Storms in August were more plentiful than in July although there were still some extended breaks in the monsoon. Rainbows remained elusive for me. I was able to photograph a few that displayed short segments but I never captured a full rainbow. Lightning, on the other hand, was plentiful and I did well in that genre.
Here is a partial summary of August monsoon photography.
04 August 2024
Mormon Lake Overlook is a short drive from Flagstaff and affords an amazing 360Ā° view. This was one of the many days with only a partial rainbow but the juxtaposition of the rainbow and the tree in the grasslands of Anderson Mesa was a pleasing composition. A few minutes later the Sun beautifully illuminated some light rain falling from a dissipating thunderstorm. The color was intense and only lasted a few minutes.
A short segment of a rainbow above the grasslands of Anderson Mesa in northern Arizona.A curtain of light rain from a dissipating thunderstorm is brilliantly illuminated by the setting sun.
After an early start to the monsoon in late June, the monsoon went on an extended break. For much of July, high pressure remained to our west resulting in northwest to northeast flow across the region. Consequently, tropical moisture had to take the long route over the eastern Pacific Ocean, across the Pacific Northwest, then southward across the High Plains and Rocky Mountains. By the time it arrived, much of the moisture had been depleted, especially in the lower levels. The resulting storms were generally weak and produced little rain, and even less lightning.
Here is a summary of what I did manage to photograph during that period.
11 July 2024
Weak storms produced little in the way of rain but did result in a nice sunset.
Sunset and reflected sunlight on Lake Mary.
15 July 2024
A few strong storms formed on the north side of the San Francisco Peaks and I positioned myself Ā at the entry to Wupatki National Monument. There was very little lightning but I did get this photograph that shows the landing point of the bolt. I also got power poles.
Lightning on the north side of the San Francisco Peak showing the landing point of the bolt.
16 July 2024
Radar indicated some storms south of Mormon Lake–a favorite spot for shooting storms because of its expansive views. This storm produced only a few visible bolts of lightning but I did manage to capture this one–along with the waxing gibbous Moon.
Distant thunderstorm with lightning.
21 July 2024
While taking a short hike to Alfa Fia Tank near Snowbowl and the San Francisco Peaks I was happy to see some convection developing that had nice reflections in the water. Look closely and you will also see the ducks.
Reflection of developing storms in Alfa Fia Tank near Snowbowl in the San Francisco Peaks.
23 July 2024
I was confident that Grand Canyon would produce good storms with possibilities for lightning and rainbows. It didn’t. The best I could do was shoot this ultra-wide view of the clouds using a 12mm fisheye lens.
Ultra-wide angle view of Grand Canyon from Navajo Point.
24 July 2024
The next day in Sedona was a bit better. Although there was some lightning I managed to miss it all because it was never in the direction that the camera was pointed. Look carefully in the upper left corner of this image and you can just barely see a few filaments of the lightning stroke which occurred to the left of the camera. I should have shot this with a wider field of view. On the other hand, the sunset was pretty good.
Heavy rain falling from a monsoon thunderstorm.Another great sunset in Sedona, Arizona.Sunset in Sedona.
26 July 2024
A few days later I tried something different and concentrated on getting the very early stages of convective development over the San Francisco Peaks. A bonus was catching the reflections of the clouds in Marshall Lake. By the time I left there was lightning and I was able to capture a few bolts.
Reflection of developing clouds in Marshall Lake, Arizona.Reflection of developing clouds in Marshall Lake, Arizona.Lightning over Marshall Lake with the San Francisco Peaks in the distance.
Time-lapse of convection developing over the San Francisco Peaks (200x speed).
While shooting these still images I had another camera capturing time-lapse video. It’s always fun to see the development of clouds in time lapse.
26 July 2024
This was a last-minute decision as the radar showed storms developing west of Flagstaff. I drove to Mormon Lake hoping for sunsets, rainbows, and lightning. Two out of three isn’t bad.
Sunset colors on thunderstorms and anvil clouds.Lightning west of the San Francisco Peaks.In-cloud lightning in the anvil of a thunderstorm.Lightning from a distant storm located over Grand Canyon. Wish I had been at the Canyon.Radar screen capture showing location of storm relative to my position.
This storm was located over Grand Canyon and was producing lightning bolts into the canyon. I wish I had been there instead.
How hot was July, anyway?
July 2024 was the second hottest July on record. Only July 2023 was hotter.
Number of days with the maximum temperature >=90Ā°F in Flagstaff. 2024 was the second hottest July; only 2023 was hotter.Mean monthly temperature for July. 2024 was the second hottest July on record; only 2023 was hotter.July total rainfall from the Flagstaff raingauge network.
Total rainfall for the month was below average but not anywhere near record territory. Thank goodness for that!
The North American Monsoon got an early start in northern Arizona this year with copious amounts of precipitation over the San Francisco Peaks and surrounding areas. Unfortunately, we are now experiencing an extended monsoon break with mostly clear skies and hot temperatures.
Here are some photograph taken during that wet period.
A partial rainbow over Upper Lake Mary near Flagstaff, Arizona.The rainbow is gone but sunset colors are seen in the clouds and the reflection in the lake.A partial rainbow over the grasslands of Wupatki National Monument.A zoomed-in segment of the rainbow showing supernumary bows.Sunset at Wukoki Pueblo in Wupatki National Monument.
Here are the June rainfall totals from the Flagstaff rain gauge network.
June rainfall totals for the Flagstaff raingage network.
A few days ago we had a cold front move across the area and overnight temperatures fell below freezing for a few hours in the higher terrain. It turns out that October is a good month for fog formation from these first frontal incursions. Area lakes still have relatively warm water from the recently ended summer. The passage of the cold air over the warm water allows for increased moisture flux from the warm water into the colder air that increases the dewpoint (and relative humidity) and can result in fog. Also, the shorter days–and longer nights–allows radiation fog to develop in the valleys.
Fog in the Mormon Lake basin with a colorful but diffuse glory.A small sailboat lies at anchor on a foggy morning at Upper Lake Mary.Fog and Upper Lake Mary.
With that in mind, I found myself driving past Lake Mary to Mormon Lake before sunrise on Tuesday morning. As I approached Lake Mary visibility dropped quickly to 1/4 mile, then 1/8 mile, and then 1/16 mile. Visibility improved once I passed both Lower and Upper Lake Mary. At Mormon Lake, there was fog swirling in the basin and the rising Sun was just starting to illuminate the summits of the San Francisco Peaks.
Fogbow over Upper Lake Mary.Fogbow over Upper Lake Mary.
After the fog dissipated in Mormon Lake, I returned to Lake Mary where the fog was still present and I was able to capture fogbows plus a nice photo of a sailboat anchored in the lake.
Time-lapse video of the swirling fog in the Mormon Lake basin.
Time-lapse video of the swirling fog and glory in the Mormon Lake basin.
The time-lapse videos show remarkable motion of the swirling for over Mormon Lake as well as the colorful but diffuse glory that was present.
(1) Steam fog (arctic sea smoke). Steam fog forms when water vapor is added to air that is much colder, then condenses into fog. It is commonly seen as wisps of vapor emanating from the surface of water. This fog is most common in middle latitudes near lakes and rivers during autumn and early winter, when waters are still warm and colder air masses prevail.
(2)Ā Radiation fog (ground or valley fog).Ā Radiational cooling produces this type of fog. Under stable nighttime conditions, long-wave radiation is emitted by the ground; this cools the ground, which causes a temperature inversion. In turn, moist air near the ground cools to its dew point. Depending upon ground moisture content, moisture may evaporate into the air, raising the dew point of this stable layer, accelerating radiation fog formation.
This Winter has been relentless with snowfall now at about 200% of normal for Flagstaff. Many of these storms have made it difficult to get to various locations for shooting photos of the weather. Fortunately, the last few storms have allowed me to do some pre-dawn travel to favorite locations.
The first two photos are from the morning of 16 March 2023 when I thought there was a good chance of low clouds and fog in Grand Canyon. In fact, there was too much fog and I was only able to briefly see into the canyon while at Lipan Point. I finally moved westward to Moran Point where there was a larger break in the fog allowing sunlight to illuminate the canyon.
Early morning fog in Grand Canyon from Lipan Point.Early morning fog in Grand Canyon from Moran Point.
A week later we had a snow-turning-to-rain event that left the roads relatively easy to travel and I ventured out to Mormon Lake on the morning of 23 March 2023. The abundance of moisture over the previous few days resulted in lots of fog in low-lying basins including Lake Mary and Mormon Lake. Clear skies to the east allowed the rising sun to illuminate the San Francisco Peaks in the distance.
The distant San Francisco Peaks rise above fog filling Mormon Lake basin.Fog fills Mormon Lake Basin. A faint Glory is seen left of center while a short segment of a fogbow is right of center.A fogbow along Upper Lake Mary.
I was also interested in capturing images with a Glory/Brocken Spectre and fogbows. Both were faintly visible in some of the photos where I was above the fog. A better fogbow photo was shot when I was in the fog.
And here is a time-lapse video of the swirling fog in the Mormon Lake basin.
Time-lapse video of fog swirling in Mormon Lake basin.
The medium-range forecasts indicate that Winter is not yet done.
