Localized Flooding in Humboldt Bay Area Predicted

Kym Kemp / Saturday, Dec. 22, 2012 @ 6:26 p.m. /  Weather

According to the National Weather Service, moderate to heavy rain will continue in the Humboldt Bay Region until 8:30 P.M.  This will cause flooding on streams and creeks especially in urban areas.  The service warns of “ponding of water in urban areas…highways…streets and underpasses as well as other poor drainage areas an low lying spots.  There could be “localized flooding.” 

They have identified several areas of concern which include Jolly Giant, Jacoby, Freshwater, Salmon Creeks (presumably by CR), Elk River and numerous sloughs around the Bay.

They also predict isolated thunderstorms throughout the region.

National Weather Service Alert: (see below)

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR HEAVY RAIN IN...
  CENTRAL HUMBOLDT COUNTY IN NORTHWEST CALIFORNIA...
  THIS INCLUDES THE CITY OF EUREKA...

* UNTIL 830 PM PST

* AT 534 PM PST RADAR INDICATED MODERATE TO HEAVY RAIN MOVING TOWARD
THE HUMBOLDT BAY REGION. THIS WILL CAUSE LOCALIZED FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...AND PONDING OF WATER IN URBAN AREAS...
HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER POOR DRAINAGE
AREAS AND LOW LYING SPOTS.

FLOODING WILL OCCUR IN LOW LYING AREAS AROUND HUMBOLDT BAY THIS
EVENING...WITH MORE WIDESPREAD PONDING WATER DURING PERIODS OF
HEAVIEST RAINFALL. URBAN AREAS ARE SUSCEPTIBLE TO STREET FLOODING AS
STORM DRAIN CAPACITIES ARE EXCEEDED. SMALL STREAMS AND CREEKS WILL
RISE AND MAY EXCEED THEIR CHANNEL AND CULVERT CAPACITIES CAUSING
LOCALIZED FLOODING. AREAS OF PARTICULAR CONCERN ARE JOLLY
GIANT...JACOBY...FRESHWATER...SALMON CREEKS...AS WELL AS ELK RIVER
AND NUMEROUS SLOUGHS AROUND THE BAY. HIGH TIDES COINCIDENT WITH
RISING STREAM FLOW WILL ENHANCE FLOODING IN LOW LYING COASTAL AREAS.
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