Forecast quandaries confronting NWS-Nashville tonight include (1) a meandering weak summertime surface frontal boundary, (2) convective boundaries from previous day’s convection, (3) differential diurnal heating aspects per cloud coverage breaks, and (4) shortwave passages in developing northwesterly flow pattern aloft.
More Rain & Thunderstorms
Cloud cover is keeping temps from rising into the 90°s. Today’s high is 87°.
Current Official Hourly Observation (taken at :53 on the hour)
Rain and thunderstorms are expected to arrive this afternoon from West Tennessee, but it appears they are diving to the south of us.
Update on Rain Tonight, Tomorrow, & Saturday
Rain is still expected tonight.
Current Official Hourly Observation (taken at :53 on the hour)
Current Radar Loop
Obviously, rain is approaching. You can see the main rain blob pretty clearly, but showers developing ahead of the blob are possible before dark.
Here Comes a Lot of Rain
It’s hot.
Current Official Hourly Observation (taken at :53 on the hour)
Today’s high is 95°. Mid/Upper 60°s dewpoints are sending the heat index to 98°, in the shade.
Rain is on the way, to relieve official “abnormally dry” conditions in N Davidson Co:
“Looks like it’s gonna clabber up . . .”
Before we even look at the current temp, I need to clear something up, via run-on-sentence (look away, Mrs. Rich, my 7th grade grammar teacher). Has to do with weather and the south.
I was watching a video titled *cough* “Things” Southern Women Say (made by Southern Boyz Outdoors via Facebook), which I shall not link herein because this is a family show, but anyway, at the 0:51 mark, a southern lady suspicious of gathering clouds and a pending rainstorm said:
Frizzy Hair Alert!
Current Official Hourly Observation (taken at :53 on the hour)
Hot (high 93°) and dry today. If you’re planning to go to the fair . . .
. . . do it Tuesday night! Because Wednesday. . .
Hot Now, Rain Later This Week, & Awful Jokes. Truly Awful.
Current Official Hourly Observation (taken at :53 on the hour)
Monday & Tuesday
We will be hot, but unseasonably not-too-humid under mostly sunny skies with highs topping out in the lower 90’s.
When You Should Go To The Fair
Current Official Hourly Observation (taken at :53 on the hour)
From Sunday through Wednesday morning:
- there’s a 0% chance of rain.
- high temps will be in the low 90s.
- it’ll be hot, but humidity won’t be terrible.
Starting Wednesday afternoon, the humidity will worsen, and continue to worsen into Friday and Saturday. As this happens, the chance of an afternoon shower/thunderstorm will return. Typical August.
The 90s Return
Current Official Hourly Observation (taken at :53 on the hour)
Water vapor imagery shows Saturday afternoon rain and storms firing up over SE Middle TN and N Alabama:
Those are drifting ESE. We should remain dry, although it’s possible we’ll see another shower today (we saw one around noon in SE Williamson Co.; it slowly dissipated). Here’s the HRRR loop from 3 PM until Midnight Saturday:
Will It Rain This Weekend?
Current Official Hourly Observation (taken at :53 on the hour)
Current Radar Loop
Today – Mostly Sunny – High 88
Another cooler-and-drier-than-normal day is on tap. Even though there’s a trough of low pressure sitting on top of us, it lacks moisture. The most we will see is a sprinkle or two.