
Here we go again.
Fresh off of March’s bomb cyclone and April’s unusually large storm, this week will feature yet another strong storm system that could flirt with Colorado pressure records.
The sea-level pressure in a storm is a key measurement of a given storm’s overall intensity. The lower the pressure, the stronger the storm. In this week’s case, a pressure in the low 980s in eastern Colorado would be indicative of an extremely strong storm system, particularly for the month of May. The storm’s intensity is also helping fuel a significant severe weather and flooding risk for parts of southern plains this week.
This has to be near the top in terms of total volume of water in a 7-day precip forecast. , any chance you have the stats on that? It's going to be a wet week in a whole lot of places…
— Russ Schumacher (@russ_schumacher)
According to the Colorado Climate Center’s official archives, the lowest pressure recorded in the state of Colorado during the month of May came way back in 1927, when a 978.3 reading was measured in Colorado Springs. This would put a Colorado May pressure record unlikely, but within reach if this week’s storm beats current computer projections.
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Here's are the record MSLP maps for May. (Source: ) Lowest is 978.3 at CO Springs. The records were set on 8-9 May 1927 for CO Springs up through central Nebraska (Northern Colorado was 21 May 2008…the day before the Windsor tornado.)
— ColoClimateCenter (@ColoradoClimate)
, an area of low pressure with an estimated central pressure of approximately 984 millibars (mb) was forecast to skirt the Colorado and Nebraska border on Tuesday afternoon. A few individual computer models brought some of those pressure estimates even lower, potentially putting the May state pressure record in play.
We gonna set low pressure records for May too? Euro has 980 mb over SW Tuesday afternoon. Figure it will be close to for and . What say you, ?
— Brian Bledsoe 🐊 (@BrianBledsoe)
Regardless of whether or not this storm breaks a record, strong winds, heavy rain and, yes, the possibility for more late-season snowfall are all in the cards this week for the Denver area. In this case, a stronger-than-usual area of low pressure can help pull in colder air, setting up the possibility for a few wet snowflakes along the Front Range on Monday night and Tuesday morning.
This is part of what’s been an extremely active spring storm season. Typically, Colorado’s busiest storm season comes during the spring, when clashing temperatures fuel stronger storms, particularly for the plains. March, April and May have overall featured above normal precipitation and below normal temperatures, including March’s (and possibly April’s) bomb cyclones.
A weak El Niño and an active subtropical jet stream are generally cited for the active spring. Another big — and potentially record-setting — storm this week would only help to continue the busy start to Colorado’s stormy spring.
Chris Bianchi is a meteorologist for WeatherNation TV.
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