Due to the potential flooding in the eastern US the National Weather Service - Weather Prediction Center branch is actually starting to issue 'Storm Summaries'.
Storm Summary No 01 can be found here:
http://www.wpc.ncep.noaa.gov/discussions/nfdscc2.html
Excerpt from it:
"AT 400 PM EDT...A STATIONARY FRONTAL BOUNDARY WAS IN PLACE JUST
OFF THE U.S. EAST COAST. A SURFACE LOW WITH A CENTRAL PRESSURE OF
1000 MB...29.53 INCHES...HAS DEVELOPED ALONG THE FRONT EAST OF THE
GEORGIA/FLORIDA BORDER. A PLUME OF MOISTURE WAS STREAMING
NORTHWARD FROM HURRICANE JOAQUIN AND INTERACTING WITH THE FRONTAL
BOUNDARY AND SURFACE LOW TO PRODUCE WIDESPREAD RAIN ACROSS MUCH OF
THE EASTERN U.S. NATIONAL WEATHER SERVICE RADARS AND SURFACE
OBSERVATIONS INDICATED RAIN WAS GENERALLY LIGHT TO MODERATE AT
THIS TIME...ALTHOUGH THERE WERE OCCASIONAL REPORTS OF HEAVY RAIN.
IN ADDITION TO THE RAINFALL...A TIGHTENING PRESSURE GRADIENT
RESULTING FROM A STRONG POLAR HIGH PRESSURE AREA ACROSS EASTERN
CANADA WAS RESULTING IN STRONG AND GUSTY EASTERLY TO NORTHEASTERLY
WINDS ACROSS MUCH OF THE EASTERN U.S. WIND GUSTS IN EXCESS OF 40
MPH WERE REPORTED IN SOME AREAS. PERSISTENT EASTERLY FLOW IS ALSO
RESULTING IN COASTAL FLOODING AND HIGH SURF ALONG MUCH OF THE EAST
COAST. "
"THE FRONTAL BOUNDARY AND SURFACE LOW ARE FORECAST TO PERSIST ALONG
THE EAST COAST THROUGH THE WEEKEND...WITH THE FRONT FORECAST TO
DRIFT VERY SLOWLY WESTWARD INTO THE EASTERN CAROLINAS. ALTHOUGH
HURRICANE JOAQUIN IS FORECAST TO REMAIN OFFSHORE...WITH A FORECAST
TRACK TAKING THE STORM OUT TO SEA...TROPICAL MOISTURE WILL
CONTINUE TO STREAM INTO THE REGION ACROSS THE FRONT...WITH HEAVY
RAINS EXPECTED OVER A LARGE AREA. THROUGH SUNDAY EVENING...THE
HEAVIEST RAIN IS FORECAST TO FALL ACROSS SOUTH CAROLINA...EASTERN
GEORGIA...AND WESTERN NORTH CAROLINA...WHERE 5 TO 10 INCHES OF
RAIN ARE EXPECTED. LOCALIZED RAINFALL TOTALS WITHIN THIS AREA MAY
EXCEED 12 INCHES. ADDITIONAL RAINFALL TOTALS OF 1 TO 4 INCHES ARE
POSSIBLE FARTHER NORTH ACROSS MUCH OF THE SOUTHERN MID-ATLANTIC
REGION...AND FARTHER WEST...FROM WEST VIRGINIA AND KENTUCKY SOUTH
INTO THE TENNESSEE VALLEY. STRONG AND GUSTY WINDS WILL CONTINUE
THROUGH THE WEEKEND AS A TIGHT PRESSURE GRADIENT REMAINS IN
PLACE...WITH WIND GUSTS EXCEEDING 40 MPH POSSIBLE ACROSS MUCH OF
THE EASTERN U.S. THESE WINDS MAY RESULT IN SCATTERED DOWNED TREES
AND POWER OUTAGES IN SOME AREAS DUE TO THE VERY WET SOIL
CONDITIONS. COASTAL FLOODING WILL ALSO REMAIN A HAZARD ALONG MUCH
OF THE EAST COAST THROUGH THE WEEKEND...DUE TO THE STRONG ONSHORE
FLOW. "
Next one to be issued at 11pmEST.