Emergency Systems Testing

Denver to Test Outdoor Sirens and Reverse Emergency Notifications from May 9 to May 21 

Safety agencies within the City and County of Denver plan to test Outdoor Warning Sirens and opt-in Reverse Emergency Notification alerts (REN alerts) from May 9 through May 21. These tests will increase Denver’s overall preparedness by ensuring the systems are properly working should we need to deploy them in a real emergency.  

Prior to testing, we encourage residents to sign up to receive REN alerts. These alerts are used by Denver 9-1-1 and inform the public via voice call, text message, or email of situations that may impact life safety and how they can remain safe. People are able to enter multiple address entries and do not need to be a resident to register, therefore non-residents who work in Denver or have children in Denver schools are eligible to sign up.

Sign up for Reverse Emergency Notification Alerts (REN Alerts) 

Below is a schedule of planned testing per neighborhood over the next two weeks. Please call 720-913-2059 for additional questions about the REN Alerts or if you have issues signing up OR opting out. 

Week 1 

Monday, May 9, 2022

REN ALERTS

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on May 9th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: Highlands 

10:00 AM: Chaffee Park & City Park 

12:00 PM: West Highlands

2:00 PM: Sunnyside & Globeville 

4:00 PM: Berkeley 

6:00 PM: Belcaro 

Tuesday, May 10, 2022

REN ALERTS 

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on May 10th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: Sun Valley

10:00 AM: West Colfax 

12:00 PM: Sloan Lake

2:00 PM: Jefferson Park

4:00 PM: Gateway/ Green Valley Ranch 

6:00 PM: Barnum West

Wednesday, May 11, 2022

OUTDOOR WARNING SIREN TEST 

Outdoor Warning Sirens will sound for approximately three minutes around Denver and at Denver International Airport at 11 AM on Wednesday, May 11th.  


REN ALERTS

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on May 11th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: City Park West 

10:00 AM: Cole & Skyland 

12:00 PM: Elyria-Swansea 

2:00 PM: Clayton & Whittier 

4:00 PM: Hampden

Thursday, May 12, 2022

REN Alerts 

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on May 12th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: Congress Park 

10:00 AM: South Park Hill 

12:00 PM: Northeast Park Hill 

2:00 PM: Cheesman Park 

4:00 PM: Union Station 

Friday, May 13, 2022

REN Alerts 

Below is a list of times and and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on Friday, May 13th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: Westwood

10:00 AM: North Park Hill 

12:00 PM: Valverde & Barnum 

2:00 PM: Athmar Park

4:00 PM: Ruby Hill 

6:00 PM: Montbello 

Saturday, May 14, 2022

REN Alerts 

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on Saturday, May 14th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: Lincoln Park 

10:00 AM: Villa Park

12:00 PM: Auraria & Rosedale 

2:00 PM: Central Business District 

4:00 PM: North Capitol Hill 

6:00 PM: Five Points 

 

 

 

Week 2 

Monday, May 16, 2022

REN Alerts

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on Monday, May 16th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: Speer 

10:00 AM: Baker 

12:00 PM: Wash Park 

2:00 PM: Wash Park West 

4:00 PM: Country Club

6:00 PM: Capitol Hill

Tuesday, May 17, 2022

REN Alerts 

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on Monday, May 16th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: Hale 

10:00 AM: Montclair 

12:00 PM: Washington/ Virginia Vale 

2:00 PM: Hilltop 

4:00 PM: Regis 

6:00 PM: Cherry Creek 


Wednesday, May 18, 2022

REN Alerts

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on Wednesday, May 18th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: Harvey Park 

10:00 AM: Mar Lee 

12:00 PM: Fort Logan 

2:00 PM: Lowry Field 

4:00 PM: Bear Valley 

6:00 PM: University 

Thursday, May 19, 2022

REN Alerts

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on Monday, May 19th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: Marston 

10:00 AM: University Park 

12:00 PM: Cory-Merrill 

2:00 PM: Harvey Park South 

4:00 PM: Platt Park 

6:00 PM: Central Park 

Friday, May 20, 2022

REN Alerts

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on Friday, May 20th. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: University Hills 

10:00 AM: Southmoor Park

12:00 PM: Virginia Village 

2:00 PM: Goldsmith 

4:00 PM: Wellshire 

Saturday, May 21, 2022

REN Alerts

Below is a list of times and neighborhoods where Reverse Emergency Notification Alerts (REN Alerts) will be sent to subscribed phones on Saturday, May 21st. To register your phone to receive these alerts, visit our sign up page and create an account. 

8:00 AM: Windsor 

10:00 AM: Kennedy & Indian Creek 

2:00 PM: East Colfax 

4:00 PM: Hampden South