Aug 252013
 
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One of the concerns I mentioned with tropical storm Ivo is that clouds can prevent solar heating. Solar heating drives the imbalance and lift, which forms our thunderstorms. We will get significant rain today, but probably not significant thunderstorms. This is from the forecast
discussion at the National Weather Service.

.DISCUSSION…IT IS BECOMING EVIDENT THAT MUCH OF THE CWA WILL HAVE
EXTENSIVE CLOUD COVER AND A RAIN-COOLED BOUNDARY LAYER TODAY. THIS
IS A BIG PROBLEM FOR CONVECTION AND THE DOMINANT PRECIPITATION TYPE
WILL LIKELY BE STRATIFORM RAIN AND DRIZZLE. EMBEDDED IN THIS RAIN
WILL BE POCKETS OF HEAVIER PRECIPITATION AS WEAK DEFORMATION AND
SHEAR DEVELOPS…ALONG WITH CONTINUED WEAK INSTABILITY. MODIFIED
SOUNDINGS SHOWING A MOIST-ADIABATIC PROFILE…SO DEEP AND VIGOROUS
INSTABILITY SHOULD NOT BE EXPECTED. WITH MODERATE SOUTH-SOUTHWEST
FLOW…THERE WILL BE A POSSIBILITY OF TRAINING ECHOES. SO DESPITE
THE LACK OF LARGE STORMS…RAINFALL WILL ADD UP HERE AND THERE…AND
LOCALIZED AREAS OF FLOODING WILL STILL BE POSSIBLE. THE FLASH FLOOD
WATCH WILL REMAIN IN PLACE.

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