Public Information Statement
Issued by NWS Omaha/Valley, NE

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14
000
NOUS43 KOAX 241204
PNSOAX
IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-251300-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
705 AM CDT MON MAR 24 2014

...TODAY BEGINS SEVERE WEATHER AWARENESS WEEK IN IOWA AND NEBRASKA...

GOVERNOR TERRY BRANSTAD IN IOWA AND GOVERNOR DAVE HEINEMAN IN
NEBRASKA...THE NEBRASKA AND IOWA EMERGENCY MANAGEMENT AGENCIES...AND
THE NATIONAL WEATHER SERVICE HAVE DESIGNATED THE WEEK OF MARCH 24 TO
MARCH 28 AS SEVERE WEATHER AWARENESS WEEK IN IOWA AND NEBRASKA. EACH
MORNING THIS WEEK...THE NATIONAL WEATHER SERVICE IN OMAHA WILL ISSUE
A PUBLIC INFORMATION STATEMENT FOCUSING ON A DIFFERENT ITEM EACH
DAY. TOPICS THIS YEAR INCLUDE THE FOLLOWING...

MONDAY...FLASH FLOODING
TUESDAY...WARNING RECEPTION
WEDNESDAY...TORNADOES
THURSDAY...SEVERE THUNDERSTORMS
FRIDAY...FAMILY PREPAREDNESS

IOWA AND NEBRASKA WILL HAVE COMBINED SEVERE WEATHER AWARENESS WEEKS.
THE COMBINED WEEK WILL HELP WITH THE TORNADO TEST FOR THOSE ALONG
THE MISSOURI RIVER.

TODAY/S TOPIC IS FLASH FLOODING.

EACH YEAR MORE DEATHS OCCUR DUE TO FLOODING THAN FROM ANY OTHER
THUNDERSTORM RELATED HAZARD...RESULTING IN MORE THAN 140 FATALITIES
EACH YEAR. MOST FLASH FLOODS ARE CAUSED BY SLOW MOVING
THUNDERSTORMS...THUNDERSTORMS THAT REDEVELOP OVER THE SAME AREA...OR
HEAVY RAINS FROM TROPICAL STORMS AND HURRICANES. THESE FLOODS CAN
DEVELOP WITHIN MINUTES OR HOURS DEPENDING ON THE INTENSITY AND
DURATION OF THE RAIN...THE TOPOGRAPHY...SOIL CONDITIONS...AND GROUND
COVER.

A FLASH FLOOD IS A RAPID RISE OF WATER ALONG A STREAM OR LOW LYING
URBAN AREA. FLASH FLOODS CAN ROLL BOULDERS...TEAR OUR
TREES...DESTROY BUILDINGS AND BRIDGES...AND SCOUR OUT NEW CHANNELS.
RAPIDLY RISING WATER CAN REACH HEIGHTS OF 10 FEET OR MORE.

A FLASH FLOOD WATCH IS ISSUED BY THE NATIONAL WEATHER SERVICE TO
INDICATE CURRENT OR DEVELOPING HYDROLOGIC CONDITIONS THAT ARE
FAVORABLE FOR FLASH FLOODING IN AND CLOSE TO THE WATCH AREA. THE
OCCURRENCE OF FLOODING IS NEITHER CERTAIN NOR EMINENT. THOSE IN THE
WATCH AREA SHOULD BE ALERT FOR FLOODING.

A FLASH FLOOD WARNING MEANS NATIONAL WEATHER SERVICE METEOROLOGISTS
HAVE DETERMINED THAT FLASH FLOODING IS OCCURRING OR IMMINENT. THOSE
IN THE WARNING AREA SHOULD TAKE THE NECESSARY PRECAUTIONS AT ONCE.

ALMOST HALF OF ALL FLASH FLOOD FATALITIES OCCUR IN VEHICLES. MANY
PEOPLE DO NOT REALIZE TWO FEET OF WATER ON A BRIDGE OR HIGHWAY CAN
FLOAT MOST VEHICLES. IF THE WATER IS MOVING RAPIDLY...THE
CAR...TRUCK...OR SUV CAN BE SWEPT OFF THE BRIDGE AND INTO THE CREEK
OR DOWNSTREAM WITH THE FLOWING WATER. WATER CAN ERODE THE ROAD
BED...CREATING UNSAFE DRIVING CONDITIONS. UNDERPASSES CAN FILL
RAPIDLY WITH WATER...WHILE THE ADJACENT ROADWAY REMAINS CLEAR.
DRIVING INTO A FLOODED UNDERPASS CAN QUICKLY PUT YOU IN FIVE TO SIX
FEET OF WATER. MANY FLASH FLOODS OCCUR AT NIGHT WHEN FLOODED ROADS
ARE DIFFICULT TO SEE.

WHEN YOU APPROACH A FLOODED ROAD...TURN AROUND...DON/T DROWN!

FLASH FLOOD MYTH VS FACT...

MYTH...FLASH FLOODS ONLY OCCUR IN THE EASTERN UNITED STATES.
FACT...FLASH FLOODS HAVE AND CAN OCCUR IN ALL 50 STATES...INCLUDING
ALASKA AND HAWAII.

MYTH...FLASH FLOODS OCCUR ONLY ALONG FLOWING STREAMS.
FACT...FLASH FLOODS CAN OCCUR IN DRY CREEK BEDS AND URBAN AREAS
WHERE NO STREAMS ARE PRESENT.

MYTH...FLASH FLOODS OCCUR MAINLY IN THE LATE AFTERNOON AND EVENING.
FACT...FLASH FLOODS CAN OCCUR AT ANY TIME OF DAY...MANY FLASH FLOODS
OCCUR AT NIGHT TOO.

MYTH...LARGER VEHICLES SUCH AS SUVS AND PICKUPS ARE SAFE TO DRIVE
THROUGH FLOOD WATERS.
FACT...TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES...INCLUDING
SUVS AND PICKUPS.

MYTH...HOMEOWNERS INSURANCE POLICIES COVER FLOODING.
FACT...UNFORTUNATELY...MANY HOMEOWNERS DO NOT FIND OUT UNTIL IT IS
TOO LATE THAT THEIR POLICIES DO NOT COVER FLOODING. CONTACT YOUR
INSURANCE COMPANY OR AGENT ABOUT FLOOD INSURANCE.

HERE ARE SOME FLOOD SAFETY TIPS...

BEFORE A FLOOD...

KNOW THE COUNTY IN WHICH YOU LIVE AND THE NAMES OF NEARBY MAJOR
CITIES.

CHECK THE WEATHER FORECAST BEFORE LEAVING TO BE OUTDOORS FOR
EXTENDED PERIODS.

WATCH FOR SIGNS OF APPROACHING STORMS.

MONITOR THE NOAA WEATHER RADIO OR YOUR FAVORITE NEWS SOURCE FOR
VITAL WEATHER RELATED INFORMATION.

DO NOT CAMP OR PARK YOUR VEHICLE ALONG STREAMS AND
WASHES...PARTICULARLY DURING THREATENING CONDITIONS.

IF FLOODING OCCURS...

GET TO HIGHER GROUND.

GET OUT OF AREAS SUBJECT TO FLOODING. THIS INCLUDES DIPS...LOW
SPOTS...CANYONS...AND WASHES.

AVOID AREAS ALREADY FLOODED...ESPECIALLY IF THE WATER IS FLOWING
FAST.

DO NOT ATTEMPT TO CROSS FLOWING STREAMS.

ROAD BEDS MAY BE WASHED OUT UNDER FLOOD WATERS. NEVER DRIVE THROUGH
FLOODED ROADWAYS.

DO NOT ALLOW CHILDREN TO PLAY NEAR HIGH WATER...STORM DRAINS OR
DITCHES. HIDDEN DANGERS COULD LIE BENEATH THE WATER.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARD TO RECOGNIZE FLOOD
DANGERS.

$$

NATIONAL WEATHER SERVICE OMAHA/VALLEY NE



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.