Really Wet Day 



Las Vegas got hit with some pretty intense rain today. We had a big and wet low pressure system over southern California pulling in moisture from the south. Sunday night we had a few sprinkles and Monday I recorded 0.24 inches of rain and got to show Caroline her first rainbow right at sunset. Early this morning, I woke up several times to rain pounding on the roof. About 6:00 a.m. when we get up, we had some more pounding rain. At one point, the street was running deeper than curb deep and about 15 feet wide with reddish muddy water. I really didn't want to know where that mud was washing from. Of course, on the way to day care I followed the mud upstream (it had almost stopped raining) and it was coming from the park just to the west of us. Just east of the park is a large stormwater detention basin. I'm glad the mud wasn't coming from there. Checking the Flood Control website for the basin, it had about 6 feet of water in it which is about 20% full. Here are the graphs from noon on the 18th.




And here is the rain gauge data from that location.



At work today we postponed a planned trip to scout mammal trapping sites along the Virgin River. I checked the rain gauge again at about 10:00 p.m. (if I was getting paid to do this, I'd check it at midnight). My rain gauge is an Tru-Chek rain gauge given to me during my Skywarn training. It is wedge-shaped so it is easy to read our more common readings of a few hundredths of an inch but still has the maximum capacity of 6 inches with less precision the more rain has collected. Well, I was amazed to find out that gauge was half full which was 2.07 inches. Here is a picture of it. I brought it inside to show Nancy. She was less than impressed.



Hey, I live in one of the world's driest cities. Our annual rainfall is about 4.5 inches per year so to get almost half that in a day is pretty cool. The Weather Service also thought it was pretty cool:

RECORD EVENT REPORT
NATIONAL WEATHER SERVICE LAS VEGAS, NV
126 AM PDT TUE OCT 18 2005

...RECORD DAILY MAXIMUM RAINFALL SET AT LAS VEGAS...

A RECORD RAINFALL OF 0.48 INCH WAS SET AT LAS VEGAS YESTERDAY. THIS
BREAKS THE OLD RECORD OF 0.36 SET IN 1963.

and

Statement as of 2:00 PM PDT on October 18, 2005


... Record daily maximum rainfall set at Las Vegas...
... Record monthly rainfall set at Las Vegas...

So far for today October 18th... 0.93 inches of rain has fallen at
McCarran International Airport. This broke the previous daily record
of 0.45 inches set in 1962 and was also the 3rd wettest October
calendar day on record.

So far this month... 1.41 inches of rain has fallen at McCarran
International Airport which set the record for the wettest October
on record. The previous record was 1.22 inches set in 1992.

Beginning at 100 PM on Monday and ending at 100 PM today... a total
of 1.37 inches of rain fell at McCarran International Airport. This
was the 6th wettest 24 hour period on record for any month.

This also puts the 2005 rainfall total at 7.31 inches which is the
7th wettest year on record... so far.  

Posted: Tue - October 18, 2005 at 11:20 PM          


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