Drscottsmith
Member
The storm S of Greenwood may be that cell...already broad rotation.
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March 18-19th Possible Severe Wx Outbreak
- Thread starter Myfrotho704_
- Start date
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
255 PM EDT THU MAR 18 2021
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* TORNADO WARNING FOR PORTIONS OF...
BRYAN COUNTY IN SOUTHEASTERN GEORGIA...
CHATHAM COUNTY IN SOUTHEASTERN GEORGIA...
JASPER COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
* UNTIL 330 PM EDT.
* AT 255 PM EDT, A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR BURROUGHS, MOVING NORTHEAST AT 25 MPH.
HAZARD...TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
DAMAGE TO ROOFS, WINDOWS, AND VEHICLES WILL OCCUR. TREE
DAMAGE IS LIKELY.
* LOCATIONS IMPACTED INCLUDE...
POOLER, RICHMOND HILL, WINDSOR FOREST, I-16/I-95 INTERCHANGE,
HUNTER ARMY AIRFIELD, DOWNTOWN SAVANNAH, GODLEY STATION, SAVANNAH
INTERNATIONAL AIRPORT, MIDTOWN SAVANNAH, GARDEN CITY, PORT
WENTWORTH, BLOOMINGDALE, THUNDERBOLT, SAVANNAH HISTORIC DISTRICT
AND WHITEMARSH ISLAND.
THIS WARNING INCLUDES...
I-16 BETWEEN MILE MARKERS 153 AND 168.
I-516 BETWEEN MILE MARKERS 3 AND 9.
I-95 IN GEORGIA BETWEEN MILE MARKERS 91 AND 111.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS, IN A MOBILE
HOME, OR IN A VEHICLE, MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.
LAT...LON 3192 8131 3206 8139 3223 8118 3204 8098
TIME...MOT...LOC 1855Z 237DEG 23KT 3202 8132
TORNADO...RADAR INDICATED
HAIL...0.00IN
TORNADO WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
255 PM EDT THU MAR 18 2021
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* TORNADO WARNING FOR PORTIONS OF...
BRYAN COUNTY IN SOUTHEASTERN GEORGIA...
CHATHAM COUNTY IN SOUTHEASTERN GEORGIA...
JASPER COUNTY IN SOUTHEASTERN SOUTH CAROLINA...
* UNTIL 330 PM EDT.
* AT 255 PM EDT, A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR BURROUGHS, MOVING NORTHEAST AT 25 MPH.
HAZARD...TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
DAMAGE TO ROOFS, WINDOWS, AND VEHICLES WILL OCCUR. TREE
DAMAGE IS LIKELY.
* LOCATIONS IMPACTED INCLUDE...
POOLER, RICHMOND HILL, WINDSOR FOREST, I-16/I-95 INTERCHANGE,
HUNTER ARMY AIRFIELD, DOWNTOWN SAVANNAH, GODLEY STATION, SAVANNAH
INTERNATIONAL AIRPORT, MIDTOWN SAVANNAH, GARDEN CITY, PORT
WENTWORTH, BLOOMINGDALE, THUNDERBOLT, SAVANNAH HISTORIC DISTRICT
AND WHITEMARSH ISLAND.
THIS WARNING INCLUDES...
I-16 BETWEEN MILE MARKERS 153 AND 168.
I-516 BETWEEN MILE MARKERS 3 AND 9.
I-95 IN GEORGIA BETWEEN MILE MARKERS 91 AND 111.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS, IN A MOBILE
HOME, OR IN A VEHICLE, MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.
LAT...LON 3192 8131 3206 8139 3223 8118 3204 8098
TIME...MOT...LOC 1855Z 237DEG 23KT 3202 8132
TORNADO...RADAR INDICATED
HAIL...0.00IN
A fascinating
depiction of what we have all been talking about. Increased helicity, riding along the boundary... from --'s post.
depiction of what we have all been talking about. Increased helicity, riding along the boundary... from --'s post.
Webberweather53
Meteorologist
Haha was just about to post that here but yep pretty much what I was talking about earlier today wrt tornado climo & CAD.
Webberweather53
Meteorologist
Gotta really watch these storms near that mesolow in Spartanburg-Chesnee, especially if they're tracking parallel to the boundary. That's how you can get numerous tornadoes in one area & strong/long-lived ones too.
Avalanche
Member
First off, glad youre alright!!
Normally, I don’t really get nervous over weather but I have a really eerie feeling about this event for us. The winds are gusting. Temps have shot up. And sun is still peaking through.
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
Avalanche
Member
Is that Concord? Tropical unstable air. Those cumulous clouds are foretelling.
Just had that line pass through and can now see some blue skies starting to emerge.
Sun really trying to break through here in Hillsborough.
Avalanche
Member
Glad you are okay. That was a deep red over Spartanburg.
Avalanche
Member
That storm near Gadfney looks rough!!
Downeastnc
Member
Timing may save the day for us east of I 95 and prevent the front from tapping into the instability currently present....
Lol that meso low is making any shower that forms ahead get supercellular structure 
Skies got dark but overall “meh”
good luck to those east
good luck to those east
B
Brick Tamland
Guest
Mesoscale Discussion 0224
NWS Storm Prediction Center Norman OK
0210 PM CDT Thu Mar 18 2021
Areas affected...northern South Carolina into central North Carolina
Concerning...Tornado Watch 41...
Valid 181910Z - 182145Z
The severe weather threat for Tornado Watch 41 continues.
SUMMARY...Storms will continue to develop east/northeast across the
watch area, and a new watch could be needed into central North
Carolina later this afternoon.
DISCUSSION...A broken line of cells continues to progress east into
northwestern SC, near the surface trough and along and north of the
warm front. Surface analysis shows warming and destabilization
continues south of this front, and this should allow these storms to
persist and perhaps expand in coverage. The greatest severe risk
appears to be along the warm front, where storms will experience
enhanced lift. Strong deep-layer shear as well as effective SRH of
200-300 m2/s2 will favor supercells at times, with a threat of a
brief tornado or damaging gusts. If storm trends continue up over
the next few hours, an additional watch could be needed downstream
into NC.
..Jewell.. 03/18/2021
NWS Storm Prediction Center Norman OK
0210 PM CDT Thu Mar 18 2021
Areas affected...northern South Carolina into central North Carolina
Concerning...Tornado Watch 41...
Valid 181910Z - 182145Z
The severe weather threat for Tornado Watch 41 continues.
SUMMARY...Storms will continue to develop east/northeast across the
watch area, and a new watch could be needed into central North
Carolina later this afternoon.
DISCUSSION...A broken line of cells continues to progress east into
northwestern SC, near the surface trough and along and north of the
warm front. Surface analysis shows warming and destabilization
continues south of this front, and this should allow these storms to
persist and perhaps expand in coverage. The greatest severe risk
appears to be along the warm front, where storms will experience
enhanced lift. Strong deep-layer shear as well as effective SRH of
200-300 m2/s2 will favor supercells at times, with a threat of a
brief tornado or damaging gusts. If storm trends continue up over
the next few hours, an additional watch could be needed downstream
into NC.
..Jewell.. 03/18/2021
Webberweather53
Meteorologist
You definitely don't want storms like this near or just after sunset, that's when your tornado threat will tend to be highest as they've had the most time to mature & the low-level jet is intensifying.
I hate that is is so difficult now to get up to date good radar images for local areas.
Cadi40
Member
I'm thinking the counties that lie between I-85 and I-95 will be faced with the most intense conditions, as now until 7 PM would be considered peak heating.
Webberweather53
Meteorologist
In saying this, the diurnal timing looks pretty close to ideal for tornadoes in places like the Triangle as the storms should be arriving around sunset give or take an hr ish
B
Brick Tamland
Guest
Even if we don't get any real clearing before then?
Webberweather53
Meteorologist
Yeah in terms of the storms themselves they'll reach peak intensity just after peak heating today, but it's a little later still when the tornado threat tends to be the highest in situations like this.
Shaggy
Member
Mhx seems.to suggest the cap is only breaking just south of us and that new storms should fire soon.
.NEAR TERM /THROUGH TONIGHT/... As of 300 PM...Still an enhanced risk for severe weather later this afternoon and through the evening hours for eastern North Carolina as low pressure still centered over the Mississippi Valley brings a cold front through the Carolinas this afternoon and evening. While kinematics remain strong with plenty of low level shear in play, instability continues to be the lingering question. Latest data from an 18z supplemental sounding shows CAPE values around 2000 J/KG as temperatures have risen well into the 70s especially in the southwestern counties where capping will begin to erode and convective initiation should begin over the next couple of hours. Low level lapse rates starting to come in over 7 deg/km support this.
Oh no 
mbway091
Member
Mesoscale Discussion 0224
NWS Storm Prediction Center Norman OK
0210 PM CDT Thu Mar 18 2021
Areas affected...northern South Carolina into central North Carolina
Concerning...Tornado Watch 41...
Valid 181910Z - 182145Z
The severe weather threat for Tornado Watch 41 continues.
SUMMARY...Storms will continue to develop east/northeast across the
watch area, and a new watch could be needed into central North
Carolina later this afternoon.
DISCUSSION...A broken line of cells continues to progress east into
northwestern SC, near the surface trough and along and north of the
warm front. Surface analysis shows warming and destabilization
continues south of this front, and this should allow these storms to
persist and perhaps expand in coverage. The greatest severe risk
appears to be along the warm front, where storms will experience
enhanced lift. Strong deep-layer shear as well as effective SRH of
200-300 m2/s2 will favor supercells at times, with a threat of a
brief tornado or damaging gusts. If storm trends continue up over
the next few hours, an additional watch could be needed downstream
into NC.
..Jewell.. 03/18/2021
Interesting. That language seems pretty subdued. "Threat of a brief tornado or damaging gust."
Webberweather53
Meteorologist
Looks like we'll see a little clearing prior to the arrival of the storms. Even if we don't there's more than enough instability for us to work w/
I don’t like these 
Downeastnc
Member
Well that sucks....
I was wondering that its 79/66 and some sun appears likely as the bigger breaks are close...
Bannerdude
Member
First peaks of blue sky in Moncure. Temp is 70.4.
Webberweather53
Meteorologist
Sun is out here
----! I really wish they’d let us leave. But I doubt that’s going to happen. My office building is older so, it’s probably not the sturdiest structure in Charlotte.
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Avalanche
Member
Or the fact theyre heading NE.
Webberweather53
Meteorologist
That storm around Jonesville is definitely concerning, the southern cell I thought would be the big dog is struggling more than I thought, may not be close enough to the mesolow to experience sufficient synoptic-mesoscale forcing for ascent to keep itself going
If I’m not mistaken you can sorta hear the LLJ aloft lol
I can vouch for you on that one. I’m sitting my car and definitely hear what appears to be the LLJ.
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Webberweather53
Meteorologist
HRRR is finally catching onto these storms near Charlotte & brings them near-just north of RDU later this evening. Also showing more storms firing along this line further south towards Fayetteville
Downeastnc
Member
That cell near Jonesville probably has some decent structure on the SE side.....certainly has that look to it....
Avalanche
Member
Are they showing the Chatham Co split?
@JHS report?
Was in the dentist office getting a cleaning during the tornado outbreak. Came out to this. Gum balls blown from the trees. We will rebuild.