Dothan tower controller reported winds gusting up to 28 knots which led to an aircraft going around....

Attributes
ACN	1456947
Time
Date	201706
Local Time Of Day	1801-2400
Place
Locale Reference	DHN.Tower
State Reference	AL
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Make Model Name	Super King Air 200
Flight Phase	Final Approach
Route In Use	Other VFR PATTERN
Flight Plan	VFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Function	Supervisor / CIC Local Flight Data / Clearance Delivery Ground
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Military 20 Air Traffic Control Non Radar 10 Air Traffic Control Radar 20 Air Traffic Control Supervisory 20 Air Traffic Control Time Certified In Pos 1 (mon) 5 Air Traffic Control Time Certified In Pos 1 (yrs) 13
Events
Anomaly	ATC Issue All Types Inflight Event / Encounter Weather / Turbulence

Narrative:

Squall line moving in from the north and I could see the ragged edges of the clouds. I informed the aircraft that I expected the winds to pick up shortly. About 45 seconds later the tower swayed and vibrated but the ASOS only reported 12kts on the wind. I informed aircraft X that I was experiencing gusts and estimated them above 25kts. ASOS still reporting 12kts. A pilot holding short for departure reported possible wind shear at the approach end runway 32; and I observed a large cloud of dust rising up from the field. Aircraft X conducted a go around and reported being 'bounced around really good'. I observed a decrease of 20kts radar indicated airspeed on the stars. All of this took about 2 minutes of time; finally the ASOS reported wind 34019g28kts. We do not have direct wind reading instruments at dothan! This placed a flight crew in a dangerous situation by not being able to get a timely and accurate reading of the wind.

Original NASA ASRS Text

Title: Dothan Tower Controller reported winds gusting up to 28 knots which led to an aircraft going around. The airport was reported to not having direct wind reading instruments.

Narrative: Squall line moving in from the north and I could see the ragged edges of the clouds. I informed the aircraft that I expected the winds to pick up shortly. About 45 seconds later the tower swayed and vibrated but the ASOS only reported 12kts on the wind. I informed Aircraft X that I was experiencing gusts and estimated them above 25kts. ASOS still reporting 12kts. A pilot holding short for departure reported possible wind shear at the approach end RWY 32; and I observed a large cloud of dust rising up from the field. Aircraft X conducted a go around and reported being 'bounced around really good'. I observed a decrease of 20kts radar indicated airspeed on the STARS. All of this took about 2 minutes of time; finally the ASOS reported wind 34019G28kts. We do not have direct wind reading instruments at Dothan! This placed a flight crew in a dangerous situation by not being able to get a timely and accurate reading of the wind.

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.

Dothan tower controller reported winds gusting up to 28 knots which led to an aircraft going around. The airport was reported to not having direct wind reading instruments.