Today is the fifth anniversary of a “derecho” thunderstorm that did widespread damage in northern Indiana and locations to the southeast.
“At the peak of the event,” writes the northern Indiana office of the National Weather Service, “the Fort Wayne International Airport observing equipment observed a peak wind gust of 91 mph.”
“Winds were as strong as an EF-1 tornado over a widespread area,” the NWS web page continues, “which resulted in immense damage along the storm’s entire path.” (Emphasis added by W9LW.)
One of the best lessons of that storm should be that we can have massive damage without a tornado. This was a particularly dangerous severe thunderstorm, but there’s no such thing as a “particularly dangerous situation” thunderstorm warning, so we need to pay attention to all severe thunderstorm warnings, even though such warnings are not uncommon.
The title of this post is one of the main points of a presentation I heard at the DuPage County (Ill.) Severe Weather Seminar March 11. College of DuPage meteorology professor Paul Sirvatka reminded spotters that the key to spotting a tornado in a classic supercell is knowing where the updraft is. As Dr. Sirvatka put it, a tornado is a “big sucky thing” that forms under an updraft.
Unfortunately, updrafts are not always easy to find. Depending on your location, important storm features can be obscured, making spotting difficult. And the closer you get to a storm, the more difficult it becomes to identify the important features.
A large part of Indiana has a level two (out of five) risk of severe weather today (April 20, 2017) and this evening, according to the National Weather Service (NWS) Storm Prediction Center. The primary threat today is damaging straight-line winds or gusts of 58 mph or greater, but an isolated tornado cannot be ruled out in much of northeastern and east-central Indiana.
That makes now an especially good time for Hoosiers (and everyone else who lives in an area that ever receives severe weather) to make sure they have good ways to know about any warnings their local NWS offices issue.
So, here’s my list of the best ways to get tornado, severe thunderstorm and flash flood warnings. Continue reading →
For 11 years, Alabama broadcast meteorologist James Spann (ABC 33/40, Birmingham) and several of his friends in the weather enterprise have produced a weekly podcast (internet talk show) called WeatherBrains. It was the first in what has become a group of weather-related podcasts that are jointly celebrating the first-annual National Weather Podcast Month in March.
The weather brains normally record WeatherBrains on Monday evenings. Audience members can watch the discussion live on YouTube, watch it later on YouTube or download the program as an audio recording for listening at their convenience.
W9LW’s Ramblings had chance to talk to Spann about the show that started the weather podcast genre and now has an audience in the tens of thousands. Watch the 14-minute interview on YouTube or read it below. The transcript includes a few helpful notes and hyperlinks.
The National Weather Service (NWS) plans to change its website, www.weather.gov on March 7. When the change takes place any bookmark you’ve created to a specific forecast will no longer work. You’ll have to go to the home page at the URL above, enter the location for which you want a forecast and create a new bookmark for the page that appears. For more information, see the message below that the NWS sent to all Weather-Ready Nation ambassadors.
Dear Weather-Ready Nation Ambassadors,
As part of our continued effort to modernize weather.gov, the National Weather Service (NWS) is upgrading our point forecast, zone forecast, and product pages. Once these changes go live on March 7, all existing bookmarks to forecast.weather.gov will change. Links to a forecast page will display an error message that includes a URL to the new location. You will need to update your bookmarks to continue to access our forecasts quickly after the upgrade. After March 7, the new URL can also be found by searching for your location from forecast.weather.gov or www.weather.gov. These changes will not impact office pages located at www.weather.gov
If you run an automated process to get NWS data from forecast.weather.gov, you will need to switch to the new developer API by March 7. Specifications for the new API can be found here.
The primary focus of the upgrade is to make the forecast pages more reliable during weather events, but there are some new benefits of new forecast pages that include:
Addition of 7-day hourly forecast information to the point forecast page
A new mobile-friendly landing and graphical/tabular forecast page
Low-bandwidth optimization for all pages, on a partial roll-out at launch
Option to automatically detect your location on a mobile device
A new widget mode that allows you to customize the information on the point forecast
We overhauled the architecture of our application platform to provide a more stable and consistent service to meet the demand of severe weather events. The platform also introduces a modernized API that will make it easier for web developers to create high-quality applications and services to share NWS data. The updated web site now provides a complete mobile-friendly experience with optimizations for low bandwidth and customized weather widgets. We also have new data centers located in College Park, MD, and Boulder, CO, to provide 100% backup capability for the operational data used within the forecast process.
We look forward to providing you with useful and timely information using our improved connectivity and new design.
The people of Albany, Georgia continue to need volunteer assistance to recover from last week’s tornado outbreak. One of my favorite relief organizations sent today the email message below, which explains why the need for volunteers from outside the area has increased. Please share this information with any congregations or others who might be interested in helping.
IMPORTANT: Please note that if you need lodging, please do not leave your home until you have received a CONFIRMED RESERVATION. Our field team cannot accept anyone who does not have a CONFIRMED RESERVATION.
DEAR OB VOLUNTEERS,
As we move into “Week 2,” we often refer to it as “Phase 2,” because the local volunteer response begins to drop dramatically as businesses reopen, schools reopen and residents return to work. These factors significantly lower our volunteer numbers, which means that we need out-of-town volunteers even more now. We are writing you today to ask you to consider bringing a team to help us help these precious residents over the next 2 – 3 weeks.
Operation Blessing is accepting volunteers daily at 8:00 AM (Monday – Saturday) at New Birth Fellowship Church in Albany, GA. We have two orientation times each day. Orientation begins at 8:30 AM and 1:00 PM. Operation Blessing will provide everything you need – work assignments, tools, and lunch. All we ask is that you provide your own transportation to and from the work sites. No reservations are needed for daily volunteers.
New Birth Fellowship Church
2106 Radium Springs Road
Albany, GA Onsite Volunteer Line: 757.374.0944
Volunteer Housing NOW OPEN (CONFIRMED Reservation is Required): Operation Blessing provides FREE volunteer housing in Albany. Operation Blessing will provide your lodging, meals, tools and work assignments, free of charge. All we ask volunteers to provide is their own transportation to and from the worksite each day. Volunteers must be 18 years old or older and serve in teams of at least 2 people. To get more information and to register for volunteer housing, please contact our National Volunteer Manager, Trudy Rauch, at 757.226.3407 or send your name, phone number, date you would like to come and number of volunteers in your team to email@example.com. We will call you back within 24-48 hours. We require that all volunteers needing overnight housing register 24-48 hours in advance.Please make sure you receive your email confirmation before heading to Albany because our field teams will not be able to accept anyone who does not have a CONFIRMED RESERVATION.
Volunteer Opportunities: Volunteers are needed to help residents sort their belongings to keep what is salvageable, help with debris removal (a lot of wheelbarrow work), chainsaw crews, serving and preparing meals in our mobile kitchen and installing tarps on damaged roofs.
Please feel free to call me with any questions you have and to register your team for overnight volunteer housing.
Trudy Rauch National Volunteer & U.S. Programs Manager U.S. Disaster Relief Operation Blessing International
977 Centerville Turnpike | Virginia Beach, VA 23463
office: (757) 226-3407|
fax: (757) 277-0231 | web: www.ob.org
Operation Blessing International 977 centerville turnpike | virginia beach, va 23463
office: (757) 226-3407|fax: (757) 277-0231| web:www.ob.org
The amateur radio SKYWARN net based in Fort Wayne will undergo slight changes, effective Feb 1, 2017. Formerly known as the IMO SKYWARN Quadrant Two Net, it will now be referred to as the Allen County SKYWARN Net. The net will continue, however, to accept and relay reports from spotters outside Allen County, including stations in places like DeKalb and Defiance County, which were not officially part of the former quadrant net’s responsibility. Continue reading →
Winter weather is just around the corner in Indiana, which means so are authentic-looking but bogus long-range snowstorm forecasts on social media.
It won’t be long before we see claims that a storm a week or more away will bring huge snow accumulations. Many will have official-looking forecast maps, like the one above (which turned out to be wrong, by the way).
But these posts won’t be the work of professional meteorologists. Many will be the creations of school kids, passing themselves off as weather experts.
This is Winter Weather Preparedness Week in Indiana, so it seems like a good time to prepare readers for the ominous-looking but unreliable snow forecasts they’ll soon see.
To understand what amateur weather enthusiasts put on social media, it helps to know something about the computer programs that professional meteorologists use to guide their forecasts. These programs are called numerical weather prediction models. They simulate Earth’s atmosphere by describing it in a complex series of very complicated mathematical formulas.
The programs built on these formulas run several times a day on supercomputers around the world. Much of the output of these programs is available on the Web, in both numeric and graphical form.
The output of computerized atmosphere models is inherently inaccurate for several reasons, including:
It’s not yet possible to completely describe our chaotic atmosphere in mathematical equations and
The programs don’t have access to enough data about what our atmosphere is doing at the time they run (e.g. what the temperature, wind speed and wind direction are 10,000 feet over any given part of the planet).
Nonetheless, these programs kick out predictions of what the weather might be at any location at any time, as far in the future as 16 days, despite that fact that no computer or human can reliably forecast the weather that far in advance.
Now, imagine a young weather enthusiast who craves attention and loves snowstorms (because they get him out of school). When he sees an indication of heavy accumulations in the output of a single computer model, he might paste that model’s map into a Facebook post in which he writes a dire forecast of impending doom. Such an amateur forecaster might not be aware of (or care about) the model limitations described above. But she’ll love all the “likes” and shares her post receives!
So how do I know what to believe? First, I’m automatically suspicious of any social media post that forecasts specific snowfall amounts more than a couple days in advance. Second, I ignore any forecast that doesn’t come directly from professional sources I trust, such as:
You might not have thought much lately about the disastrous flooding that hit Louisiana August 12-14. You might have assumed that now, three weeks later, the communities there have recovery pretty much in hand. You’d be wrong.
Today, Christian relief organization Operation Blessing put out a new plea for volunteer assistance in Louisiana. As you’ll read, the organization is even prepared to provide lodging for volunteers who travel from outside the area.
Please share this information with anyone you know who might be able to help.
Dear OB Volunteer:
More than 1,500 volunteers have already joined the effort to help and restore hope following the catastrophic floods in Louisiana this past month. With an army of faithful volunteers we have served over 13,500 meals, sent 5 semi-truckloads of emergency relief supplies, and have helped numerous homeowners clear away the flooded debris from their homes – giving them hope to start the rebuilding process. But there is still much more to do!
Volunteers are urgently needed to help sort through and salvage belongings, clear away flooded debris, and mud-out and gut homes – tearing out soggy sheetrock and flooring – so families can start the rebuilding process. Operation Blessing invites you to recruit a team and help restore hope to those who have lost so much.
Operation Blessing is sending volunteers out Monday – Saturday now through September 30. Volunteers who are local to the area (and do NOT need volunteer housing), can go directly to Volunteer Check-In each day at 8:30 AM or Noon. (Please arrive 15 minutes early to complete your volunteer registration.) Volunteers should wear long pants and hard-sole shoes. Operation Blessing will provide tools, safety equipment, a safety briefing, t-shirt, and lunch.
Monday- Saturday at 8:30 AM
Healing Place Church (Denham Springs Campus)
569 Florida Avenue SW
Denham Springs, LA 70726
Volunteer Housing: For volunteers traveling from outside the area, Volunteer Housing is available. You can request housing by sending an email to firstname.lastname@example.org. Please include your name, telephone number, the number of team members, and the dates you would like to serve. You can also call 757-226-3407 to reserve housing. Reservations must be made 48 hours prior to your requested arrival time. Operation Blessing will provide your lodging, meals, tools, and make work assignments. All we ask volunteers to provide is their own transportation to/from the work site each day.
Please note: all volunteers must be at least 18 years old and serve in teams of at least two people.
Thank you for your support and heart to serve those in need. If you have any questions or would like more information, please call 757-226-3407 or email email@example.com.
Kerry L. Dodson National Volunteer & U.S. Programs Manager
U.S. Disaster Relief Operation Blessing International
977 centerville turnpike | virginia beach, va 23463
office: (757) 226-3407|fax: (757) 277-0231 | web: www.ob.org