Boulder, Colorado Weather: 7/31/18

Yesterday, the weather was perfect.  I did not even touch my car- I walked everywhere.  We even went for a night hike in Chautauqua.

This morning has been sunny, mild and still.

The NWS in Boulder, CO, forecasts a sunny day, with a high temperature of 83 F.  The winds will be from the east at 5 mph.  This evening will be partly cloudy, with a low temperature of 60 F.  The winds will be from the east northeast at 5 mph, becoming light and variable after midnight.

The visible satellite image shows very few clouds in the Denver Metro area.  This image has been excluded from today’s post.

The 12 Z upper air sounding from Boulder shows that the atmosphere has dried out from the past week.  There was 0.46 inches of precipitable water present in the column.  There was no Convective Available Potential Energy (CAPE) and no Convective Inhibition (CINH).  The Lifted Condensation Level (LCL) was 595 m.  There was no thermal inversion near the surface, and the 0-3 km average lapse rate was 4.4 C/km.

The hodograph shows that there was 3 kts low-level shear (due mostly to directional changes) and 52 kts deep-layer shear (due mostly to speed changes).

The surface observations (from the SPC Mesoscale Analysis Map) show mild temperatures and a dryline that runs just east of the I-25 corridor.   The skies are clear and sunny over most of the state, and the winds are light and variable.

The surface pressure chart shows that there is high pressure over southern Colorado today, but that there are no strong pressure gradients over the state this morning.   The RAP shows that the pressure will drop with diurnal heating, but no strong pressure systems or gradients are expected over the next six hours.

The NAM 250 mb chart shows moderate, northerly flow over the state today as we enter an upper-level ridge.

The HRRR simulated reflectivity shows no precipitation in the Denver Metro area today.  This image has been excluded from today’s post.

The HRRR predicts that the high temperatures for Boulder will peak in the mid-80’s F by 22 Z.

The HRRR dewpoints will slowly drop as the dryline moves east across the state.  By mid-afternoon, the dewpoints will be in the 30’s F.

The HRRR shows no strong wind gusts.  This image has been excluded from today’s post.

The HRRR shows clear skies all day and into the evening.  This image has been excluded from today’s post.

Today will be quite pleasant.  A fine last day for the Summer Science Program.

Thank you for reading my post.

The forecasts from the National Weather Service are from The NWS Homepage
The upper air soundings and mesoscale analysis plots are from the Storm Prediction Center website.
The satellite data, model data, and forecasted soundings are from College of DuPage – SATRAD

About highplainschasing

This blog is about my tales in storm chasing. My name is Seth Price and I am an instrumentation instructor at New Mexico Tech. My amateur radio call sign is N3MRA.
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