AAVSO Sudden Ionospheric Disturbance Report
September 2021

Observers:
A118	A119	A120	A122	A134	A143	A146	
A148	A149	A150	A152	A153	A96	A97	

YYMMDD		Event Peak		Importance
210901		1329			1	A152  - XRA
210901		1336			1-	A97   - XRA
210908		0308			1-	A122  - XRA
210908		1027			2
210908		1223			2	A119  - XRA
210908		1256			1+
210908		1729			2+
210909		0831			2
210911		0451			1-	A122  - XRA
210917		0423			1	A120  - XRA
210917		0441			1-	A122  - QUAL
210921		0909			1
210921		1154			1-	A152  - XRA
210921		1154			1+
210923		0251			2	A122  - XRA
210923		0443			1-	A96   - XRA
210923		1529			2+
210923		1530			2+
210923		1543			2	A97   - QUAL
210925		1915			1-
210926		1541			1-	A146  - XRA
210928		0630			2+	A96   - XRA
210929		0223			2+	A122  - XRA
210929		2158			1-	A153  - XRA
210929		2158			1-	A153  - XRA
210929		2229			2+	A122  - FLA
210930		1514			1-	A146  - XRA
210930		1514			1-	A146  - XRA



**************************************************
Importance Summary - Sep 2021
	1- events: 12
	1  events:  3
	1+ events:  2
	2  events:  5
	2+ events:  6
	3  events:  0
	3+ events:  0
 ------------------
   Total events: 28