STREAKY SNOW BAND TONIGHT...
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TUESDAY'S MID-DAY UPDATE:
A sneaky streaky clipper is aimed at the central parts of my area later tonight and very early Wednesday morning. The disturbance is a fast mover and shearing out as it passes. That means a weak system with limited moisture and only a short period of snow producing lift. The energy is also channeled meaning a very narrow band of snow up to 50 miles wide. The only thing the system has going for it is cold temperatures which means snow ratios will be high up around 15:1. That simply means a powdery snow that will fluff up nicely where it falls. It also means there will be some snow covered roads where the main band sets up.
With regards to the snow band, it still appears the axis of heavier snow is lining up from Fort Dodge to Cedar Rapids and on to the Quad Cities. Along and near that line totals of an inch can be expected with some locally higher totals in a few spots that could push 2 inches. I don't expect many amounts to reach the 2" mark (if any) but that is the high end range.
Notice too how my northern and southern counties see no snow at all. You are in or you are out with this streaky little system. Here's the latest model forecasts for snow which does not get going until well after midnight. It's out by 9:00 am in all areas.
The 3k NAM
The 12k NAM
All things considered this is a very minor system that will impact a relatively small area as it speeds southeast. More of a nuisance than anything else.
After this moves out models are really at odds with snow potential the next 10 days. Pure chaos for sure. The EURO has this for total snow out to the morning of December 20th.
The GFS shows this for the same period.
That's about as opposite as you can get. Most likely the EURO wins out but you never know. Even a blind dog finds a bone once in awhile! I'll see if I can get some better consistency in tonight's runs. Personally, i kind of doubt it. Models have been doing this sort of thing much of the past 2 weeks. They are really struggling with the pattern and that means a low confidence forecast until further notice. Roll weather...TS
WEATHER SCHOOL IS COMING TO TOWN...
GIVE SANTA A BREAK! Christmas is less than a month away. Are you looking for something special for that hard to buy for person? Maybe you just want to treat yourself for being on the nice list! Well, here's an idea that can "give" any weather enthusiast a lifetime of pleasure. It's called WEATHER SCHOOL. What a person experiences and learns here will open up the world of forecasting for years of enjoyment to come. Consider giving the gift of weather. Better hurry, only 9 desks still open. You can get all the details below.
TSwails.com is offering a very special and unique opportunity to learn first-hand the ins and outs of weather forecasting with one of the best meteorologists in the Midwest along with his team of expert meteorologists.
That’s right… You want to forecast right along with Terry Swails, well now you can. He’s teaching weather with TSwails newest program called WEATHER SCHOOL. The opening bell rings this January and you can be a member of the very first graduating class. The one-day forecasting seminar for weather enthusiasts will be held at his home in January. It’s not your typical run-of-the-mill school. There will be no tests, but Terry, Rebecca, and Nick will cram your head with so much knowledge, it’ll be spinning like a tornado before the day is over.
You want to know the essential online sites to use for models, radar, and the basic weather tools? DONE! You want to understand the structure of models and the role they play? DONE! You want to be able to construct forecasts from the ground up? DONE!
WEATHER SCHOOL will be presented in a seminar-type format where you'll have the ability to ask questions and dig deep. You’ll get the scoop on data acquisition, model analysis, severe weather, and actual forecasting from the big dog himself, T. Swails. With 43 years of experience and an uncanny ability to break the science down, you’ll open the door to forecasting like never before.
Along with the head master T. Swails himself, meteorologists Rebecca Kopelman and Nick Stewart of KGAN TV will be there to lend their knowledge and experience to the discussion. It will be fun, informative, and factual! This is the day for you to see, feel, and experience what it’s like to be in the hot seat of a meteorologist.
The seminar will be held January 25th and will last from noon until 5:00pm. We have limited seating and the cost is $99 dollars per person. A catered lunch will be provided. Again..not a lot of seats so reservations with a pre-payment are required. Sorry, no refunds. If there’s enough interest, a second session will be added in early February. To register or get additional information send an email to firstname.lastname@example.org
GIVE THE GIFT OF WEATHER. This might be the perfect gift for that hard to buy for person this Christmas. Along with a WEATHER SCHOOL admittance voucher, TSwails will send a special holiday greeting to your weather enthusiast if you give the gift of weather with the TSwails touch!
WEATHER SCHOOL AGENDA:
WELCOME AND INTRODUCTION
Purpose: To help weather enthusiasts understand the basics of forecasting and apply the knowledge and techniques learned to construct personal forecasts.
Session 1: DATA ACQUISITION
The essential on-line sites for models, observations, satellite and radar images, and general weather data.
Session 2: ANALYSIS:
Determining your objective goals. Short term, intermediate, or long-term. Understanding the process of analysis and its relationship to forecasting.
Model options and choices. What to use and when!
The GFS, EURO, NAM 3k, NAM 12K, Canadian, HRRR, MJO, ensembles, teleconnections, etc.
Locating, learning, and knowing what’s essential to make a reliable forecast.
The art and science of model interpretation: Using and understanding model output. Its called guidance for a reason!
Learn how to analyze key parameters such as:
Surface and upper air data
Vorticity and energy
Wind and pressure
Session 3: MAKING A FORECAST FROM MODEL GUIDANCE
A simulation of the basic process using model output.
BREAK: A 25-30 minute recess to enjoy a catered lunch…
Session 4: SEVERE WEATHER:
Thunderstorms, tornadoes, derechoes, and squall lines.
Soundings. What are they and why should I care?
Instability (CAPE) vs (CIN) Critical interaction involving moisture, heating, and forcing.
Uncovering the ingredients of a severe weather set-up.
TVS signatures. What to look for on radar.
Role of SPC vs NWS, and your local TV station regarding the warning process.
Simulated model driven forecast of a severe weather event/tornado outbreak
Session 5: WINTER STORMS:
The key ingredients required for significant winter storm:
How to forecast the rain snow line.
How to forecast snow totals from QPF
Determining totals from snow ratios.
What to look for at the surface and at upper levels (500 and 850mb)
Model bias and determining the storm track
Simulated model driven forecast of a significant Midwest winter storm
QUESTION AND ANSWER SESSION
An open period for attendees to ask questions regarding relevant topics or issues discussed during the day.
Some final words of inspiration from the events headliners
Once again, to reserve a spot or ask questions send an email to email@example.com See you when the bell rings! Roll weather...T. Swails