Weather

Rob McClure

Your Forecast (and other resources)

06/25/14 9:39 PM | Weather

State Street Madison Check out the many forecast services you can utilize to see upcoming weather!

read article »

Madison Tornadoes

06/19/14 1:13 AM | Weather

lightning WORT’s own weather guru Rob McClure brings you detailed analysis of the recent tornadoes in Southcentral Wisconsin.

read article »

Your Forecast (and other resources)

03/31/14 7:57 AM | Weather

National Weather Service – Madison Forecast. Reliable, briefly-worded “spot” forecast. Hourly Forecast Graph or Hourly Numerical Data. A much “higher-resolution” view of the predicted weather to come. These give the NWS forecaster’s best prediction for future hourly readings of parameters like temperature, sky cover, wind speed and direction, precipitation potential, etc. They do not, however, indicate the confidence level (probability that the forecast will be accurate) for any given data point. For that, you should refer to the Forecast Discussion, issued daily around 3 AM and 3 PM, which will provide a much more nuanced view ….

read article »

The Skinny on the Forecast

06/24/13 8:18 AM | Weather

How DO weather forecasters come up with their forecasts? And why do they often say so little?

read article »

May 14 thunderstorms

05/15/13 5:11 PM | Weather

The local National Weather Service – Sullivan website is quite good about posting retrospectives on events of meteorological note, so it’s often a good place to look for analysis if something’s occurred that you find particularly noteworthy or unusual. But the site also often presents interesting debriefings on events that might otherwise have seemed mundane. The thunderstorms that formed west of Madison and moved over the area on Tuesday evening (May 14th) didn’t seem particularly unusual to most of us — they were in a declining state as they moved in, so by-in-large, they weren’t even terribly strong. But dying thunderstorms can produce an unusual phenomenon called “heat bursts,” and ….

read article »

The Cruelest Month

04/29/13 8:38 AM | Weather

After a brief flirtation with spring, including the first 70 degree temperature on 4/28 since back on October 25, we’ll see a cool-off of several days duration starting Wednesday, 5/1. Typical for the season, a “cut-off” low — a closed, mid-level circulation of cold air, detached from the bulk of the hemisphere’s cold air further north — will develop over the eastern Midwest Thursday and Friday, wobbling around nearly in placeĀ on most forecast maps through the weekend, bringing cool and intermitantly showery weather. But before then, we’ll have a foretaste of summer. As warmer weather starts to bring more convective activity into the area, you might find a couple of online resources quite useful. The first is the read article »

Warmer — but when?

04/22/13 8:43 AM | Weather

Have a look at this page — the 3-month outlook from the Climate Prediction Center. You can click into maps for a rough-sketch prediction of both temperature and precipitation anomalies for any 3-month period stretching forward over the coming year and a quarter. This tells you the probability of it being either warmer or colder, wetter or drier, than usual — not a terribly strong or reliable indicator necessarily – but of use to the idly curious, and especially to farmers and orchardists who need to bank on general weather trends relatively far in the future. The “Prognostic Discussion” link provides the latest meteorological thinking over the coming 90 days, and tells you what ….

read article »

Warmed by a dying storm

04/15/13 8:33 AM | Weather

An occluding cyclone (a low-pressure cell that is filling-in and dissipating) is quite prominent over Minnesota on the IR/visual image of the upper Midwest Monday morning, April 15th. (This image is live, and will look different if you’re viewing at a different time). The northbound portion of the circulation has brought a temporary respite in Madison from the endless winter we’ve been experiencing. But, light snow is likely to be back in the forecast by Friday the 19th. A listener called in last week to ask about an article she had seen in the Wisconsin State Journal about “atmospheric rivers.” This term was coined in the 1990s to describe the predominant ….

read article »

A More Nuanced View from the Weather Service

04/8/13 8:36 AM | Weather

The National Weather Service is the go-to resource for most weather information, but the public forecasts tend to be a bit constrained by the need to communicate simply and briefly. For those of you looking for a more in-depth and nuanced perspective on upcoming weather, the Forecast Discussion section of the local NWS websites can be quite instructive. It can also be quite instructional for learning meteorological terms — most of the obscure ones are hyperlinked to definitions so you can understand what the forecaster is talking about. You might have a look at both the LaCrosse Forecast Discussion and the Sullivan (Milwaukee) version. The former is sometimes more ….

read article »

April Fool’s…

04/1/13 8:21 AM | Weather

It’s still absurdly cold for the season. March ended -7.4 degrees F. below normal, with only three of the 31 days modestly above normal in average temperature. Here is an animated graphic from the Climate Prediction Center showing a North polar view of the earth, with warm and cold air (red and blue) battling for contention in the arctic. This is technically a map of mid-level atmospheric height anomalies, showing ridging (warm at surface) and troughing (cold at surface) over the past month. “500-hPa” refers to the mid level of the atmosphere, roughly halfway from the ground to the tropopause. Notice how strongly and repeatedly warm air intrudes across the arctic, pushing the ….

read article »
Page 1 of 212
Weather
Weather
News & Culture
Mondays @ ~10:00 AM
Wednesdays @ ~6:40 PM
Rob McClure
Rob McClure is the Weather Emperor, and rains his forecast into your ears during Global Revolutions and In Our Backyard.

rev. 52:74M