Mallow Posted March 6, 2011 Share Posted March 6, 2011 For Portland... The record highest rainfall on August 4th is 0.04", set in 2004. The runner-up is July 23rd, whose record is 0.06", set in 1959. And finally, third is August 8th, whose record is 0.08" set in 1985. A thunderstorm on any of those days would smash the daily record rainfall. Link to comment Share on other sites More sharing options...
Chicago WX Posted March 6, 2011 Share Posted March 6, 2011 No surprise that the lowest daily record high precip days around here occurred in the cold season. Here's the top 3 for LAF and Chicago. LAF (I'll use the WL COOP which has data going back to 1901) Feb 8, 1901: 0.55" Dec 26, 1949: 0.57" Dec 16, 1940: 0.59" Chicago Dec 25, 1950: 0.50" Feb 29, 1976: 0.55"* Jan 16, 1885: 0.56" Nov 15, 1927: 0.63" Link to comment Share on other sites More sharing options...
uncle W Posted March 6, 2011 Share Posted March 6, 2011 five dates for NYC with less than 1" for the record...since 1869 0.86" 5/25/1927 0.86" 9/9/1902 0.89" 4/30/1963 0.91" 4/29/1909 0.91" 2/8/1890 Link to comment Share on other sites More sharing options...
WVclimo Posted March 6, 2011 Share Posted March 6, 2011 At Martinsburg, WV it looks like February 28 from this chart: Link to comment Share on other sites More sharing options...
RodneyS Posted March 7, 2011 Share Posted March 7, 2011 For Washington, DC, it appears to be February 5, at 0.80 inches. However, I think a better measure of driest day is average rainfall for the historical record. By that measure, October 11 in DC is the driest, at 0.05 inches per day, with February 5 at 0.09 inches trailing several days. Similarly, October 11's maximum of 1.10 inches exceeds a few other days. On another thread, I've raised the issue of why precipitation in DC has varied so much on two nearby August days -- 0.33 average on August 12 vs. 0.09 average on August 15; see http://www.americanw...-washington-dc/ Link to comment Share on other sites More sharing options...
aslkahuna Posted March 7, 2011 Share Posted March 7, 2011 There are quite few days down here where NO rain has fallen during the period of record (back to 1895) most of them occurring during the period of late April into mid June. Steve Link to comment Share on other sites More sharing options...
Mallow Posted March 7, 2011 Author Share Posted March 7, 2011 There are quite few days down here where NO rain has fallen during the period of record (back to 1895) most of them occurring during the period of late April into mid June. Steve That's pretty amazing. I knew some areas (Atacama desert) had days with no rain in their entire period of record, but I didn't realize that would be the case in AZ. Link to comment Share on other sites More sharing options...
icebreaker5221 Posted March 7, 2011 Share Posted March 7, 2011 There are quite few days down here where NO rain has fallen during the period of record (back to 1895) most of them occurring during the period of late April into mid June. Steve I think you're looking at the daily normals, which DO have a few 0.00s in there. But, there are no days with 0.00" in daily extremes. http://www.wrh.noaa.gov/twc/climate/tus.php Link to comment Share on other sites More sharing options...
RodneyS Posted March 7, 2011 Share Posted March 7, 2011 I think you're looking at the daily normals, which DO have a few 0.00s in there. But, there are no days with 0.00" in daily extremes. http://www.wrh.noaa....climate/tus.php Looking at the Tucson daily extremes table, it appears that April 26 has come the closest to no rain at all, with the maximum having been 0.03 inches. Link to comment Share on other sites More sharing options...
Mallow Posted March 8, 2011 Author Share Posted March 8, 2011 Looking at the Tucson daily extremes table, it appears that April 26 has come the closest to no rain at all, with the maximum having been 0.03 inches. Yep. The 0.04" at PDX looks mighty impressive comparatively, but to be fair, the TUS records go back to the 1890s, whereas Portland's only go back to the 1940s. Link to comment Share on other sites More sharing options...
aslkahuna Posted March 8, 2011 Share Posted March 8, 2011 That's pretty amazing. I knew some areas (Atacama desert) had days with no rain in their entire period of record, but I didn't realize that would be the case in AZ. Only in Southern AZ and mostly in the Desert. Then there's Bagdad CA which went 700+ days without any rain. BTW you might be interested to know that the latest issue fo Weatherwise has an article about the tornado history of Oregon. Steve Link to comment Share on other sites More sharing options...
Mallow Posted March 8, 2011 Author Share Posted March 8, 2011 Only in Southern AZ and mostly in the Desert. Then there's Bagdad CA which went 700+ days without any rain. BTW you might be interested to know that the latest issue fo Weatherwise has an article about the tornado history of Oregon. Steve Really? I mean, we've had a few big tornadoes, and a lot of smaller ones (usually in winter), but we don't really have much in the way of "tornado history". Except April 1972. Then again, the tornado which struck 'downtown' Aumsville, OR this past winter was pretty impressive for a Western Oregon twister. Link to comment Share on other sites More sharing options...
aslkahuna Posted March 8, 2011 Share Posted March 8, 2011 Really? I mean, we've had a few big tornadoes, and a lot of smaller ones (usually in winter), but we don't really have much in the way of "tornado history". Except April 1972. Then again, the tornado which struck 'downtown' Aumsville, OR this past winter was pretty impressive for a Western Oregon twister. From the late 19th Century to the present, there are 146 documented tornadoes that have occurred in OR according to the article. Steve Link to comment Share on other sites More sharing options...
Mallow Posted March 8, 2011 Author Share Posted March 8, 2011 From the late 19th Century to the present, there are 146 documented tornadoes that have occurred in OR according to the article. Steve Sounds about right. We seem to average about 1-2 a year, mostly EF0-EF1. Link to comment Share on other sites More sharing options...
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