Thursday, May 10, 2012

May 11th Severe Weather Outlook!

severe

May 11th Severe Weather Outlook
Temperatures across the region mainly in the 70s
http://www.twisterdata.com/data/models/nam/221/maps/2012/05/10/18/NAM_221_2012051018_F30_TMPF_2_M_ABOVE_GROUND.png
Dew points are in the 60s
http://www.twisterdata.com/data/models/nam/221/maps/2012/05/10/18/NAM_221_2012051018_F30_DPTF_2_M_ABOVE_GROUND.png
CAPE 500 to about 2000 depending on where you are located..
http://www.twisterdata.com/data/models/nam/221/maps/2012/05/10/18/NAM_221_2012051018_F30_CAPE_SURFACE.png
LIFT INDEX 0 to about -4
http://www.twisterdata.com/data/models/nam/221/maps/2012/05/10/18/NAM_221_2012051018_F30_PLI_30_0_MB_ABOVE_GROUND.png
EHI is non existent across the severe zone
http://www.twisterdata.com/data/models/nam/221/maps/2012/05/10/18/NAM_221_2012051018_F30_EHI_1000_M.png
HELICITY is also non existent across the severe zone
http://www.twisterdata.com/data/models/nam/221/maps/2012/05/10/18/NAM_221_2012051018_F30_HLCY_1000_M_ABOVE_GROUND_0_M_ABOVE_GROUND.png
SHEAR is 35 knots +
http://www.twisterdata.com/data/models/nam/221/maps/2012/05/10/18/NAM_221_2012051018_F30_SHRM_500_MB.png
If you are in TX and you are not in the severe zone this does not mean that you will be precipitation free but you will experience heavy rainfall and perhaps even garden variety thunderstorms but the greater emphasis will be on heavy rain..
The weather system responsible for the severe weather potential and the heavy rain is an Upper Level Low that you can see spinning on satellite..
http://www.ssd.noaa.gov/goes/comp/ceus/flash-vis.html
Time sensitive above as the sun is going down. With the EHI and Helicity practically non existent the severe threats will be mainly wind, hail and heavy rains!

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