Cellular Emergency Alert System To Be Tested Wednesday, October 3 (that’s tomorrow!)

The national emergency alert system, along with the wireless emergency alert system (the thing that triggers your phone to alert you to severe weather and AMBER alerts) will be tested tomorrow afternoon. I’ve copied below a message from the county’s emergency management office.


Integrated Public Alert and Warning System (IPAWS) National Test of the Wireless Emergency Alerts (WEA) and Emergency Alert System (EAS)

The National EAS and WEA test will be held on the backup date of October 3, 2018, beginning at 2:18 p.m. EDT.

The Federal Emergency Management Agency (FEMA), in coordination with the Federal Communications Commission (FCC), will conduct a nationwide test of the Wireless Emergency Alerts (WEA) and Emergency Alert System (EAS) on the backup date of October 3, 2018 due to ongoing response efforts to Hurricane Florence. The WEA portion of the test commences at 2:18 p.m. EDT, and the EAS portion follows at 2:20 p.m. EDT. The test will assess the operational readiness of the infrastructure for distribution of a national message and determine whether improvements are needed.

The WEA test message will be sent to cell phones that are connected to wireless providers participating in WEA. This is the fourth EAS nationwide test and the first national WEA test. Previous EAS national tests were conducted in November 2011, September 2016,  and September 2017 in collaboration with the FCC, broadcasters, and emergency management officials in recognition of FEMA’s National Preparedness Month.

Cell towers will broadcast the WEA test for approximately 30 minutes beginning at 2:18 p.m. EDT. During this time, WEA compatible cell phones that are switched on, within range of an active cell tower, and whose wireless provider participates in WEA should be capable of receiving the test message. Some cell phones will not receive the test message, and cell phones should only receive the message once. The WEA test message will have a header that reads “Presidential Alert” and text that says:

“THIS IS A TEST of the National Wireless Emergency Alert System. No action is needed.”

The WEA system is used to warn the public about dangerous weather, missing children, and other critical situations through alerts on cell phones. The national test will use the same special tone and vibration as with all WEA messages (i.e. Tornado Warning, AMBER Alert). Users cannot opt out of receiving the WEA test.

The EAS is a national public warning system that provides the President with the communications capability to address the nation during a national emergency.

The test is made available to EAS participants (i.e., radio and television broadcasters, cable systems, satellite radio and television providers, and wireline video providers) and is scheduled to last approximately one minute. The test message will be similar to regular monthly EAS test messages with which the public is familiar. The EAS message will include a reference to the WEA test:

“THIS IS A TEST of the National Emergency Alert System. This system was developed by broadcast and cable operators in voluntary cooperation with the Federal Emergency Management Agency, the Federal Communications Commission, and local authorities to keep you informed in the event of an emergency. If this had been an actual emergency an official message would have followed the tone alert you heard at the start of this message. A similar wireless emergency alert test message has been sent to all cell phones nationwide. Some cell phones will receive the message; others will not. No action is required.”

The test was originally planned for September 20, 2018 but has been postponed until October 3, 2018 due to ongoing response efforts to Hurricane Florence.

Emergency siren tests for the season begin this weekend

The spring severe weather season is just around the corner. To prepare, the county’s and city’s regular outdoor warning siren system tests resume this month. Here are their schedules:

Washtenaw County-operated sirens will be tested at noon on the first Saturday of every month from March through October. This means that this Saturday, March 3, at noon is the first Washtenaw County siren test of the year.

The City of Ann Arbor’s sirens are tested every second Tuesday of the month at 1:00 pm. Testing of sirens is performed from March through November. This means that this Tuesday, March 7, at 1 pm is the first City siren test of the year.

If there’s a severe weather threat on the afternoon of a test, the test will be delayed until the following month.

Aside from scheduled tests, Ann Arbor’s sirens sound in case of:

  • A tornado warning anywhere in Washtenaw County.
  • A severe thunderstorm warning with confirmed winds of 75 miles per hour or greater anywhere in Washtenaw County.
  • A hazardous material spill that requires immediate protective action.
  • Any other local emergency that requires immediate action or for other national threats such as an imminent threat alert from the U.S. Department of Homeland Security – National Terrorism Advisory System.

When you hear these sirens, you should go inside, take cover, and tune in to one of the county’s emergency broadcasters for further information:

  • WEMU 89.1 FM
  • WWWW 102.9 FM
  • WQKL 107.1 FM (City of Ann Arbor only)
  • WTKA 1050 AM (City of Ann Arbor only)
  • WLBY 1290 AM (City of Ann Arbor only)

For the City of Ann Arbor, emergency alerts will also be broadcast on Community Television Network (channels 16, 17, 18 and 19), emailed to “emergency alerts” subscribers, and shared via the city’s Facebook and Twitter pages.

Risk of severe thunderstorms this afternoon/early evening

The National Weather Service has determined there is an “enhanced” risk of severe weather in southeastern Michigan this afternoon, primarily from noon to 8pm. (This document outlines what “enhanced risk” means.)

Today, this means that we can expect thunderstorms across the area, some of which will likely be severe. Risks for today’s storms include damaging wind gusts (with fairly high probability) and hail up to 1 inch in diameter. Locally heavy rainfall is possible.

There is a small risk of tornados occurring with any severe storms that develop this afternoon.

Some things to keep in mind:

  • Now would be a good time to clear blockages from storm drains in your neighborhood, if you’re home, to prevent your streets from flooding.
  • Don’t walk or drive through flooded areas. It takes just 12 inches of fast-moving floodwater to carry away a small car, while 2 feet of rushing water can carry away most vehicles.
  • Stay safe from lightning.

Tune into our local emergency broadcasters for timely updates and alerts this afternoon. Finally, it might be useful to review what a severe weather watch vs. a warning means:

Tornado Watch: The Storm Prediction Center (SPC) issues Public Tornado Watches to alert the public, media and emergency managers to organized thunderstorms forecast to produce three or more tornadoes or any tornado which could produce EF2 or greater damage.

Severe Thunderstorm Watch: The Storm Prediction Center (SPC) issues Public Severe Thunderstorm Watches to alert the public, media and emergency managers to organized thunderstorms forecast to produce six and more hail events of 1 inch (quarter) diameter or greater, or damaging winds of 50 knots (58 mph) or greater.

Tornado Warning: … are issued when there is radar indication and/or reliable spotter reports of a tornado.

Severe Thunderstorm Warning: … are issued when there is radar indication and/or reliable spotter reports of hail of 1 inch (quarter) diameter or greater, and/or wind gusts of 50 knots (58 mph) or greater.

Emergency siren tests begin this weekend

The spring severe weather season is just around the corner. To prepare, the county’s and city’s regular outdoor warning siren system tests resume this month. Here are their schedules:

Washtenaw County-operated sirens will be tested at noon on the first Saturday of every month from March through October. This means that this Saturday, March 4, at noon is the first Washtenaw County siren test of the year.

The City of Ann Arbor’s sirens are tested every second Tuesday of the month at 1:00 pm. Testing of sirens is performed from March through November. This means that this Tuesday, March 7, at 1 pm is the first City siren test of the year.

If there’s a severe weather threat on the afternoon of a test, the test will be delayed until the following month.

Outside of scheduled tests, these sirens sound in case of:

  • A tornado warning anywhere in Washtenaw County.
  • A severe thunderstorm warning with confirmed winds of 75 miles per hour or greater anywhere in Washtenaw County.
  • A hazardous material spill that requires immediate protective action.
  • Any other local emergency that requires immediate action or for other national threats such as an imminent threat alert from the U.S. Department of Homeland Security – National Terrorism Advisory System.

When you hear these sirens, you should go inside, take cover, and tune in to one of the county’s emergency broadcasters for further information:

  • WEMU 89.1 FM
  • WWWW 102.9 FM
  • WQKL 107.1 FM (City of Ann Arbor only)
  • WTKA 1050 AM (City of Ann Arbor only)
  • WLBY 1290 AM (City of Ann Arbor only)

For the City of Ann Arbor, emergency alerts will also be broadcast on Community Television Network (channels 16, 17, 18 and 19), emailed to “emergency alerts” subscribers, and shared via the city’s Facebook and Twitter pages.

For more information:

Winter Storm this weekend

Saturday (Dec. 10) we will see scattered snow showers across the area, leading to small accumulations and, at times, poor visibility. Overnight we’ll see widespread, light snow, with only a small accumulation by Sunday morning.

On Sunday (Dec. 11) snowfall will increase throughout the day, with moderately heavy snowfall in the late afternoon and evening. By the time the storm ends Sunday night, the National Weather Service is predicting a total of 5-9 inches of accumulation.

(Anecdotally, in Ann Arbor proper I’d expect somewhere between 4-8 inches — for whatever reason our totals usually seem to be a bit below those predicted for the region.)

Roads will be slick on Sunday. Drive carefully.