MESONET TICKER ... MESONET TICKER ... MESONET TICKER ... MESONET TICKER ... March 31, 2016 March 31, 2016 March 31, 2016 March 31, 2016
TORNADOES...WE GOT YOUR TORNADOES HERE!
Way too preliminary on the tornado reports and rest of the severe weather, but Tulsa got pounded last night by several twister touchdowns. According to the Tulsa World this morning, at least seven were injured in Tulsa, Mayes, Nowata and Rogers counties. Several thousand were left without power as well. Other storms dumped torrential rainfall, large hail and high winds from south central Oklahoma up through the NE corner of the state. Here's a look at the PRELIMINARY storm reports from SPC for yesterday.
http://ticker.mesonet.org/archive/20160331/march30-storm-reports.png
According to those storm reports, tornadoes touched down 4 miles north of Tulsa, 2 miles S of Owasso, 3 miles N of Catoosa, and 3 miles SE of Claremore. There was at least one tornado warning for McCurtain County as well, but I have yet to see a report of a tornado from that one. Doesn't mean one didn't touch down, of course.
The Tulsa NWS office will be conducting storm surveys to determine how many distinct twisters touched down, including other info like EF-ratings and straight line wind damage paths. Until then, all info should be considered preliminary.
Now the rain that fell with the storms was badly needed in some parts, and it was definitely hit and miss according to Mesonet totals. Over an inch fell in narrow swaths, generally east of I35, although most amounts indicate a half-inch or less owing to the speed of the storms. They just moved out too fast to dump too much rain, and where too "lined out" to be more widespread.
http://ticker.mesonet.org/archive/20160331/rainrfc.48hr.png
That might help mitigate some new colors on the latest U.S. Drought Monitor map released just this morning that shows a 5% increase in Moderate (D1) drought and a 15% increase in abnormally dry (D0) conditions. Please remember once again that the D0 designation is NOT a drought category, but a precursor to drought (or in some cases, a drought that is fading).
http://ticker.mesonet.org/archive/20160331/20160329_OK_cat.png
Not surprisingly, most of that D1 is contained in the NW quarter of the state where the dearth of moisture since the beginning of the year is really starting to add up.
http://ticker.mesonet.org/archive/20160331/cal-stats.png http://ticker.mesonet.org/archive/20160331/caltot.png http://ticker.mesonet.org/archive/20160331/caldel.png http://ticker.mesonet.org/archive/20160331/calpct.png
And much of that area spent yet another day with high fire danger conditions, conditions which exacerbate drought intensify. Wind gusts of 30-50 mph were reported across that area of the state to go with relative humidity values in the teens at best. That can really suck the moisture right out of the soil and damage crops and vegetation.
http://ticker.mesonet.org/archive/20160331/yesterday.gust.gif
As for the near future, options for rain look bleak. The 7-day rain forecast shows Oklahoma in a moisture donut hole.
http://ticker.mesonet.org/archive/20160331/7day-rain-forecast.gif
Maybe some help as we get into the second week of April where the CPC 8-14 day outlooks indicate increased odds of above normal precip, but also temps, which won't help drought matters.
http://ticker.mesonet.org/archive/20160331/814prcp.new.gif http://ticker.mesonet.org/archive/20160331/814temp.new.gif
There are indications of a possible wet second half of April, which would do wonders for the northern half and SW quarter of the state. But that forecast coming to fruition is a wish at this point. Let's cross that bridge when we come to it.
Gary McManus State Climatologist Oklahoma Mesonet Oklahoma Climatological Survey (405) 325-2253 gmcmanus@mesonet.org
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