|The first NWS alert, for the Lovelock area, is on the bottom.|
UPDATE 29Jul2014: Also note that the Severe Alerts above mentioned "Dust Storm," not using the word "Haboob," which according to Wikipedia is derived from the Arabic word habūb, meaning "blasting/drafting." (I've seen other, similar derivations and translations of Arabic words and don't know which are most accurate.) Nevertheless, as you will see below, what we were about to witness was a huge dust storm with a miles-long wall of dust, often called a haboob in many parts of the world, including Arizona.
Our first glance outside wasn't too encouraging with regard to travel.
|First view of the haboob on the east side of the valley: a wall of dust coming up from the south.|
To begin with, I thought the dust was a fairly localized phenomenon coming from the Humboldt Sink, which is about 10 to 15 miles southwest of Lovelock, or perhaps it was coming from the combined Humboldt and Carson Sinks. The Carson Sink is the very large sink for the Carson River, located 15 to 35 miles south of Lovelock, beyond the West Humboldt Range. I'd never seen the Humboldt Sink kick up quite this much dust on its own, so I had to entertain a larger possibility.
|Shot of the haboob approaching Lovelock from the south. In this shot it has started to ride up over the south end of the Trinity Range beyond I-80, thereby already having overridden I-80 out near Toulon.|
|Three stitched-together photos of the same wall of dust, taken at 3:52 pm as we were scrambling to leave. The dust was already encroaching onto trees usually in view to the south.|
|As we got onto the on ramp for I-80, the dust looked like it would shortly pass over the Golden Gate truck stop (shown as Port of Subs and only approximately located by Google on this map)|
|A first look back at the dust after getting on I-80.|
|The haboob is now about to overrun the Lovelock L in the southern Humboldt Range (Google Maps location of the L).|
|Somewhere between the Oreana and Rye Patch exits, I could see that the wall of dust had gone past Coal Canyon (Google Maps location) and was steadily moving northward.|
|Just past Rye Patch, it looked like the dust storm had fully moved into Rochester Canyon (Google Maps location) and possibly, though not clearly, into Limerick Canyon (marked as "Lovelock-Unionville Road" by Google on the previous map).|
|Shot of the haboob from just northeast of Humboldt House. The trees are at Humboldt House; the small reddish hill on the left is one of the heap leach piles at Florida Canyon.|
|The haboob approaches a small rain shower in the Trinity Range.|
|Dust in Buena Vista Valley. The TA truckstop near the Mill City exit is visible in the distance to the right (west) of I-80.|
At this point in this photo-log, you might notice that some photos are oversharpened, due to motion, relative darkness, and an obviously improper ASA (ISO) setting by the photographer. I probably should have switched to an ASA of 800 or higher, and was probably using a normally adequate setting of 400.
|Another view of dust in Buena Vista Valley and the east side of the Humboldt Range. The trees are at the constantly closed Cosgrave rest stop|
(Google Maps location).
|A centered view of the Humboldt Range looking south-southwest down I-80.|
The tiny-looking, triangular knob in the broad central part of the range is Thunder Mountain. Star Peak is the high point to the left; the high point to the right is probably Van Zant Peak.
|Dust now appears to be coming over the top of the Humboldt Range in the gaps between Thunder Mountain and Star and Van Zant Peaks.|
|Looking back at our final view of the Humboldt Range as we approach the Rose Creek exit just east of Winnemucca.|
|As we approach Winnemucca, dust is rising in Grass Valley ahead of a thunderstorm coming in from the south.|
|Dust devil in Grass Valley.|
|Dust in Grass Valley on the right, and what appears to be dust beyond the low, north end of the Sonoma Range, somewhere out near Golconda.|
|A shot more clearly showing that some of the dust is rising east of the Sonoma Range rather than being confined to Grass Valley.|
This last photo was taken at 4:52 pm.
I had immediately, upon arrival at the apt, looked up the satellite photo for the area to see if the passage of the haboob could be seen. I thought maybe it could:
|Visible satellite image for 23:30 Z, or 4:30 pm PDT.|
|Cartoon of possible location of haboob across northwestern Nevada in cyan; wind directions as apparently indicated by moving dust and storms are shown by magenta arrows. These are my interpretations only and have not been verified by a meteorologist.|
The original weather alert by the NWS for Churchill County "INCLUDING PYRAMID LAKE-INCLUDING THE CITIES OF. FERNLEY. FALLON. LOVELOCK. SILVER SPRINGS" and remaining in effect until 8 pm is archived here; the original NWS alert for Humboldt County "INCLUDING THE FOLLOWING LOCATIONS. WINNEMUCCA. MCDERMITT. PARADISE VALLEY. GOLCONDA SUMMIT" and remaining in effect until 11 pm is archived here.
How to drive in a haboob or large dust storm (STOP DRIVING!!: DO NOT ENTER THE STORM!! DO NOT USE FLASHERS!! Pull farther off the road than shown in the above videos — ALL the way over past the paved or flat to sloping shoulder! READ THE PAGE AT THE LINK!!).
More about Wireless Emergency Alerts (WEA).
Wikipedia on haboobs.
The Northern Nevada Haboob (of May 22, 2014).
P.S. This is my 1004th post!