Storm Center Update – Sunday AM May 19


From the overnight – a Winter Storm Watch has been issued for the Black Hills. This was issued for expected heavy snow and goes into effect Monday evening and will expire late Tuesday night.

In addition to the Winter Storm Watch, the northeast counties will be under a Freeze Warning tonight with adjacent counties under a Frost Advisory. Both are issued for overnight lows dipping into the low to middle 30s. 

Today is looking like another cloudy day in KELOLAND. Lingering light rain should last through the morning but come to an end in the afternoon. New rainfall amounts should be light, amounting to less than an quarter inch. Colder air will be in place over the region so highs today will be mostly in the 40s. These cold highs may set records for coldest afternoon highs for today.

After the rain comes to an end this afternoon, clouds will begin to thin out this evening and we should really see some clearing in eastern KELOLAND overnight. But as that is happening, another round of rain will begin to move into southwestern South Dakota. Temperatures tonight will bottom out in the 30s again.

That next round of rain will continue to move into KELOLAND tomorrow. High temperatures will be below-normal again with highs in the 30s in the west, to 40s and 50s in central and east KELOLAND. Again, folks around the Black Hills may get a mix of rain and snow with accumulating snow likely Monday night.

The rain will be widespread across the area Monday night into Wednesday morning. Total rainfall amounts will be significant with the southern counties getting another one to two inches of rain with isolated amounts up to three inches. Amounts will dwindle down to about a half inch to one inch in the northern counties. Highs on Tuesday and Wednesday will still be below normal, reaching the 50s to 60s for most of the area but the west will be a little cooler.

Temperatures look to slowly warm to the 60s to near 70 by next weekend. We could see more rain late Thursday and Thursday night but the uncertainty in the models is still high so we’ll need to watch it closely. How quickly Tuesday/Wednesday’s rain exits will affect whether or not we see rain Thursday.

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