Glenn Johnson

Rochester

Meteorologist at WHEC-TV (Rochester, NY)

Meteorologist for News10NBC First Alert weather forecasting unique weather of WNY. SUNY Brockport grad. Former teacher Extreme Weather Monroe Community College.

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Articles

First Alert Weather: Now that showers have arrived, they may stay awhile

2 days ago | whec.com | Glenn Johnson

ROCHESTER, N.Y. – It will not be a continues rainfall, but showers will likely be off and on for at least the next few days. Similar to a weather pattern that we had earlier last week, an elongated low-pressure system will traverse across the eastern half of the country bringing periodic showers to the Rochester. There is the chance of some thunder later Thursday and Friday, but there is no indication of severe weather.
First Alert Weather In-Depth: Summer Heat Builds Early Across the U.S.

3 days ago | whec.com | Glenn Johnson

ROCHESTER, N.Y. – Summer is on its way! You can already feel the heat building this Monday across Western New York. While the summer solstice is still just over five weeks away—arriving on June 20—it is clear that air conditioning season is creeping in early. It is always interesting to compare high temperatures across the country. Latitude does not always tell the full story. Take New Orleans, Louisiana, for example.
First Alert Weather: Warmth returns, but eventually so do the showers

3 days ago | whec.com | Glenn Johnson

ROCHESTER, N.Y. – A high-pressure system has overspread the great lakes today and that produced a cool, dry northerly wind for this Mother’s Day. However, that bubble of high-pressure will be moving off the east coast and will shift the wind to a more southerly direction for Monday and this will bring in much warmer weather. In fact, the temperature will rise some 20 more degrees compared to Sunday.
First Alert Weather: Some much needed dry, sunny weather for Rochester

4 days ago | whec.com | Glenn Johnson

ROCHESTER, N.Y. – Plenty of sunshine for the Lilac Festival and for Mother’s Day as a high-pressure system settles over Western New York. It will be slightly cooler for Sunday, but the bright skies and light winds should make for a very pleasant day. However, that ridge of high-pressure will slide off the east coast for Monday.
First Alert Weather In-Depth: What does a 30% chance of rain really mean?

6 days ago | whec.com | Glenn Johnson

The News10NBC Team details breaking News, Traffic and Weather. ROCHESTER, N.Y. – Are you feeling waterlogged by all the wet weather this past week? You are not the only one. As a meteorologist, I am always scanning the horizon for a break in the pattern. Over the past seven days, rain gauges across the region have collected anywhere from 1.5 to over 3.5 inches of rain. That is more than half of the typical monthly rainfall and we are only a week into May.
First Alert Weather In-Depth: Backyard science and tracking rainfall the easy way

1 week ago | whec.com | Glenn Johnson

ROCHESTER, N.Y. – We are just a week into May, and already one of the most useful weather instruments is proving its worth. It is the classic rain gauge. This simple tool, often made of clear plastic, helps measure liquid precipitation right at your home or workplace. And it is important because rainfall is cumulative—it adds up over time. That is especially relevant in Western New York, where rainfall totals can vary significantly even across short distances.
First Alert Weather In-Depth: What is happening in the Middle of Lake Ontario? Ask the buoy

1 week ago | whec.com | Glenn Johnson

ROCHESTER, N.Y. – Gathering accurate atmospheric and water data over the open waters of Lake Ontario is no easy task. While satellite and radar tools provide useful insight, nothing compares to direct, on-site measurements. Since there are few permanent installations out on the lake—aside from the occasional passing boat—real-time, high-quality observations have long been limited.
First Alert Weather In-Depth: Stuck in a spring slowdown with the omega block

1 week ago | whec.com | Glenn Johnson

ROCHESTER, N.Y. – The start of May has not exactly delivered ideal weather for Western New York. Cloudy skies, occasional fog, and frequent showers have kept sunshine to a minimum. At News10NBC First Alert Weather, we recognize this setup as part of a well-known meteorological pattern. Typically, the jet stream—those high-altitude winds that steer our weather—flows west to east. This helps systems move along at a steady pace.
First Alert Weather: Slow moving weather pattern keeps showers over Rochester

1 week ago | whec.com | Glenn Johnson

Sometimes weather systems move quickly, other times very slowly. It is the slow movement of a low-pressure system now located over the upper Mississippi Valley that continues to funnel “off and on” showers into the eastern Great Lakes. It will take several more days for the weather system to finally move out and drier weather to return to Western New York.
First Alert Weather: Slow moving wet weather pattern

1 week ago | whec.com | Glenn Johnson

ROCHESTER, N.Y. – The month of May has started rather soggy as Western New York has had three days of measurable rainfall. Unfortunately, there is more wet weather to come. Patience will be needed with this slow-moving weather pattern as there is a high probability of rain for at least Sunday, Monday and Tuesday. The rain will be off and on during this time with the chance of a thunderstorm on Monday. Temperatures will be rather cool again for Sunday as the mercury will remain in the lower 50s.