The radar image this morning at 5:30 AM showed rain...some heavy... offshore.
You can listen to the podcast below or through your favorite podcast server.
This blog discusses current weather, weather prediction, climate issues, and current events
The radar image this morning at 5:30 AM showed rain...some heavy... offshore.
You can listen to the podcast below or through your favorite podcast server.
Over the lowlands of Washington State, today was sunny and generally clear. Not a drop fell out of the sky.
But something very different happened in the mountains, where the atmosphere became unstable, resulting in cumulus clouds and showers. Even some lightning!
Let me show you and explain.
To begin, here are two visible satellite images: one at 6:30 AM and the other at 5:30 PM today.
The morning image had little clouds with snow visible at higher elevations
You can see the changes from ground level from the wonderful Crystal Mountain cam.
At 6:20 AM it was clear looking to the east.As I will demonstrate below, this past week has been unusually cool around the region.
But that leads to another question....is mid-June getting warmer or colder?
A strange question when there is so much talk about global warming. But as you will learn below, the truth will be stranger still 😀
Let's start is an image this morning at the Paradise Visitor Center on Mount Rainier (about 5000 ft up). They had a mixture of rain and snow showers with fog. Yuck. Not my choice for hiking!
Next, consider the differences in daily average local temperatures from normal for the past week (below). Green, blue, and purple colors are below normal.
No wonder I have been wearing my sweatshirts! Most of Washington State has been cooler than normal and much of western Washington has been 3-5F below normal. My tomato plants have been struggling for a reason.
A Steve Pool memorial undergraduate scholarship has been established in his honor (see below)
Once funded by contributions, this new undergraduate scholarship will provide financial assistance to promising Atmospheric Sciences students, fostering the training of the next generation of meteorologists and atmospheric scientists.
If you want to contribute or learn more about Steve, check out the webpage below. Thanks so much....cliff
Cold, moist unstable air has been moving into the region on Saturday, with the showers obvious on the high-resolution visible satellite imagery (see below).
If hiking on Mount Rainier you would have "enjoyed" a mixture of rain and snow with very little visibility (see below).
Steve Pool was a leading television meteorologist in Seattle for nearly 40 years..... but he was so much more.
In addition to providing meteorological insights and weather education to millions of viewers across western Washington, Steve was among the first African-American TV weathercasters in the nation and frequently contributed to weather coverage on national programs such as Good Morning America.
He was committed to the University of Washington and the UW Atmospheric Sciences department, establishing an internship program that trained dozens of UW students in broadcast meteorology, including current KOMO lead meteorologist, Shannon O’Donnell.
Steve served as Master-of-Ceremony for many departmental and UW public outreach functions, greatly contributing to their attendance and success.
Steve passed away last fall, but his numerous contributions, extraordinary character, humor, and priorities don't have to be forgotten.
You can help.
A memorial undergraduate scholarship has been established in his honor (see below)
Once funded by contributions, this new undergraduate scholarship will provide financial assistance to promising Atmospheric Sciences students, fostering the training of the next generation of meteorologists and atmospheric scientists.
If you want to contribute or learn more about Steve, check out the webpage below. Thanks so much....cliff
After a very pleasant dry spell, another rainy period is ahead for the western side of the region and the Cascades on Friday and Saturday. And there is no hint of heat waves in our future.
Today and Thursday will be partly sunny, with highs in the upper 60s to low 70s in the west, with the Columbia Basin being about 10F warmer. Typical June weather.
But on Friday, an upper-level low-pressure area (or trough) will be moving in (see below for 8 PM Friday), bringing clouds, showers, and cooler temperatures.
Such features have been persistent this spring.
The forecast 24-h precipitation total ending 5 PM Friday shows showers in the west, with the heaviest precipitation along the coast. Eastside dry.
The next 24-h (ending 5 PM Saturday) is quite wet in the West, particularly over the western slopes and crest of the Cascades.Lots of thunderstorms, some approaching severe levels, have hit eastern Oregon and Washington during the past day.....and there are severe thunderstorm warnings out between Wenatchee and Spokane as I write this blog (see below).
The latest radar image over eastern Washington shows strong storm cells, with the red colors indicating substantial radar reflectivity. Such high levels are either very heavy rain or hail.
Earlier today (around 3:30 PM) similarly strong storms were moving eastward across southeast Oregon (see below)
Precipitation during the past day has been substantial over southeastern Oregon (up to 1.23 inches) and northeast Washington has also experienced some of the thunderstorm showers (see below).
This is the first major lighting event of the year for our region. Yesterday (Saturday), there was a substantial number of lightning strikes over eastern Oregon ( see below).
The latest lightning strike map (at 7:50 PM Sunday) shows plenty of lightning, with thunderstorm cells over eastern Washington and others over southeast Oregon.
So why so much lightning?
Today an upper-level trough moved through, as shown by the weather map at roughly 18,000 ft (500 hPa) this morning at 8 AM (the red dashed line shows the trough line). In front (east) of the trough, there is both upward motion and the movement of warm, moist air from the south, both very favorable for generating thunderstorms.
The atmosphere over eastern Washington and Oregon had lots of CAPE (Convective Available Potential Energy)... think of this as fuel for thunderstorms.
To illustrate, here is the CAPE prediction for 8 PM tonight (Sunday). Some values getting as high at 600 (J/kg). Decent for around here, a big yawn for those in the Midwest.
All our local thunderstorm action will be over over night as the trough moves inland and cooler marine air moves into the region.
The radar image this morning at 5:30 AM showed rain...some heavy... offshore. As shown in the satellite image at the same time, much of that...