Narrative:

I was working the r-side at sector 13; and had fed a few den arrivals to denver approach when we went into a shutoff situation due to wind shear at den airport. I was working the den arrivals into a holding stack at wooky when I observed an IFR aircraft (aircraft X) approaching and then entering my airspace without coordination. I brought up the data tag; and called the ramms/tomsn arrival controller at denver approach to determine the aircraft's intentions. The controller who answered the line was not aware of the aircraft's intentions. It appeared the aircraft was on a downwind or delay vector. I then approved a point-out on that aircraft. I notified the controller in charge (controller in charge) of the situation. Within the next few minutes; I observed a second IFR aircraft (aircraft Y) approaching and then entering my airspace without coordination; also apparently on a downwind or delay vector. I called the ramms/tomsn arrival controller to determine the second aircraft's intentions and approve another point-out. Within another few minutes; I observed a third IFR aircraft (aircraft X; a second time) approaching and entering my airspace without coordination; apparently still on vectors to final or a delay vector. I called the ramms/tomsn arrival controller to approve the third point-out. The controller in charge observed these events as they occurred; and reported them to ZDV management.I understood that the denver approach controllers were experiencing a high workload due to wind shear and the precipitation that was displayed southeast of ramms/tomsn inside denver approach's airspace. The uncertain response from the controller who answered the ramms/tomsn line; and the lack of pro-active coordination was apparently due to lack of controller staffing/lack of assistance provided to the controller working the position; such as from a coordinator or assist controller. In the event of a den arrival shutoff by denver approach; which suggests a high workload; it would seem to make sense that arrival controllers be supported by a coordinator or assist controller.

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Original NASA ASRS Text

Title: Denver Center Controller reported uncoordinated airspace violations due to windshear and high workload into DEN Airport.

Narrative: I was working the R-side at Sector 13; and had fed a few DEN arrivals to Denver Approach when we went into a shutoff situation due to wind shear at DEN airport. I was working the DEN arrivals into a holding stack at WOOKY when I observed an IFR aircraft (Aircraft X) approaching and then entering my airspace without coordination. I brought up the data tag; and called the RAMMS/TOMSN arrival controller at Denver Approach to determine the aircraft's intentions. The controller who answered the line was not aware of the aircraft's intentions. It appeared the aircraft was on a downwind or delay vector. I then approved a point-out on that aircraft. I notified the Controller in Charge (CIC) of the situation. Within the next few minutes; I observed a second IFR aircraft (Aircraft Y) approaching and then entering my airspace without coordination; also apparently on a downwind or delay vector. I called the RAMMS/TOMSN arrival controller to determine the second aircraft's intentions and approve another point-out. Within another few minutes; I observed a third IFR aircraft (Aircraft X; a second time) approaching and entering my airspace without coordination; apparently still on vectors to final or a delay vector. I called the RAMMS/TOMSN arrival controller to approve the third point-out. The CIC observed these events as they occurred; and reported them to ZDV management.I understood that the Denver Approach controllers were experiencing a high workload due to wind shear and the precipitation that was displayed southeast of RAMMS/TOMSN inside Denver Approach's airspace. The uncertain response from the controller who answered the RAMMS/TOMSN line; and the lack of pro-active coordination was apparently due to lack of controller staffing/lack of assistance provided to the controller working the position; such as from a coordinator or assist controller. In the event of a DEN arrival shutoff by Denver Approach; which suggests a high workload; it would seem to make sense that arrival controllers be supported by a coordinator or assist controller.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.