Davis
Instruments Weather Club
September/October 2005
In This Issue:
NEW PRODUCT ANNOUNCEMENT:
Long-Range Repeaters: Now You Can Get Miles of Reception
As you lucky Vantage Pro2 owners know, the Vantage Pro2 has a very effective transmitter. (See Mike Hadfield’s story in the Mailbag section.) For most of you, the 1,000’ (300 m) range is more than enough to get data from the Integrated Sensor Suite out on your back deck to the console in your kitchen.
But some users want even more range. All you have to do to boost your reception another 1,000 feet is to add one of our Wireless Repeaters for Vantage Pro2 . Still not far enough? Add up to eight repeaters to a single station or form a network by linking eight repeaters to eight stations.
The long awaited repeaters for Vantage Pro2 are in stock and ready to ship!
STILL not far enough for you? We’re delighted to announce our newest baby, created just for you extreme distance cravers: the Wireless Long-Range Repeater. This one will send your signal up to two miles (3.2 km) under typical conditions. (You might get even better results – see the “late-breaking note” below.) The Long-Range Repeater has a transmitting and a receiving cable, each with an end which will connect to an external antenna, sold separately. (You’ll need two antennas for each repeater.) You can choose either our large Omni Directional Antenna, which has a range of 1,560' (476 m) in all directions, or our Yagi Directional Antenna, which has a range 5,000' (1.5 km) in one direction.
(Late-breaking note: Bruce Walter, a Davis engineer and rocket fan, recently took a Vantage Pro2 with a Long-Range Repeater (Yagi-to-Yagi) on a field trip to the Black Rock Desert, Nevada, to watch some rocket launches. Bruce decided that the wide open spaces were perfect for testing the best-case scenario range of the Long-Range Repeater, so he took his console and started walking. Then he got in his car and drove. When he got 4.7 miles away from the Integrated Sensor Suite, he found that he was still getting reception but couldn’t find a way to go further away! More on rocketry at Black Rock .)
We’re so excited about this new system we are looking for the perfect site where we can take photos of our new Long-Range Repeater in action. An agricultural setting or any location where distance is an issue (perhaps an industrial, school or research stetting?) would be ideal. The site must be within an hour's drive (two hours, max) of Hayward, California. What's in it for you? Fame and glory, of course. Not to mention our eternal gratitude and maybe even one of our famous Davis T-shirts or hats.
If you'd like to volunteer, send an e-mail with a short description of your site (and maybe even a digital snapshot) to news@davisnet.com.
WeatherLink for Alarm Output: Complicate Things All You Like!
One thing we really value here at Davis is flexibility. We love to design systems that you can mold to your own use. Our customers have come up with many ingenious ways to use their Vantage Pro2 to make life easier. We just came up with one to make it easier to make life easier! WeatherLink for Alarm Output is a weather tinker’s dream. It harnesses the power of all that data and all those alarms to let you set up customized alarm "recipes" that, in turn, control four switches. You choose what data you want to use, in any combination, and then use the combination to control whatever in your life needs weather-based control. For example, you could set an alarm that will turn on a switch only when the high wind speed is over 20 mph, the wind direction is between the south and west, and it’s between the hours of 6 a.m. and 9 p.m.. "Recipes" can be as simple or as complicated as you need them to be. (We’ll trust you to make them nice and complex! And we'd love to see what you come up with. Send your "recipes" to news@davisnet.com.)
WEATHER 101:
The Hurricanes We’ll Never Forget: Katrina and Her Nasty Little Sister, Rita
If anyone ever hints that your weather hobby is trivial, just breathe the name “Katrina.” After that Queen of All Hurricanes slammed into our beloved Gulf Coast, anyone who is making an effort to understand the weather must be viewed with new respect. No matter how much we study inversion layers, fronts, and cyclonic systems; no matter how much carefully collected data we keep; the reality of that devastation reminds us that we have a long way to go – and much to learn. With Rita’s untimely arrival, that point was doubly-made.
What we do know is that the first priority has to be reaching out to the people who were caught up in those terrible storms and ferocious flooding. (You E-News readers knew the real danger would come from the storm surge even more so than the wind.) It’s hard to imagine starting life again when all you’ve worked for and loved has been washed away or buried in toxic muck.
But we know how Americans are. We’ve no doubt that New Orleans and the Gulf Coast will come back to the vibrant life it had just a few weeks ago. It may take years, but a new, and in some ways, better New Orleans will rise. We think the next time a “Katrina wannabe,” like Rita, makes landfall, it’ll meet much more storm-proof communities rebuilt with the careful planning born of experience. In the meantime, we know you’ve already given, but give again if you can. Click here for links to the Red Cross , the Salvation Army, the Gulf Coast Foundation, and the Network for Good.
In an eerily timely release, a new report in the journal Science warns that hurricanes are going to become more and more intense thanks to global warming. Scary, but important reading, as reported on Forbes.com.
Weather Check Quiz Question 1: Is storm surge simply the result of the high winds pushing the water ashore?
(Click here for answers.)
Extra Credit: Back in 1947, Dr. Irwin Langmuir made the first serious attempt to alter the weather on a large scale with Project Cirrus. What was it? Did it work?
(Click here for answers.)
WEATHER STATIONS IN ACTION:
Vantage Pros From Speedways in Shanghai to Your Own Backyard

It was Vantage Pro2 in the lead all the way! Alvin of EcoWatch, our Australian distributor, found a way to combine two things he likes very much: Vantage Pro2 and fast cars. He sent us this photo of a Wireless Vantage Pro 2 used by an Australian car racing team at a race in Shanghai, China.
“The extra antenna are used for the telemetry gear in the race cars,” Alvin told us.
Vroom, vroom! Go Vantage Pro2!
WeatherBug Backyard Lets You Share the Weather Wealth
As many of you know, we offer a number of ways to share your weather data with your friends, family, surfing buddies – the whole world! Now there’s another great new choice and they are extending a special offer to Davis Weather Club members. WeatherBug, a big fish in online weather, has released a software program which shows your backyard data to their millions of users across the USA as well as to your friends and family!
WeatherBug's Backyard is growing fast and is lucky enough to have its network made up of 100% Davis weather stations.
Here’s how it works. Just click on the WeatherBug store and buy their WeatherBug Plus. It’s usually $19.95 but they are offering a $5.00 discount for Davis weather folks. WeatherBug Plus is the ad-free version of WeatherBug, packed with extra features like neighborhood digital forecasts, lightning information, and a gallery of “skins.”
(Of course you need a Davis weather station. If you don’t already have one, why are you just sitting there reading the E-News?)
Load WeatherBug Plus on your PC and you can see your backyard data in the “live screen,” and send the data back to WeatherBug where it is aggregated on a Backyard map by geography.
Then all you have to do is tell your friends and family to get the free version of WeatherBug and they too can watch your weather!
EXTREME WEATHER STATION CONTEST:
Three Caps to Three Far-Flung Davis Friends: Tony, Paul and Chaz
Our big winner “Far-Flung Station Contest: United States Category” had no competition! Paul E.R. Packbier’s Vantage Pro Plus is located on U.S. soil -- in the U.S. Territory of Guam. It’s in the United States, but it’s 9,322 surface kilometers (5,792 miles) from Hayward. Nobody can beat that! Give that man a cap!!

The big US winner enjoys stunning views of its far-flung home: Guam!
In our international competition it was a much closer race. Tony Brownbill, shown below showing off his Vantage Pro at his holiday house in Peterborough, Victoria, Australia, thought his weather station might be the most “far flung.” And he was right, but not by much. By our calculations, his weather station has gone 12,867 km (7,995 miles) from home here in Hayward.

Tony Brownbill takes first place in the international category for his station in Victoria, Australia.
“The house faces the southern ocean on the west coast of Victoria,” Tony wrote. “Although we don't get snow down at Peterborough, we get other types of extreme weather including high winds and squalls, as well as very high UV readings during the summer months. I do a lot of fishing in the summer months, and around this coast it is important to know what the local forecast will be for the day. The area is a little isolated it is not always possible to get an up to date and accurate forecast for the area. The wind shifting into the south or southwest will pick the sea up very quickly and it is important to read the signs and make sure you are home before this happens. My Vantage Pro Plus has been installed for about 10 months and is working extremely well predicting the weather!”
Two other entrants from that quadrant of the planet were very close behind. Gary Gorusch pointed out that Tasmania has lots of Vantage Pros up and spinning in that fresh air of theirs, because schools in Tasmania were granted VPs as part of their AirWatch Program. He nominated the one at New Norfolk as their official entry into our contest. That one is just a little closer to home at 12,788 km (7,946 miles). And nipping at their heels in this photo-finish race is Peter Drew’s Vantage Pro2, located on a pole above the roof of his home in Melbourne, Australia, at 12,663 km (7868 miles) from Hayward.
We had several other interesting entries, and so we just have to mention our seven runners-up!
In fourth place, at 10,910 km (6,779 miles) from Hayward, is Yannis’s Vantage Pro2, installed way up high (1,640 meters, 5,000 feet) on a mountain in Peloponissos, Greece. 
Yannis' Vantage Pro2 catches heavy gusts on its mountain-top home in Greece..
As you can see,Yannis had to tie his Vantage Pro2 down. Apparently, it gets a bit of wind up there! Yannis accesses his data remotely by GSM modem.
In fifth place, we have another Greek station. 
This Greek station keeps resort-goers weather-aware.
We guess this Vantage Pro keeps escaping – they had to build it a little fenced yard at the
Roxani Country House Hotel
, in Roxani, Greece. If it got out, it would have to run 10,652 km (6,619 miles) to get back home to Hayward!
Sixth place goes to Roger Matthews who knew he was “too close to the beaten track to get this one.” Strange, but 10,505 km (6,527 miles) away from Hayward is too close in this race!

It seems Auckaland, New Zealand is closer to Hayward that one would think!
But,” he wrote, “I have recently put a Vantage Pro on the roof of my new house in Auckland, New Zealand. It is quite an exposed spot and I have recorded winds over 80 kmph (50 mph) every month for each of the three months it has been operational.”
(Roger added that his parents wanted to enter the contest too, but they realized that they were about 60 km closer to Hayward than Roger, so they admitted defeat! So much for filial duty!)
Seventh place in the international category goes to American Chaz Dallachie, who put a new Vantage Pro2 on the roof – in Okinawa, Japan on an American Marine Corps base, about 9,852 km (6,122 miles) from Hayward. 
Is this Vantage Pro2 on a U.S. Marine Base in Okinawa, Japan, American or Japanese?.
“I am not sure if I count as international or American,” Chaz wrote. Well, Chaz, were very proud to count you as American and your Japanese-American station can deal with its own bicultural issues. All we care about is where the station is right now! But even if the soil under this house may be Japanese, the base is American. And that weather station is a bit farther from home than the one in Guam, so we just feel we need to send Chaz a cap too!
Bringing up the rear, but with true class and style, is Rui F. Lourenco, of Figuerira da Foz, Portugal. Rui knew that his Vantage Pro2 was probably not the most far-flung. At just 8,997 km or 5,590 miles, he’s right. 
Rui's Portugese station may be in last place, but it looks GOOD!
But it is one of the prettiest, set atop such a lovely yellow house that the skies above are inspired to remain consistently and exceptionally blue!
“I wanted to participate anyway and also congratulate you for this excellent product,” Rui wrote. “I purchased my station last April and it is working perfectly, as expected. The Davis VP was always my first choice after spending a considerable amount of time analyzing the available products in the net. My hobby as a private pilot got me interested in weather phenomena and I decided to have my own station to monitor the local weather trends (mainly to help my "go/no go" flying decisions).” He posts his data on his
website
for all to enjoy.”
Weather Check Quiz Question 2: Our two Greek contest entries are looking forward to some peaecful halcyon days. What are we are referring to – and what do the halcyon days have to do with Greece? (Click here for answers.)
This Month’s Challenge:
Have You Got the (Drip, Drip) Wettest Weather Station?
Here in the USA we’ve had enough rain and wind, but we know that we still have two months left in hurricane season. So we might as well celebrate some extreme weather. Here’s this month’s challenge: prove your weather station is the wettest by sending us your highest rainfall data. (We know what you are thinking – and we leave it to you! It can be the most inches per hour, most inches per 24 hours, or most rainy days in a row!) The data should be for anytime between November 1, 2004 and October 30, 2005.
The owner whose station proves itself to be the wettest will get a Davis cap to keep his poor noggin dry! Send your data, a bit of background information, and if possible, a photo of your station, by November 5. (news@davisnet.com)
Weather Check Quiz Question 3: If you want to win a Davis cap this month, you could stack the odds in your favor by moving. Where in the world have the records been set for greatest annual rainfall, greatest one-month rainfall, and greatest 12-hour rainfall?
Extra Credit: If you wanted to move somewhere that would insure you would NOT win this one, where would it be?
MAILBAG:
Vantage Pro2 Makes Mike Unpopular with TV Weatherman
Mike Hadfield of Roswell, New Mexico, used an old fashioned ball-point pen and paper to tell us how pleased he is with his Vantage Pro2.
“Now I argue with our local TV ‘Weather Guessers’ with some authority,” he wrote. “Especially their sunrise/sunset times (which can be off by up to an hour!). They also use the same sunset time for two months! Or how about Roswell having two sunsets on one day?”
Mike also sent along some photographic documentation of his field test of his Vantage Pro2’s radio power. He took his console “for a walk.”
“At 500 paces, I quit counting. (I have a three-foot stride.) When the signal was finally lost, I noted the location and then used two different vehicles and came up with 0.5 miles (0.8 km).”
Not done yet, Mike decided to test the standard radiation shield on his Vantage Pro2.
“On July 8, the temperature sensor was reading 104ºF (40ºC). I used an infrared thermometer on the exterior of the shield and found a temperature of 116 to 118ºF (46.7 to 47.8ºC).”
Well, we guess we aced those exams! And our apologies go to Mr. TV Meteorologist, of Roswell. Our Vantage Pro2 owners are getting way too smart for your own good.
Red Robin, Red Robin, Go Away.
After reading last month’s Tech Tips, Jeff Mosher wanted to share an inexpensive, and but rather fun, solution to the ongoing “bird pooh pooh” problem he had with his Vantage Pro2.

“Kind of makes the collector look like Bart Simpson or Dilbert! I just used the cheap wire ties that you can get from the home improvement store.”
Weather Check Quiz Question 4: If you wanted to be twinsies with your wire-tie bird-proofed rain collector, what kind of hair gel should you use?
(Click here for answers.)
On Bird Droppings, Great Minds Think Alike
Peter Drew, of Mebourne, Australia, thought seriously about bird droppings when his station failed to report any rain after a "cats and dogs" downpour. His local distributor suggested using epoxy to glue plastic wire cable ties around the rim of the collector.
As it turned out birds were not the cause of his problem. Instead it was our other fauna-friend, a spider, who had carefully woven a web around the tipping bucket. Oh well, maybe Peter needs to lure a bird to the collector to eat the spider. (Then a cat to eat the bird, and you know how it goes...)
And Hamilton Hicks of Wilmington, NC, wrote to tell that the chicken wire solution has “a very serious shortcoming -- rust. Non-galvanized wire will soon rust, weaken, and deposit ferrous oxide in the bucket mechanism. Galvanized, or painted, wire will provide a better choice.” Thanks, Hamilton!
Weather Check Quiz Question 5: How can a lack of wind cause even more spider trouble than Peter had? (Click here for answers.)
YOU'RE BRILLIANT!:
Answers to Quiz Questions
Question
1:
No. Storm surge is caused by the low pressure at the center of the hurricane. When this low pressure passes over the water, it draws the surface of the water up like a straw. The water piles up harmlessly if the storm is far out to sea, but when the storm makes landfall, the piled-up water is dragged along with it. The high winds contribute to the problem by producing surface waves on top of the surge. The NOAA uses a model called the
SLOSH (Sea, Lake and Overland Surges from Hurricanes) Model l to help predict storm surge. You can also find a good graphic of the miserable effect on
USA Today’s website. ” (Back to stories.)
Extra Credit: Project Cirrus involved seeding a hurricane in an attempt to reduce the wind speed. And no, it did not work very well. The seeded hurricane veered off course and did a huge amount of damage to Savannah, Georgia. It was later decided that the seeding had not caused the storm to change course but that was not much consolation. For an interesting hurricane site, check out
Hurricaneville.com, where there’s also a good history of hurricane-tampering attempts.
(Back to stories.)
Question
2: The “halcyon days” refers to a calm (weather-wise) period just before and after the Winter Solstice. This period got its name from a Greek myth about a couple of young lovers, Ceyx and Alcyone, who really irked the cranky old Zeus. Zeus was so irritated, he sent a huge storm to swamp Ceyx’s ship and drown him. Poor Alcyone jumped in the sea to join her lover in death. But instead of becoming fish food, the couple was transformed into kingfishers who built floating nests. Alcyone’s father, the guardian of the winds, decided that the winds should not blow for those two weeks so that the kingfisher’s nests would be protected. Source: A Guide to Weather, by Burroughs, Crowder, Roberston, Vallier-Talbot, and Whitaker. (Back to stories.)
Question
3: Mt. Waialeale, Hawaii gets an average of 460 inches (1168 cm) of rain per year; in July, 1861, Cherrapunji, India got a total of 366 inches (930 cm) of rain; and over one 12-hour period on February 28, 1964, Belouve, Reunion Island, was drenched with 53 inches (135 cm). So those spots might be good destinations for our contest hopefuls.
(Back to stories)
Extra Credit : Don’t move to Arica, Chile (annual rainfall average: 0.03 inches [0.08 cm]) or Bagdad, California (longest period without rain: 993 days). (Back to stories.)
Question 4: On
RateItAll’s
website, we found rave reviews for Dep Extreme Hold Sport Gel. And according to a poster on
Epinions, you’ve got to try got2b Glued Spiking Gel.
But a poster called ”missleec” offered the best recipe on
MarketingProfs’ website: “Glue. Seriously... go with any strong hold gel and mix it 2:1 with good old Elmer's. Remember those guys in the 80's with the two-foot spiked mohawks? Elmer's was key.” Hey, we’re just reporting it, definitely not recommending it! And you simply must get over your fixation with requiring Weather Check Quiz Questions to have something to do with weather.
(Back to stories.)
Question 5: In his April 2003
Weather Notebook, Bryan Yeaton wrote about a spider problem on a farm in British Columbia. “Lying across Russell Jervis' 60-acre, fenced field was a cluster of tens of millions of spider webs and silks. Responsible for this mess was a small black spider less than half an inch long, called Halorates Ksenius.” The cause? It seems that an unusual lack of wind prevented these guys from dispersing normally. Many spiders use the wind to disperse, and in this case, that still anemometer meant one creepy 60-acre field.
(Back to stories.)
WHO YOU GONNA CALL?
Davis!
Each month after the E-News goes out, we receive messages back.
Sometimes the messages are in response to a story we shared; other
times they are a request for help of some kind. We read all the
emails, answer those we can, and pass the rest on to the appropriate
departments.
We think you
should know, though, that if you're interested in the fastest possible
reply, news@davisnet.com
may not be the best place to send your message. Questions about
how things work should be addressed to tech support directly at
support@davisnet.com.
For general information about the products, such as how much cable
comes with a station contact sales@davisnet.com.
To request a catalog, youll find links for catalog requests
on our web site at http://www.davisnet.com/contact/catalog.asp. Please continue
to send your comments, weather URL's, and story suggestions to news@davisnet.com.
We look forward to getting your comments and any responses you have
to the E-News. Member participation is what keeps the E-News alive
and kicking.
Well, thats
it for this edition. Youll be hearing from us again next month!
Vantage Pro2,
Vantage Pro2 Plus,
Vantage Pro,
Vantage Pro Plus, Weather Monitor, Weather Wizard, WeatherLink, Weather Envoy, and Perception
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