Significant Flooding/Rainfall Event
July 12, 2006
|
On Wednesday July 12, 2006, a very moist air mass was in place across the
Buffalo County Warning Area with precipitable water values near to
slightly above 2 inches. The combination of a slow moving warm
front
and
a low level jet on the order of 35 knots, provided the focus for heavy
convective rains along the south shore of Lake Ontario. |
 |
Storm total rainfall amounts ranged between 2 and 5 inches in a
corridor from Eastern Niagara County to Northern Cayuga County (see
precipitation plots; Figure 1 and Figure 2).
Preliminary Local Storm Reports: Flooding
Reports
| Orleans County |
Numerous roads impassable due to flooding.
Storm sewer manhole lifted by overflowing sewer system. |
| Wayne County |
In the town of Wolcott; many streets closed. State of
Emergency declared.
Numerous secondary roads closed north of Clyde. |
| Cayuga County |
In the town of Conquest; road closed due to water over Route
38.
In the town of Meridian; road closed due to water over Route
370. |
| Monroe County |
Interstate route 390 closed due to flooding from County route
111 to Route 104.
Several other intersections closed due to flooding and vehicles
stuck in high water. |
Record Rainfall !!
Daily rainfall record were established at both Buffalo and
Rochester.
The daily rainfall of 1.79 inches at Buffalo broke the old daily
rainfall record for July 12 of 1.36 previously set back in 1878.
The daily rainfall of 3.33 inches at Rochester broke the old daily
rainfall record for July 12 of just 0.92 inches previously set back in
1910. This is also the greatest daily rainfall ever recorded in the
month of July. The previous record was 3.26 inches set on July 11 1897.
In addition, this is the 3rd greatest daily total in Rochester in the
past 100 years. The only ones greater were 3.47 inches on September 14,
1979, and 3.45 inches on May 16, 1974. Going even further back, the all
time daily rainfall record was 4.14 inches on August, 1893. 3.77 inches
also fell on October 30, 1873.
Unofficial Storm Rainfall Totals for July 12
| Erie County |
| Cheektowaga (Airport) |
1.79" |
| Clarence Center |
1.75" |
| Monroe County |
| Rochester (Airport) |
3.33" |
| Webster |
2.87" |
| Charlotte |
2.81" |
| Ontario County |
| Victor |
3.16" |
| Orleans County |
| Gaines |
2.31" |
| Oswego County |
| Hannibal |
3.00" |
| Constantia |
2.68" |
| Wayne County |
| Sodus Point |
2.90" |
| Newark |
2.32" |
Precipitation Plot for July 12 (Figure 1)
Click image to enlarge
Image from the NWS Precipitation Analysis Page (Figure
2). Visit this
page to view precipitation maps you can customize.
Click image to enlarge
|
www.nws.noaa.gov 
