :)

I will be a day or two late adding the monthly/year summaries. We will have to get settled in after leaving our home the day after Christmas at 5 a.m.

I did read that this was the wettest two years in a row ever recorded, it appears the O’Fallon station recorded ~112 inches of precipitation the last two years. The St. Peters station was added this year, so I will summarize a partial year on that side of the site.

Happy New Year again, and please be careful in the cold!

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It appears to be snowing in the St. Louis area. I checked some of the MODOT webcams and they show the highways a bit covered.

We are in Disneyworld for the week, I choose not to turn my heater on in the rain gauge, so we will have to wait until the temperatures get above freezing to see how much liquid is in the snow.

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Okay, once again the computer models of this storm are changing. They are now starting to bring the storm further east before it goes northwest. This could be a good situation for our area to receive snow Christmas morning.  If this happens we could see 2-4 inches of snow. :twisted:

Stay tuned, I will try to update when I wake up in the morning! :)

Blog should be linked to Twitter and Facebook shortly!

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Well it is looking more like the upcoming storm is going to slide north and west of us.

The models will get “good” data from this storm as it arrives over land in the next 24 hrs. More than likely we are going to get 1.5-3 inches of rain then to top it off maybe a dusting to 1 inch of snow.

If you are traveling, especially to the north and west of the St. Louis area this week, please plan ahead, and keep a close eye on the weather.

If I don’t get a chance to update this week, Merry Christmas and Happy New Year!

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Well it seems we have a chance for a white Christmas! We have two fast moving storms that may give us some small snow accumulations starting Friday. As with most Winter weather in our area, things change, we are usually on the edge of many systems with narrow snow bands. What has really interested me is the system for the middle of next week, for weathers sake, it is still way to far out. I have observed several models and most say we will get a decent amount of snow, temperatures should stay below normal. Stay tuned as things unfold over the next 5-7 days!

Here is another table provided by the St. Louis National Weather Service, this has archive data for Christmas weather in the St. Louis region.

St. Louis Christmas Day Weather Data

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Yes that was thunder you heard overnight. The storms made the most out of some weak instability over the region. This also included reports of hail, most were pea size, or .25 inches, I did see one report of 1 inch hail, or quarter size at Meramec State Park. Although not the ideal time of year for storms, the possibility is there each and every month for severe weather in our area. I keep my weather radio plugged in year round just in case. About the hail size, I though I would post a list of sizes and descriptions from the National Weather Service. This helps relate what you are seeing to the actual size, since most of us tend to exaggerate a bit. :) Oh and I almost forgot, as taught in Storm Spotter training, never describe hail as marble size, think about it for a minute, yes we have all seen way to many sized marbles! :)

Hail Chart, from the NWS.

I also cleaned some code up on the current weather and history pages. It seems my programs were not properly inserting the degree symbol ” ° ” into the pages as they were built. I made them static on all pages now. I am far from an expert, but all I have done has been self taught.

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I really thought I was ready for the cold season, I was wrong! I knew this cold/wind was coming, but I am ready for spring already!

Here is a summary of the O’Fallon and St. Peters stations for this winter storm event.

O”Fallon: 42 mph peak gust, average for December 9 was 14.1 mph.

St. Peters: 27 mph peak gust, average for December 9 was 5.7 mph. This station is situated in a bit of a low spot as well as being surrounded by many very mature trees. The O’Fallon station is a bit higher and only has surrounding houses to slow the winds.

Both stations recorded over .6 inches of precipitation, and traces of snowfall.

Here is a graph of the barometric pressure for this storm.

December 9 Barometer Graph, O'Fallon, MO 63366

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Well hopes of a big snowfall appear to be going north this time. The storm currently appears a bit further south than anticipated, but the models still take it north of the St. Louis area. This means little to no snow for us, but if you go 100 miles north you will likely find more snow than you want.

The storm will still give us a winter shot of cold air and strong winds. It looks to be down into the mid teens Thursday morning. The winds Wednesday could gust up to 40 mph. Wind chills will likley dip below zero Wednesday into Thursday morning.

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I have November summaries uploaded for both sites along with the links created in the archive pages. November was a warm month for the St. Louis area. It was the 10th warmest November, 6.5 degrees above normal. Rain was slightly below normal, which was good so we could dry out a bit from October. The Fall season overall (Sept-Nov) was just slightly warmer than normal 1/2 degree high on the mean temperature. This was lifted by the low temperatures running a bit high, overall high temperatures were .6 degrees below normal. Looks like we missed out on our snow, :( , I did receive a dusting here in O’Fallon, I was in Chesterfield during the event and the vehicles had nothing but water on them.

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