When watching a thunderstorm to the north of the KDIX radar, I noticed rapid changes in the ProbWind values. Radar interrogation didn't indicate anything severe and generally weak outflow from the storm. It appears that these values were tied to the subtle changes in the LLAzShear that only changed by around 0.01 at times. Here are a few screenshots:
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| 2142Z |
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| 2144Z - Group splits, which is reasonable based on the multicell nature on reflectivity. |
ProbWind on the previous scan was around 57% after the split.
With no significant change in the values, the ProbWind increases to 71% and likely due to the slight increase in LLAzShear.
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| 2146Z |
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| 2150Z - The ProbSevere data is grouped back together and increases to 85%. |
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| 2152Z - Storms separate again. |
This transition highlights some concern in the ProbWind values with the rapid fluctuations seen. Today's storms have been generally lower topped and we have seen brief and rapid increases and decreases in the ProbWind values.
-GOB
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