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
Tag Archives: SKYWARN spotter
Has technology led people to believe storm spotters are no longer necessary?
It’s amazing how much information I can get on my smartphone, especially weather information. The app stores have dozens — maybe hundreds — of weather apps. They offer much more than today’s forecast. Some even claim to tell users when it will start raining at their locations.
Regardless of how valid or accurate is the information such apps provide, I wonder if they’ve led people to (incorrectly) believe that technology has the weather covered — that there’s little need anymore for human input, such as that provided by trained, SKYWARN® storm spotters.
Do people assume that the same technology that tells them what time the rain will begin can also automatically sense such hazards as tornadoes and severe thunderstorms?
If so, that could help explain why registration is down this year for free National Weather Service storm spotter classes in northern Indiana, northwestern Ohio and southern Lower Michigan.
For example, as of Jan. 25, fewer than 10 people had registered for spotter classes scheduled in Columbia City, Ind. and Glandorf, Ohio. This, despite frequent promotion on social media and other channels by the northern Indiana NWS office and others.
The entire severe weather warning system continues to rely heavily on the first-hand reports of trained spotters.
The truth — as any meteorologist will tell you — is that the entire severe weather warning system continues to rely heavily on the first-hand reports of trained spotters. Why? Because they can see things that radar and other technology cannot.
Radar, for example, can detect rotation in a storm, hundreds to thousands of feet above the ground. But it cannot tell meteorologists whether a funnel cloud has formed or whether a tornado is on the ground. Also, technology cannot tell meteorologists what damage a storm is doing. The NWS needs eye-witness reports from trained spotters for that.
If you’ve ever looked up a scary-looking cloud and wondered if you should worry;
If you’d like a better understand of severe weather to help allay fears;
If you’re a weather enthusiast and would like to apply that interest in a way that provides a life-saving service to your community;
Consider taking the free storm spotter training. You can find a session near you on the website of your local NWS office (type in your ZIP code at www.weather.gov and then look for the link on the forecast page that follows the phrase, “Your local forecast office is”). Some sessions begin as early as next week, so don’t put it off until storm season begins!
As good as weather technology is, it has not replaced they eyes of trained, volunteer storm spotters. Your community needs you!
A weather safety tip you might not have thought of: Footwear
Sandals, especially flip-flops, which are so popular when the weather is warm, are poor choices for severe weather days.
My feet get warm easily. I have a pair of Chacos brand sandals that I wear almost every day during warm weather. But not on days that I might need to serve as a storm spotter.
If severe weather is coming our way, I usually change into a sturdy pair of ankle-supporting hunting boots I bought on sale at Cabela’s, even if I’ll be staying home during the storm.
Why? On word: debris.
After a storm passes, I might have to walk through storm debris, which can include pieces of trees and pieces of buildings. The walking surface might be uneven. Some of the debris might have sharp edges.
I choose to protect my feet from all that, a practice I learned back in the 90s when I served as an emergency medical technician and communications technician on a Disaster Medical Assistance Team. It’s how I dressed my feet every day, even in tropical weather when assisting the victims of Hurricanes Andrew and Marilyn.
My advice: If you’re a storm spotter or storm chaser, get yourself a good pair of boots to wear anytime you’re in the field, even on hot, humid days. And no matter who you are, if you ever have to take shelter in your house from a coming storm, take the most protective footwear you have with you to the basement, interior room, etc. Put them on after the storm, before you step outside to survey the damage. Your feet will be much safer.
NWS Changing Storm Warnings in Regional Experiment
Used with permission, Jeff Koterba/Omaha World-Herald. |
Does your mother know the difference between the damage that can be done by 58 mph winds and 91 mph winds? I didn’t think so. Everyone knows that 91 mph is worse than 58 mph, but Mom probably doesn’t know how much worse. She’s not alone. And that’s part of the reason so many people were surprised by how much damage the June 29, 2012 derecho did.
When a thunderstorm produces winds of at least 58 mph the National Weather Service (NWS) issues a severe thunderstorm warning. The June 29 derecho produced a measured wind gust at Fort Wayne International Airport of 91 mph. What does NWS do when thunderstorm winds reach 91 mph? It issues … a severe thunderstorm warning.
Beginning April 1, 2013, the NWS Northern Indiana weather forecast office will join all other offices in the NWS central region in an experiment to test of a new type of storm warning. “Impact-based warnings” are designed to help people understand the difference between barely severe storms and storms like the one we had June 29, by indicating what the storms might do.
For example, at 3:09 p.m. June 29, NWS issued a severe thunderstorm warning for several northwestern Ohio counties (Example 1). It included the following text: “This storm has a history of producing destructive winds in excess of 80 mph. Seek shelter now inside a sturdy structure and stay away from windows!” Notice that the warning mentioned a wind speed and action to take but said nothing about what that wind might do.
Example 1: 2012 Severe Thunderstorm Warning
BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
309 PM EDT FRI JUN 29 2012
THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR…
WESTERN ALLEN COUNTY IN WEST CENTRAL OHIO…
SOUTHERN DEFIANCE COUNTY IN NORTHWEST OHIO…
PAULDING COUNTY IN WEST CENTRAL OHIO…
VAN WERT COUNTY IN WEST CENTRAL OHIO…
SOUTH CENTRAL HENRY COUNTY IN NORTHWEST OHIO…
PUTNAM COUNTY IN WEST CENTRAL OHIO…
* UNTIL 400 PM EDT
* AT 304 PM EDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 80 MPH. THESE SEVERE STORMS WERE LOCATED ALONG A
LINE EXTENDING FROM 27 MILES NORTHWEST OF ANTWERP TO 12 MILES
WEST OF PAYNE TO 24 MILES SOUTHWEST OF OHIO CITY…AND
MOVING EAST AT 65 MPH.
* LOCATIONS IN THE PATH OF SEVERE THUNDERSTORMS INCLUDE…
PAYNE…ANTWERP AND CONVOY…
PAULDING…VAN WERT AND OHIO CITY…
SPENCERVILLE AND DEFIANCE…
DELPHOS…OTTOVILLE AND CONTINENTAL…
ELIDA…
OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
WORSTVILLE…TIPTON…MIDDLEBURY…MARK CENTER…BRICETON…SCOTT…
LATTY…HAVILAND…CECIL…CAVETT…THE BEND AND SHERWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS LINE OF
SEVERE THUNDERSTORMS. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH
LITTLE OR NO WARNING. IF A TORNADO IS SPOTTED…ACT QUICKLY AND MOVE
TO A PLACE OF SAFETY IN A STURDY STRUCTURE…SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF
80 MPH. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS!
TO REPORT SEVERE WEATHER…CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTHERN INDIANA.
&&
LAT…LON 4064 8404 4064 8410 4065 8411 4065 8421
4068 8422 4068 8437 4071 8445 4072 8445
4072 8449 4084 8480 4135 8472 4127 8400
TIME…MOT…LOC 1908Z 269DEG 58KT 4154 8487 4104 8487
4054 8487
WIND…HAIL 80MPH <.50IN
Example warnings courtesy Michael Lewis, warning coordination meteorologist, NWS Northern Indiana
Had impact-based warnings been in effect that day, the same warning would have included language like this: “Impact … damage to vehicles…buildings…roofs and windows. Trees uprooted and large branches up to 9 inches in diameter down.” (Example 2). Impact-based warnings will also tell us whether a storm is indicated by radar or actually observed by humans.
Example 2: Mock Impact-Based Severe Thunderstorm Warning
BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
309 PM EDT FRI JUN 29 2012
THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR…
WESTERN ALLEN COUNTY IN WEST CENTRAL OHIO…
SOUTHERN DEFIANCE COUNTY IN NORTHWEST OHIO…
PAULDING COUNTY IN WEST CENTRAL OHIO…
VAN WERT COUNTY IN WEST CENTRAL OHIO…
SOUTH CENTRAL HENRY COUNTY IN NORTHWEST OHIO…
PUTNAM COUNTY IN WEST CENTRAL OHIO…
* UNTIL 400 PM EDT
* AT 304 PM EDT…A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM 27
MILES NORTHWEST OF ANTWERP TO 12 MILES WEST OF PAYNE TO 24 MILES
SOUTHWEST OF OHIO CITY…AND MOVING EAST AT 65 MPH.
HAZARD…GREATER THAN 80 MPH WIND GUSTS.
SOURCE…TRAINED SPOTTERS.
IMPACT…DAMAGE TO VEHICLES…BUILDINGS…ROOFS AND WINDOWS. TREES
UPROOTED AND LARGE BRANCHES UP TO 9 INCHES IN DIAMETER
DOWN.
* LOCATIONS IN THE PATH OF SEVERE THUNDERSTORMS INCLUDE…
PAYNE…ANTWERP AND CONVOY…
PAULDING…VAN WERT AND OHIO CITY…
SPENCERVILLE AND DEFIANCE…
DELPHOS…OTTOVILLE AND CONTINENTAL…
ELIDA…
PRECAUTIONARY/PREPAREDNESS ACTIONS…
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF
80 MPH. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS!
TO REPORT SEVERE WEATHER…SEND REPORTS VIA TWITTER WITH THE HASHTAG #NWSIWX.
&&
LAT…LON 4064 8404 4064 8410 4065 8411 4065 8421
4068 8422 4068 8437 4071 8445 4072 8445
4072 8449 4084 8480 4135 8472 4127 8400
TIME…MOT…LOC 1908Z 269DEG 58KT 4154 8487 4104 8487
4054 8487
HAIL…<.50IN
WIND…>80MPH
The impact-based warnings experiment includes three forms of tornado warnings, based on the storm’s damage threat. Tornadoes with “considerable” and “catastrophic” damage threats will have new “tags” at the very bottom of the warnings, for example, “tornado damage threat … considerable” and “tornado damage threat … catastrophic.” Note that NWS has been including tags at the bottoms of warnings for the past three to five years (they’re highlighted at the bottoms of the example warnings above). The impact-based warnings experiment expands on these tags to enable users and automated systems to glean information more quickly.
A basic tornado warning will have no damage threat tag. It will include impact language such as, “Significant house and building damage possible.” The vast majority of tornado warnings issued by the Northern Indiana NWS office will look like this.
A “damage threat considerable” tornado warning will include impact language such as, “Major house and building damage likely and complete destruction possible.”
A “damage threat catastrophic” tornado warning will include impact language such as, “This is a life threatening situation. You could be killed if not underground or in a tornado shelter.” The NWS will rarely use the catastrophic language, saving it for storms like the 2011 Joplin, Missouri tornado.
More information about impact-based warnings, including example tornado warnings and a map of NWS offices participating in the experiment, is available on the NWS website.
When a warning is issued, it will be important to access the entire text of the warning. You can do so via NOAA Weather Radio, the Web and some email services. Make sure your friends and family also know how to get the full text of warnings, so they’ll benefit from the impact statements.
Impact-based warnings will make detailed, timely reports from SKYWARN storm spotters even more important. More than ever, NWS will need to know what storms are doing near you; exactly what they’re doing. Did tree limbs come down? How big? Did you see structure damage? Was it just a few shingles blown off or part of a wall blown down? And NWS meteorologists will need that information immediately, especially when a storm system moves as fast as the June 29 derecho did (60 mph). The tornado damage threat tags are especially dependent on spotter reports. Radar data alone is insufficient for NWS meteorologists to determine appropriate damage threat tags.
If we provide the information NWS needs, when it needs it, impact-based warnings could lead to fewer comments like one often heard after the June 29 derecho: “I had no idea it would be that bad.”
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Pay Attention to Special Weather Statements
In the December issue of Allen County HamNews, I hinted at a possible change in reporting criteria for SKYWARN spotters. During a conference call with leaders of IMO SKYWARN, NWS Warning Coordination Meteorologist Michael Lewis discussed a goal for spotter reports. Lewis wants reports to be based more on weather impact than on measurements such as wind speed or hail size. For example, if the weather does damage or causes injury, Lewis wants to know about it, even if conditions do not meet traditional reporting criteria.
NWS Announces Plans for Local SKYWARN Training
- Why to report
- What to report
- How to report (including telephone, ham radio, etc. and new tools like social media)
- Where to obtain the reports of others (for situational awareness)
- Skywarn Spotter Training — https://www.meted.ucar.edu/training_course.php?id=23 — (a two-module course including modules on the role of the spotter and basics of convection)
NWS SKYWARN Training Suspended, SKYWARN Operations Continue
- Northern Indiana NWS SKYWARN Information Web page (http://www.crh.noaa.gov/iwx/?n=nwsnorthernindianaskywarnpage)
- “Role of the SKYWARN spotter” from The COMET® Program (http://www.meted.ucar.edu/spotter_training/spotter_role/)
- “SKYWARN Spotter Convective Basics” from The COMET® Program (http://www.meted.ucar.edu/spotter_training/convective/)
- “Spotter Report Data Quality” from the NWS Warning Decision Training Branch (http://wdtb.noaa.gov/modules/spotters/player.html)
- “Storm Spotter Training” from the Des Moines, Iowa NWS office (http://www.crh.noaa.gov/dmx/presentations/spotter-training/NWS-Spotter-Training_files/v3_document.htm)
- Spotter Network (www.spotternetwork.org)
- SKYWARN Weather Spotter’s Field Guide (http://www.nws.noaa.gov/om/brochures/SGJune6-11.pdf)
Are Ham Radio SKYWARN Spotters Becoming Irrelevant?
- Education. By learning all we can about meteorology, we can assure that all our reports are valid and valuable.
- Technology. By becoming familiar with and using other technologies to supplement ham radio (e.g. tweeting photos from smart phones), we can provide a more complete service while demonstrating our ability to stay on the “cutting edge.”
- Procedures. By insisting on sounding as professional as possible when we communicate, we can build credibility among any IWT members who monitor or receive our reports.
Keeping the Mic on its Hook
Storm Spotters as Advocates
If you’re a trained SKYWARN storm spotter, who in your family knows more than you about severe weather? How about in your neighborhood, place of employment or place of worship?
Unlike most of your family, friends and coworkers, you know that a tornado watch means that conditions are favorable for the development of tornadoes and a tornado warning means it’s time to take cover. You know that flooding kills more people in northern Indiana than do tornadoes. You know that most people cannot rely on tornado sirens to warn them of danger.
Chances are, in most (if not all) of your circles, you are the severe weather expert.
I’d like to propose, therefore, that you have more responsibility than observing and reporting severe weather. You should also be a weather safety advocate.
I wrote in a previous post that many residents of Joplin, Missouri initially ignored warnings of the tornado that would devastate part of their city. Compared to years past, the National Weather Service is able to issue more specific warnings earlier than ever before. But for too many people, these advances are wasted, because they don’t know how to react to the information. That’s where you come in.
Be an advocate. Advise your friends and family to buy weather alert radios. Help program the radios. Help them learn how to interpret and react to severe weather information. Make sure they know that a tornado warning means “take shelter,” not “go outdoors to look.” Teach them they’re not necessarily in the clear just because 10 minutes have passed without a tornado.
We can be the best possible weather spotters but if the people we’re trying to protect don’t know what to do, what’s the point?