STORM2K

Some lightning is showing up off to my west and southwest as cloudiness, showers, and thunderstorms are filling in nicely on radar ... though, these storm are not likely to be severe ... but the potential of heavy rains since these storms are slow-moving and PWAT are in excess of 1.5" and near 2" around the Savannah, GA vicinity.

Wind shear parameters are good for severe, however, winds at the surface are almost nil this evening. Latest RUC analysis gives lower SC a general ½" to 1"...locally heavier in stronger storms.



Radar Loop
http://www.crh.noaa.gov/radar/loop/DS.p ... kclx.shtml

Where is Ladson on that map, SF?

A lot of heat lightning now all around my location and the main line continues to creep closer ... some of the storms are producing rainfall rates of up to 2" per hour.

1 hour Rainfall rates...
http://www.crh.noaa.gov/radar/loop/DS.7 ... kclx.shtml

Joshua21Young wrote:Where is Ladson on that map, SF?

I'll post a map of the location in just a minute for Josh. Got a warning just issued (from the Weatherbug ... just went off - Flood Statement)

FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1019 PM EDT SUN MAY 18 2003

...HEAVY RAINS FALLING OVER PORTIONS OF SOUTHEAST SOUTH
CAROLINA...

AT 1020 PM...CHARLESTON NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATES AN AREA OF SHOWERS AND THUNDERSTORMS MOVING NORTHEAST
ALONG THE SOUTH CAROLINA COAST. THE STRONGEST STORMS WILL ENTER THE
SOUTHERN END OF CHARLESTON COUNTY...MOVING NORTHEAST AT 30 MPH.
OTHER STRONG STORMS WILL MOVE NORTHEAST ACROSS NORTHERN COLLETON AND
DORCHESTER COUNTIES. THESE STORMS HAVE A HISTORY OF PRODUCING 1 TO
2 INCHES OF RAIN AN HOUR...WITH SOME PONDING OF WATER ON ROADWAYS
AND LOW LYING AREAS EXPECTED.

OF PARTICULAR CONCERN IS DOWNTOWN CHARLESTON WHERE THE APPROACHING
RAINFALL WILL COMBINE WITH HIGH TIDE TO PRODUCE STREET FLOODING.
RESIDENTS LIVING DOWNTOWN ON FLOOD PRONE STREETS SHOULD TAKE THE
NECESSARY PRECAUTIONS AS SOME STREETS MAY BECOME IMPASSABLE WITH
HIGH WATER.

BE ESPECIALLY CAUTIOUS AT NIGHT SINCE IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. USE CAUTION IN AND AROUND STREAMS...CREEKS AND
DRAINAGE DITCHES. TAKE THE SHORTEST PATH TO REACH HIGHER GROUND BUT
DO NOT DRIVE INTO RISING OR FAST MOVING WATER.

STAY TUNED TO NOAA WEATHER RADIO AND THE NATIONAL WEATHER SERVICE
FOR LATER STATEMENTS OR WARNINGS.

$$

Yep....some very heavy rain in that line! :o

Stay safe SF! :o Don't wantcha floatin' away!

Joshua, the blue box within this cropped archived radar image is approximately my location.

Took me forever to find Ladson in my atlas and impossible to find on there.

Joshua21Young wrote:Took me forever to find Ladson in my atlas and impossible to find on there.

Ladson in area is not very large ... but the population is around 15,000 people...most of Ladson actually is in Berkeley and Charleston Counties, though a small sliver of it lies in Dorchester County.

Hope the blue dot indicator (amongst the convection on the archived map helps out)

Anyway, the good ol' squeezeplay is about to take shape ... areas of convection converging on my area, in addition, the nocturnal jet (low level jet streak of 30 kts has developed from the ESE/SE) has kicked up and thunderstorms are intensifying as I type. Rainfalls are expected to be 1"-2" per hour...PWAT's have increased to near 2"(PWAT's stands for Precipitable Water).

I don't see a blue dot anywhere ... oh well. Thanks for the effort.

Joshua21Young wrote:I don't see a blue dot anywhere ... oh well. Thanks for the effort.

Josh, I posted this about on the 7th post of the thread look just above the first O in Walterboro for the Blue Dot (or Square). This is an archived image from the May 6th, 2003 tornadic cell about 15 minutes after it came through.


Currently, the deluge just started 2 minutes ago, and it's coming down fast and furiously ... and just picked up even moreso as I finish typing this.

Now I see it. Dahhhhhhhhhhh J/P Thanks for un-blinding me.

Joshua21Young wrote:Now I see it. Dahhhhhhhhhhh J/P Thanks for un-blinding me.

No problem, Joshua..

BTW, deluge still in progress, but it doesn't look as though, it's going to last quite as long as I thought ... the two areas joined up but it's moving a little quicker now ... (unless some backbuilding along the tail edge stalls the overall movement) ... quite a bit of rain already has fallen just in 15 minutes ... still coming down too hard to check ... but I estimate ½" so far.

Rains are slowing down but the lightning now within the tail end of the thunderstorm line has grown a little more intense and brighter flashes ... very heavy rainfalls in just 30 minutes however. Some localized flooding as at one point rainfall rates were in the 2" an hour range ... DBZ reflectivity was in the 60+ range ... plus winds gusted to 24 mph during the onset of the storms ... nothing major but was a little surprised of the winds being transported down.

Update: .95" fell in just 27 minutes (12:15 am). Still raining lightly.

Nice rainfall total for 27 minutes. That would give you about 2.11101875" in an hour at that rate.