Be aware of flood hazards no matter where you live, but especially if you live in a low-lying area, near water or downstream from a dam.
Listen for news reports to learn whether the community’s water supply is safe to drink.
To prepare for a flood emergency, you should have a NOAA Weather Radio as well as a commercial radio. Let's take a look at seven years' worth of flash flood warnings (almost 27,000 in total) issued by the National Weather Service between early 2007 and July 2014. Moving north so we don't forget our friends in the Midwest, much of the flash flooding that occurs in the region is the result of thunderstorm training (heavy storms constantly moving over the same area like train cars on railroad tracks).
The northwestern United States doesn't see many flash flood warnings due to a general lack of thunderstorm activity, but heavy rainfall in valleys can prove dangerous, especially with the risk of mudslides. Much like Hawaii, Puerto Rico's tropical location allows the territory to see frequent heavy rainfall events, some of which produce flash flooding. Map informationMap Information; This is a map of the continental United States, Puerto Rico, Alaska, and Hawaii including state boundaries. PDFBe Smart-Know Your Alerts and WarningsThe factsheet provides a brief summary of the various alerts and warnings available from Federal, state, local governments as well as the private sector that you can sign up for to stay informed and be ready to take action to be safe. I put together some maps to show how frequently different parts of the United States experience these dangerous torrents of water. In low-lying areas, especially near creeks, streams, and in hilly urban areas, water can rise very quickly during a heavy rainstorm.
Unlike tornadoes, which can develop so quickly that meteorologists and their technology can miss them and fail to issue a warning in time, it's hard to not issue a flash flood warning when the threat exists. The guidance shows how much rain has to fall in a certain period of time (say, two inches of rain in an hour) in order to create conditions favorable for the development of a flash flood.
The frequency of flash flood warnings over the seven-year period lowers as you move north and west away from the megalopolis.
For more information, download the How to Prepare for a Flood guide, which provides the basics of floods, explains how to protect yourself and your property, and details the steps to take now so that you can act quickly when you, your home, or your business is in danger. The first and highest frequency group in the scale represents counties with between 101 and 4,114 flood events. Thunderstorms tend to move through this area very slowly, creating runoff issues, especially in cities such as Greensboro and Raleigh.
It includes data from the NCDC Storm Events database, and includes all events in the database categorized as Costal Flooding, Flooding, Flash Flooding, Lakeshore Flooding, and Storm Surge.
According to them, the biggest threat they face is lack of water caused by the very dry weather. The densely-packed streets, parking lots, and sidewalks don't allow the water to absorb into the ground, forcing it to run off and increase the risk of urban flash flooding. Oftentimes, arroyos fill up all at once, with a wall of water rushing downstream from the thunderstorm.
The need to go somewhere isn't that important, especially since people who drive through floodwaters not only risk their lives if they get stuck, but the lives of those who have to wade out there to rescue them. The second highest frequency group in the scale represents counties with between 21 and 100 flood events. Marshall Shepherd noted on Twitter last week, the sewer systems in cities were designed back in the 1950s and 1960s, and they aren't able to handle heavy rainfall events today.
This second frequency level covers the other half of Hawaii and most or part of every state and Puerto Rico, with the exception of Wyoming.
Surely, there would be no need for flood insurance where you live with its bare hills, deep canyons, and dry land. This is the second installment of the Survival: Soup to Nuts Series, part I is a video, click here if you missed it.
It is your job to identify the most probable scenarios that you face, dissect the mechanics of the event and devise the best courses of action.
For disasters with little or no warning, like earthquakes and tornadoes, it is imperative that you and your family have a plan and practice it regularly.  If the time ever comes you and the people you are responsible for must know what to do and react instantly. Of all the injuries that can happen in an emergency, having a medical kit that focuses on keeping blood inside the body should be of primary concern.
I carry a small Streamlight Microstream on my person or within arm’s reach 24 hours a day.  As far as lights go it is decent light, but the important thing is I have a source of light the moment the power goes out. Preparing for a 72 hour emergency is the first action step you should take in your journey towards self-reliance.
With the recent spate of flash floods in Detroit and Baltimore and New York, a common question rising in the storms' aftermath asks how often certain areas of the country see flash floods. A flash flood is the rapid onset of flooding due to extremely heavy rainfall in a relatively short period of time.
One of the ways we can tell how frequently flash flooding occurs is to look at the number of flash flood warnings issued by the National Weather Service. The factors that allow for the development of flash floods include soil moisture (soil too moist or too dry can't efficiently absorb heavy rainfall), terrain, proximity to bodies of water, and urbanization. Taking a look at the entire country, it's clear that most of the flash flood warnings issued by the NWS occur east of the Rockies, with two areas of higher density around the Mississippi River and the I-95 corridor from D.C. It shows there's no real environmental reason for the blocky nature of the warnings, but rather it's the result of jurisdiction and one group of forecasters seeing a higher threat than forecasters at a neighboring office. The southeastern United States is able to hold its water a little better given the relatively sparse population density compared to the northeast, but that changes once you get into the swampy areas of the northern Gulf Coast.
The propensity for heavy rainfall along with the low-lying, saturated nature of the terrain in the Mississippi River Valley also leads to frequent flash flooding, accounting for the near-solid green color on the map. If you pick up one message from this article, it's that we humans are the cause of a lot of the flash flooding we see on the news.
Florida as a whole doesn't really see much flash flooding, but take a close look at the strip of cities along the state's southeastern coast. Again, for the urban effect, look at the dense warnings around downtown Chicago and Minneapolis. As we move into the western Plains and the Rockies, flash flooding becomes more sparse due to the general lack of convection most of the year. The southwestern United States sees quite a few flash flooding events thanks to the monsoon season.

Above is a video of flash flooding in an arroyo in Nevada, showing how it goes from bone dry to a few feet of swiftly-moving water in less than two minutes. Hawaii often sees flash flood warnings during heavy thunderstorms, except for the leeward side of Mauna Kea and Mauna Loa. A major spring snowstorm dumped heavy snow in excess of six inches over a wide swath of the Upper Midwest this week, adding to a snowpack that is already near or in excess of record levels over Minnesota, North Dakota, and South Dakota. Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.
Quoting RastaSteve:Yeah, you may want to reconsider as the NWS of Melbourne thinks some area tomorrow alone will get 2" to 3". Quoting Drakoen:That map from the HPC is good for now, maybe narrowing that region of highest QPF just a bit. Quoting CybrTeddy:Looks like the hottest day of the year for FL so far.Yep its 87 at my place! This is a serious situation, there are several cell with 70+ DBZ rating on them in Central Georgia! Quoting Jedkins01:That QPF map doesn't really make any sense to me, the reason why is all the models show the heaviest convection over Central Florida as well as the front stalling in Central Florida. Install "check valves" in sewer traps to prevent flood water from backing up into the drains of your home.
Use extreme caution when entering buildings; there may be hidden damage, particularly in foundations.
If you require more information about any of these topics, the following are resources that may be helpful. Flooding can occur during every season, but some areas of the country are at greater risk at certain times of the year.
PDFHow to Prepare for a FloodThis hazard-specific guide provides information on the basics of each hazard, how to protect yourself and your property, and what steps to take now. Flood effects can be local, impacting a neighborhood or community, or very large, affecting entire river basins and multiple states. As a resident of central North Carolina, I can attest to the fact that the state often sees flash flood warnings. Flooding may happen with only a few inches of water, or it may cover a house to the rooftop. The guides provide suggestions on conducting a day of action by holding a preparedness discussion and simple drill.
They can't issue warnings outside of their CWA boundaries, so the end result is a blocky mess of warnings when you zoom-out to a regional view.
The counties with this frequency level cover half of Hawaii and parts of California, Arizona, New Mexico, Texas, Missouri, Indiana, Pennsylvania, New Jersey, and Florida. Survival kit includes a hollow grip with a compass top to store items within the knife itself, as well as additional pouches on the sheath to hold the rest. A slight but noticeable pattern emerges on Puerto Rico, as the windward side of the island sees flash flooding more frequently than the leeward side.
Overland flooding occurs outside a defined river or stream, such as when a levee is breached, but still can be destructive.
Every year people are killed because they're hiking in an arroyo and there's a thunderstorm miles away, sometimes so far away that it's sunny where the doomed hikers are located.
It usually takes a less intense storm to produce flash flooding in downtown areas than it would in a place like Carroll, Iowa. Most of the flash flood warnings in Florida are confined to cities where water has a hard time running off into the environment.
The soil is very fertile in the area and can hold its fair share of moisture, but when it gets too saturated, the water just runs off and creates a dangerous situation for residents. The worst flooding in the area often occurs along the eastern side of the Rockies in eastern Colorado, especially around Colorado Springs. The NWS office in Puerto Rico is also responsible for issuing warnings for Vieques and Culebra (the two islands just off PR's eastern coast) as well as the U.S. Regardless of where you live, if the NWS ever issues a flash flood warning, don't ignore it. This is bad news for residents in flood-prone areas of the Upper Midwest, as the new storm added more than half an inch of melted rainfall equivalent to the record wet snowpack.
The day ended with officials saying the huge figure had been miscalculated and offering apologies."The number is not credible," said Tokyo Electric Power Co. Expect a big explosion of storms later tonight into tomorrow morning over C FL.Keep in mind though, that's referring to some areas.
Looking at the latest and previous runs of the GFS as well as the GEFS, they have been showing a large region between 3-4 inches around the Gulf Coast region from Louisiana to the Big Bend region of Florida where the dynamics will be the best. I also think a QPF of 3.5 inches widespread my be overdoing it a bit considering this is the driest time of year, but widespread amounts of 1 to 2 inches seems more reasonable.
Since 1980 there have been 372 incidents, including loss of electricity which caused loss of the systems cooling as well as the emergency-cooling. Construct barriers (levees, beams, floodwalls) to stop floodwater from entering the building.
FEMA manages the National Flood Insurance Program, which makes federally-backed flood insurance available in communities that agree to adopt and enforce floodplain management ordinances to reduce future flood damage.
Even very small streams, gullies, creeks, culverts, dry streambeds, or low-lying ground that appear harmless in dry weather can flood. Below is a map of the United States, which depicts all coastal, flash, lakeshore, storm surge, or other flooding identified by the National Oceanic and Atmospheric Administration (NOAA) by county since 1996. But flash floods can develop quickly, sometimes in just a few minutes and without any visible signs of rain. The blocky nature of the warnings in Texas is a result of NWS offices issuing warnings based on counties rather than the storms, in addition to the office boundaries (look around Lubbock for a great example). These guides also present step-by-step instructions on conducting a tabletop exercise designed to help organizations test their plans, policies, and procedures for a disaster.
You continue to see public service announcements from the federal government about flood insurance and the need to protect yourself from flood damage. The areas for this level cover most of Puerto Rico, part of Alaska, and only a few counties in Washington state, Oregon, California, Idaho, Nevada, Utah, Montana, Wyoming, Colorado, New Mexico, North Dakota, Nebraska, Texas, Minnesota, Michigan, Georgia, and South Carolina.

Most of you probably have the likelihood of dealing with multiple types of emergencies, hence keeping your 72 hour lifeline mobile.
Unlike a thunderstorm over farmland where water can seep into the ground, when heavy rain falls over a city, it's hitting pavement and running off into the sewers. When all that snow melts in April, we can expect major and possibly record flooding for North Dakota, South Dakota, Minnesota, and the Upper Mississippi River north of St.
With PW's getting up around 2.00 inches and steep lapse rates, there's gonna be very intense rainfall as there is always is in Florida. The axis of heaviest precip lies around the I-10 corridor of those aforementioned areas.Yeah, I'm just playing it as a wait and see, there isn't a lot of confidence in this forecast as I'm sure you're aware of. However, because of very high moisture content and intense convection, isolated much heavier amounts could exist.That map from the HPC is good for now, maybe narrowing that region of highest QPF just a bit.
When both cooling-systems were down the diesel-driven-cooling was overheated and went down also. Six inches of water will reach the bottom of most passenger cars causing loss of control and possible stalling. Flood insurance is available whether the building is in or out of the identified flood-prone area. Since earthquakes were a threat in your area, you always kept some extra food, water, and other supplies on hand and maintained an earthquake insurance policy, just in case something happened. Flash floods often have a dangerous wall of roaring water that carries rocks, mud, and other debris and can sweep away most things in its path. In all, approximately 95% of the US is under one of the first three frequency groups with some recorded flooding. I have never seen it this hot so early in the year.Well its 91 at Orlando International but I bet local temps are higher, 90s in March, that's pretty crazy!
Only an emergency powerline to an old coal plant saved us then."In the US, nuclear power is HEAVILY regulated to the point where hardly anyone is willing to build a nuclear plant (let alone nuclear research) due to the expense. Two feet of rushing water can carry away most vehicles including sport utility vehicles (SUV’s) and pick-ups. National flood insurance is available only for buildings within an identified flood-prone area. Be prepared to move to higher ground; listen to NOAA Weather Radio, commercial radio, or television for information.
Their March Spring Flood Outlook released last week warned: A large swath of the North Central United States is at risk of moderate to major flooding this spring.
The forecast for Orlando when you click on it is 87, LOL so much for that.The forecast for my place was 82 today on the west side of state but even here it has reached 87!I love this weather though! Flash floods can occur in these areas with or without such typical warnings as rain clouds or heavy rain. Heavy late summer and autumn precipitation have left soils saturated and streams running high before the winter freeze-up. Even convection up there takes on a similar form with elevated convection generally producing fairly uniform coverage.However here in Florida you'll have some areas get 2 or 3, while others get very little. Same with France and multiple other countries."I live in the Netherlands, this nuclear facility is not privately owned. If floodwaters rise around your car, abandon the car and move to higher ground if you can do so safely.
National Weather Service models show this year's snowpack contains a water content ranked among the highest of the last 60 years, which is similar to the past two years. But these things happen you know.And saying that more people die of wind power is really BS.
This threat area extends from northeastern Montana through Wisconsin and along the Mississippi River south to St. Now that's not always the case, that's just a general example, obviously weather is more variable than that, but you get the picture.I am expecting some pretty impressive storm coverage tomorrow though.
You should look up what Chernobyl caused.And then you should realise that WHO (World Health Organisation) can't come up with the numbers they really found because of an agreement with the UN, especially the IAEA.
For the third consecutive year, forecasters predict major flooding along the Red River of the North, which forms the state line between eastern North Dakota and northwest Minnesota. Other areas of the Midwest primed for major flooding include Devils Lake in North Dakota, the Milk River in Northeastern Montana, the James and Big Sioux Rivers in South Dakota, the Minnesota River, and the Mississippi River from its headwaters near St.
NOAA's latest significant river flood outlook shows that spring flooding is already occurring over South Dakota and on the Mississippi River near its junction with the Ohio River, but is not yet widespread across the Upper Midwest.There is a huge amount of snow on the ground in North Dakota along the tributaries of the Red River, thanks to fall precipitation that was 150% - 300% of normal, and winter snows that have dumped up to 400% more precipitation than usual. If heavy rains occur at the same time that the snow melts, there is the potential for the greatest flood in history to affect the cities of Fargo and Grand Forks, the largest and third largest cities in North Dakota.
NWS is giving a 35% chance that Fargo will see its greatest flood in history this spring, up from the 20% chance they gave in their February spring flood outlook.The situation is similar in Minnesota, which has received about double its normal precipitation over the past 3 to 4 months, resulting in the 5th snowiest winter on record in Minneapolis. Snow depths are in excess of 20 inches over wide swaths of of the state, and this snow has a very high water content equivalent to 4 - 6 inches of rain. Paul will exceed major flood stage this spring.In South Dakota, heavy snows this winter have also left a snowpack with a high water content over the northeast corner of the state. The NWS is predicting a 25% chance that the the James River at Huron, SD will reach its highest flood height in history, and a 50% chance for the Big Sioux River at Brookings, SD.Figure 3. Late next week, there is the potential for a snowstorm that could bring an additional 0.5 - 1" of melted equivalent snow, though this is very uncertain at this point. This will give some time for the current pulse of flood waters generated during last week's warm spell over South Dakota and southern Minnesota to move downstream, and makes the peak of this year's spring flood unlikely to occur until at least the second week of April.
Looking back at past great floods in the Upper Midwest, the record 2009 Red River flood peaked on March 28 in Fargo. The great 1997 Red River flood that devastated Grand Forks, causing $3.5 billion in damage, crested on April 18.
I expect this year's peak flood will most likely arrive during the 3rd week of April.Mostly offshore winds expected over Japan for the next weekRadioactive plumes emitted from Japan's troubled Fukushima nuclear power plant will mostly head eastwards out to sea over the next week, thanks to high pressure that will dominate Japan's weather.

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