Here's a 10-day Time/Height series of North Myrtle Beach Relative Humidity according to 00Z GFS guidance. 90%+ RH is sparse; deep moisture as well. Are the best rainfall chances later tomorrow and next Monday/Tuesday? This Heat Chart or Scalar Field Chart elegantly yet

Oh yes! Here in Little River at the NE corner of the Grand Strand, it's 9 degrees cooler than 24 hours ago; 79° → 70°. I and North Myrtle hit the jackpot! I'm treasuring the moment!

Good grief Charlie Brown...Watch the 70°F isotherm ascend to the 850 mb level on Saturday and remain through Thursday. Now, that's a protracted heat wave! Finally, the 70°F isotherm plunges. Now, that's blessed relief!

According to 06Z GFS guidance, overnight Friday/Saturday, the 70°F isotherm plunges from 850 MB to 1000 MB; offering abrupt, welcome relief. We can't wait! [How dare I use the Imperial System!]

Here, in July, daily highs very much want to be in the mid/high 80's. The rectangle on the box plot contains the middle 50% [85°→89°]. This past weekend's mid 90°'s are Outliers, at the nose of a 5-day heat wave (aka Acute Warming Event). Happily, I was in Boston when this

Join me in singing the beautiful early 20th century spiritual hymn "Oh Lord, What a Morning" as we celebrate the chilliest morning here on the Grand Strand in exactly two months! Enjoy your Sunday!

Blue blotches indicate relative humidity > 90%; aka impressive moisture. The best chance for significant rainfall is next Sunday when moisture is very deep & we likely have nimbostratus. With DataGraph, it's fun & easy to squeeze 3 dimensions; Time/Height/RH into 2!

Here's a funky & indirect route to express temperature trend over the next 9 days using the notion of Cooling Degree Degrees = Mean Temperature - 65°. According to 1Z GFS guidance, we stay pleasant thru Tuesday; thereafter, abruptly back into the soup & high electric usage!

With yesterday's 2.02", and a year to date 1.67" surplus, suddenly & finally Little River's in positive territory! It took 217 days, but well worth the wait. Early May, we were over 5" in arrears.

Here are January & July 2025 daily (Highs, Lows) plotted on a plane. How densely packed are July's. Yet, January's are far & wide. Think Polar Jet ever so near in January vs far, far to our north in July. Ed Piotrowski Jamie Arnold WMBF

I love to draw sea level pressure traces. From Thursday thru Tuesday, the atmosphere's in exquisite equilibrum, with pressures within a .05" range! Thereafter, Erin, although 100's of miles to the east, makes her circulation known. Here's hoping such an OTS scenario verifies!

See the subtle 24-hour temp change pattern across Eastern SC. To emphasize Frequency Distribution, I had fun drawing the ubiquitous Violin Plot. With Average ΔT = +.4, it's just a smidgeon warmer now. Either a ΔT = -4° or +6° anywhere on the real estate is highly unlikely.

A rain-day is assigned 100%; rain days 0%. Gray bars are 2025 to date rain-free spans. DataGraph muscles thru an 8th degree polynomial equation curve fit. Then it identifies 3 maxima/4 minima. The best chance of rain-fee was April 13. The Lowest probability was August 11.

Per 06Z GFS guidance, Erin makes her presence known on this pressure trace. Very early Thursday morning, at her closest pass, the Box Plot frequency distribution chart signals an Outlier from the central tendency. Even many hundred miles to the east, she's something special!

An impressive pressure gradient early tomorrow morning as Erin makes her closest pass to North Myrtle Beach. GFS thinks a tad breezy...~2 miles per 1/100 inch not too shabby!

I calculated daily mean temperatures for the next 10 days using GFS deterministic model guidance. Look at mid-next week & the following Monday. With departures -6°, we'll think it's the end of September...Bravo!

Lines of constant dew point temperature are called Isodrosotherms. The 65° & 70° lines helped me locate the wavy front at 6 AM. The black dashed curve splits the difference and there it is!

Here, I'm trying to sharpen my graphic skills. A week from tomorrow a quaint, cunning non-tropical low (contours are not circular!) lurks to my southeast. Apparently, this is the most excitement I'm able to glean from this GFS guidance.