WKU Meteorology

outside of any scattered storms this weekend will continue to be hot and humid with highs in the low 90’s and dewpoints in the 70’s making it feel near or over 100. allow extra caution if outdoors.

heat index values both at the mesonet site and at the airport have been running in the 95-100 range this afternoon. This is thanks in large part to a very moist atmosphere( dewpoints in the mid 70’s) and temps getting close to 90. should the region not see any pop up storms today heat index values by late afternoon could easily top 100. excercise caution if you have to be outside for long periods today.

Updated weekend forecast 6/9/10

1. Leftovers of the front dying out over the region today will lift northward throughout the week allowing for more muggy and hot air to stream back north into our region. However this will allow for a chance for pop up afternoon storms as well. These storms may produce locally hvy rains. I expect highs to be near 90 or in the low 90’s  throughout the region each day through Saturday.

2. By Sunday and Monday the next cold front approaches with a higher chance of storms and slightly cooler weather by Sunday night.

this from the nws….

RECORD EVENT REPORT
NATIONAL WEATHER SERVICE LOUISVILLE KY
532 PM EDT FRI JUN 4 2010

…RECORD DAILY MAXIMUM RAINFALL SET AT BOWLING GREEN…

A RECORD DAILY RAINFALL OF 2.54 INCHES WAS SET AT BOWLING GREEN
TODAY. THE OLD RECORD OF 2.15 INCHES WAS SET IN 1893. TODAYS RAIN
FELL IN ONLY ONE HOUR AND 20 MINUTES TIME.

It’s just Ironic an update is needed only hours after issuing a two week forecast, which is still below on the last post. This further lessens the chance of a late summer drought.

Here is an overview of the expected weather the next two weeks. If severe weather is expected ( most likely middle of next week if at all) or the tropics become more active another update may be needed before the end of this forecast. Also you can scroll down to previous posts on my summer forecast and a recap of the field methods class tracking storms in the plains.

The same frontal boundary which has been in place since Wednesday will again be the trigger for scattered to numerous thunderstorms late this afternoon and evening. LI values are in the extremely unstable range near -10 just east of Bowling green  and cape values near 3000 which are even more favorable for severe weather than they were Wednesday. Any storms that develop today although more scattered than Wednesday  will have the threat to produce hail and gusty winds across the region.

Spc discussion:

DISCUSSION…THUNDERSTORMS HAVE DEVELOPED ALONG A ZONE OF WEAK
   CONVERGENCE IN NERN AR/WRN TN AND ARE EXPECTED TO DEVELOP NEWD INTO
   SRN KY. STRONG INSTABILITY COMBINED WITH STRONGER WINDS ALOFT WILL
   LIKELY RESULT IN STORMS WITH SEVERE HAIL…LOCALIZED DOWNBURSTS AND
   HEAVY RAINFALL.

link to radar

http://radar.weather.gov/Conus/centgrtlakes.php

I’ll pass along any warnings or thoughts in the comments section

The second mcs to our northwest has refired this afternoon to produce numerous thunderstorms just to the northwest of our region. These storms are developing rapidly this afternoon and will continue to slowly move southeast into the Bowling Green area by early evening. Large hail, gusty winds and hvy rains are possible with these cells. The best chances will be from 4 and 7 pm ct for storms.

radar

http://radar.weather.gov/Conus/centgrtlakes_loop.php

spc discussion

   DISCUSSION…WITH A VERY UNSTABLE AND VIRTUALLY UNCAPPED AIR MASS
   ACROSS THE WATCH AREA…THUNDERSTORMS ARE INCREASING RAPIDLY IN
   INTENSITY AND NUMBER. WITH ONLY 20-30 KT OF SHEAR…PULSE SEVERE IS
   PRIMARY THREAT INCLUDING LARGE HAIL AND DAMAGING DOWNBURST WINDS.
  

I’ll have more in the comments section as these storms move closer.

Our mcs thunderstorm complex worth watching dissipated overnight but is still bringing some thunderstorms to northernKentucky this morning. This boundary should stay north of Bowling Green today which means we’ll have to wait fro the next mcs along the same front to bring a chance for some storms. The second mcs to form along the front is over central Missouri now, right now I’d have to say it is less intense severe wise than the first one was last night and will likely weaken this morning as it moves east into the Missouri valley. Eventually this complex may strengthen do to the heat of the day and a moderate to large degree of instability, cape from 700-2700 and a  LI from -4 to -6 modeled  over the mid south and lower Ohio valley this afternoon and evening thus the storm prediction center has a slight risk for severe storms just to the north of BowlingGreen. The chances for severe weather today through Thursday will be closely monitored here and by the stormtoppers, please check back for more updates.

A large complex of severe storms has formed to our north and west with numerous warnings for large hail and 70 mph winds. Thunderstorm complexs like this one are fast movers and can cover a lot of area in just 10 hours or so. This complex is moving to the east and southeast about 50 mph and is currently over northern Missouri. I think this has a shot of making into Kentucky around or shortly after dawn. This thunderstorm complex will likely weaken some but still could produce hvy rains, gusty winds near severe levels and hail. As of now I would say we have a 45% chance of being impacted by this thunderstorm complex for the morning rush.

radars

check out the stormtoppers site for overnight updates.