Jared W. Smith

Base reflectivity image of a severe thunderstorm over Hilton Head Island on July 10, 2010.

This severe thunderstorm, referred to as extremely dangerous by the Charleston National Weather Service, was about as intense as advertised, and was quite a scare for one driver, as this NWS storm report illustrates (emphasis added):

CHS: 1 W Hilton Head Island [Beaufort Co, SC] law enforcement reports TSTM WND DMG at 05:34 PM EDT — large oak tree fell on car at intersection of jenkins island road and hwy 278. driver uninjured.

Yeesh. Glad the driver’s OK. Here’s a roundup of today’s storm reports — was a windy one out there on Tybee Island.

Severe weather season roars back to Charleston today. I’m in “hunker down” mode here, monitoring all sorts of varying weather information. Here’s how to keep up:

• On Twitter, I’ll live-tweet the storm event at @chswx. If you just want warnings and forecasts, I recommend @CharlestonWX. Also see @weatherwatches for advance notice of potential watches. Don’t forget local media, as well, including Rob Fowler, Josh Marthers, Joey Sovine, and the Live 5 Weather Team.
• I’m uploading radar images periodically to radar.charlestonwx.com. There’s an animation script which gives you 10 frames and many Level III products to play with.
• If time permits, I’ll do some writing with more detailed analysis at my new weather blog. Given the fast pace of these storms, blogging may be somewhat prohibitive. (It’s much easier to blog a hurricane than it is a springtime weather event.)

Despite all this technology we now have, your best defense is to have a NOAA Weather Radio and make sure to heed all warnings that come down from the National Weather Service or other emergency management officials. Remember, the Internet is a great tool, but is not intended for life-or-death decisions. Stay safe out there!

We in Charleston have reverted back to October, apparently. If you’ve stepped outside, you’ve undoubtedly noticed the return of warm, mid-70s temperatures, Charlestonian humidity and a familiar urge to dodge mosquitoes. Funk-nasty. This is happening thanks to a system pumping a very warm southerly flow into the area.

Well, this sort of thing doesn’t last too long in December, and typically, these temperature differences resolve themselves with force. A fairly potent storm system is sweeping through the middle of the country, causing plenty of problems with severe weather across Texas and into Mississippi and Alabama. So, as you might expect, we’ve got a slight risk of severe weather tomorrow, which primarily hinges on how much sunshine peeks through before the front arrives. In fact, the outer portions of the storm are showing up on radar.

So, keep an eye out during the day tomorrow — it could get a little rough at times. It’ll be through by Friday, and we’ll get back into upper 50s for highs (though the lows aren’t currently projected to be as low as they have been, which is good for my getting up on time). One thing is for certain, this late fall has been anything but normal; we just can’t seem to figure that out this time around.

Who knows what kind of soggy mess we’re going to see when day breaks tomorrow — I can imagine it’s going to be pretty bad for folks at Northwoods Mall and in the Shadowmoss subdivision. My buddy Tom called and said he had to try three different ways to get in before he could actually access his house near the golf course. He said he saw a river running through the cartway.

Well, rivers generally begin running after ridiculous storm totals like these, which just came over the wire from the National Weather Service.

Public Information Statement
Statement as of 12:48 PM EDT on October 25, 2008

The following are unofficial storm total rainfall amounts for the
last 24 hours ending at midnight EDT Saturday.

…South Carolina…
Beaufort 2 N 4.54
Beaufort mcas 3.67
Bennetts Point 4.11
Charleston Airport 6.57
downtown Charleston 5.23
Dorchester 4.96
Goose Creek 4 se 6.74
Hardeeville 7 S 3.62
Hardeeville 13 S 4.17
Huger 3 NNE 6.58
McClellanville 6.41
short stay 3.13
west Ashley 5.62
Witherbee 6.10

Here’s hoping that in the end people are minimally impacted, but tomorrow morning will provide the grim details of the aftermath of today’s record rainfall.

Midday update: The Digitel says Ashley Ave. downtown is still underwater this morning. Having lived there for several years, I’m not surprised in the slightest.

Heavy rains have inundated Charleston most of the day — mix that with a high tide enhanced by an onshore wind, and you have trouble.

This is one Friday night to stay inside. The roads are at best an inconvenience; at worst, they are potentially deadly. Floodwaters are still rising throughout the area as heavy rain continues to pound Charleston. Lots of places are underwater and threaten to become impassable this evening, including:

• Calhoun at Ogier St, Downtown
• Vanderhorst at Smith St, Downtown
• Spring St. past Crosstown, before Ashley River bridges
• Start of Highway 61 just off Ashley River bridges (West Ashley)
• Highway 61 just north of Sam Rittenberg before Paul Cantrell Blvd. (West Ashley)
• Highway 61 between Tobias Gadson Rd. and Magwood Rd. (West Ashley)
• Long Point Road between 17N and Whipple Rd. (Mt. Pleasant) (thanks to Chad Norman)
• Market, Concord, and Hazel St. Downtown (NWS)
• Many streets in the Shadowmoss subdivision (West Ashley) (NWS)
• Main Road and Hwy. 17 in James Island (passable) (NWS)
• Many roads in Summerville (NWS)
• River Road on James Island (NWS)
• Hwy 17 and Orleans Road impassable in West Ashley (NWS)
• Reports of cars floating in Northwoods Mall parking lot, 2 feet of water in stores (Storm Team 2)
• All of East Bay south of Mount Pleasant Street (Ken Hawkins/The Digitel)
• Grove & Simons at Rutledge (Downtown) (Janet Edens Conover)

Spotters in Goose Creek have measured nearly 7″ of rain since midnight at Charleston Southern University. Similar reports of over 6″ of rain in West Ashley have been recorded, and that was a couple hours ago; I suspect the area will receive upwards of 7″ to in some areas approaching 8″ of rain before this is all said and done. The College of Charleston weather station has recorded nearly 5.5″ of rain as of 10:51 PM.

Update 10:46 PM: Eugene Mah sends this blog along, complete with a photo of his backyard which has got a bit of a river going through it at the moment. Also, here’s an incredible flooding picture from ABC News 4.

Update 11:11 PM: Rob Fowler reported over Twitter that I-26 into Downtown at Cosgrove is being closed.

Update 11:32 PM: We have absolutely shattered the official rainfall record for today at the airport with 6.54″ of rain. The record, which stood for exactly a year, was like 2.32″ or something.

Update 11:34 PM: Dan Tennant tweeted this picture of him standing in his yard. Yikes!

Update 11:35 PM: “Notoriously Nice” Mike Courtney sends along this photo from his backyard in Shadowmoss. Shadowmoss is in extremely bad shape tonight — big problems on the golf course.

A Flash Flood Warning is in effect for most of the Charleston metro area until 2:15 AM. I cannot reiterate this enough, but tonight is not a good night to go out. Stay indoors and off the roads; they are deadly. If you must drive — and there aren’t a lot of places to safely do that — be very careful of floodwaters and turn around, don’t drown. You can’t tell how deep they are, especially at night.

I’ll update this list through the night. Contact me over Twitter using @chswx or send e-mail to weather@jaredwsmith.com with any flooding reports you may have — I’ll relay them over Twitter and update this list. Also watch Twitter for any video updates I may do through the evening (I’ve done one already and will likely do at least one more).

A fairly spring-like and potentially damaging weather event seems to be coming together for tomorrow. A really potent disturbance is making its way through the South, firing off some severe weather including tornadoes. We’ll be seeing that tomorrow — yes, with a threat of tornadoes — as well as a chance for some extremely high winds (some reaching up to 45 to 50 MPH 35 to 40 MPH at times even outside of thunderstorms, mostly in coastal areas). We’ve currently got a High Wind Watch for areas along the coast, and that could be bumped to a warning if the pressure gradient does indeed tighten the way forecasters expect it to. As expected, the Storm Prediction Center has us in a “slight” risk of severe weather tomorrow, so definitely keep an eye out to the skies and be ready for the unexpected. With the risk of high winds tomorrow, it may not be a bad idea to pull some loose stuff in tonight.

My day job has me sequestered in training for most of the day, but I’ll pop in during breaks in case something occurs.

UPDATE: The High Wind Watch was downgraded to a Wind Advisory, which takes effect at 1 PM. NWS now believes that the low, while still quite potent, won’t kick up the higher 45-50 MPH winds as first thought.

Keep an eye to the sky this weekend, folks. We’ve got quite a setup for a pretty significant severe weather outbreak tomorrow, which unfortunately gets in the way of Mother’s Day. There’s also a chance that today could get particularly rough, particularly in the afternoon as the heating of the day kicks in and kicks off those summer thunderstorms we all know and love. I’m particularly worried about the afternoon CofC commencement ceremony, which starts at 4 — typically the time of peak intensity for these isolated thunderstorms. Here’s hoping they avoid the peninsula until after the conclusion of that ceremony. Radar’s not showing much yet, though that could change literally at any time.

Keep an eye here or on @chswx on Twitter, as I do send tweets in severe weather situations. I also have started to do some live weather broadcasting when conditions warrant, including a quick briefing I produced this morning about this weekend’s setup. Typically, I’ll broadcast in heavy weather situations as well in addition to sending tweets — I take the SuperDeeDooperDoppler full, have interactive chat, and it’s a really great experience. Join us next time!

UPDATE: A snippet from the National Weather Service after the jump. read more »