AAVSO Sudden Ionospheric Disturbance Report
December 2025

Observers:
A118	A119	A131	A136	A138	A141	
A148	A150	A152	A153	A154	

YYMMDD		Event Peak		Importance
251201		0951			1	A136  - QUAL
251201		1005			1+
251201		1014			3+	A154  - XRA
251201		1422			1-	A131  - XRA
251201		1601			1-	A131  - QUAL
251201		1629			1-
251202		1330			1	A150  - QUAL
251202		1349			1-	A150  - QUAL
251202		1406			1-
251202		1426			1-	A131  - QUAL
251202		1744			1-	A150  - XRA
251202		1841			1	A148  - QUAL
251202		2037			1-
251203		1242			1-	A152  - XRA
251203		1258			3+	A154  - XRA
251203		1419			1-	A152  - XRA
251204		1239			1+	A150  - QUAL
251205		1627			2+	A150  - XRA
251205		1843			2+	A141  - XRA
251205		1843			2+	A141  - XRA
251205		2010			1-	A148  - XRA
251205		2033			2	A148  - QUAL
251206		0944			1-
251206		1643			2+	A148  - XRA
251206		1921			2
251206		2039			2
251207		1203			1
251207		2037			1	A148  - XRA
251208		1229			1-
251208		1241			2
251208		1258			1+
251208		1302			1+
251208		1554			1	A148  - XRA
251208		2118			2
251208		2233			2+	A138  - XRA
251209		1324			1-	A131  - XRA
251209		1515			2
251209		2105			1-	A148  - XRA
251210		0955			1-
251210		1035			2	A131  - XRA
251210		1343			1
251210		1343			1
251210		2209			1-	A148  - XRA
251210		2311			1-	A153  - XRA
251211		0938			1-	A131  - XRA
251211		1020			1-	A131  - XRA
251211		1521			1	A150  - XRA
251211		1528			1	A148  - XRA
251211		1547			1
251211		1832			1-	A148  - QUAL
251212		0917			1	A136  - XRA
251212		1953			2	A148  - QUAL
251213		1050			1+
251213		1355			1-	A148  - QUAL
251213		1859			1+	A148  - QUAL
251213		1911			2+	A148  - QUAL
251213		1921			2+	A148  - QUAL
251214		1239			1-	A131  - XRA
251214		1733			1	A148  - QUAL
251215		1224			1-	A136  - XRA
251216		1742			1	A148  - QUAL
251216		1944			1+	A148  - QUAL
251219		1540			2+	A152  - QUAL
251221		1820			2
251221		1823			2
251221		1829			2+
251221		1927			1	A153  - FLA
251226		0915			1+
251228		2112			1
251228		2214			2	A153  - QUAL
251228		2253			1-	A153  - XRA
251229		2040			1	A148  - XRA
251229		2040			1	A148  - XRA
251229		2140			1+	A153  - QUAL
251229		2140			1+	A153  - QUAL
251230		0846			1	A152  - XRA
251230		1556			1-	A148  - XRA
251230		1556			1-	A148  - XRA
251231		1337			2+
251231		1337			2+
251231		1348			2+
251231		1348			2+
251231		1430			2+	A141  - QUAL
251231		1506			3+	A141  - QUAL



**************************************************
Importance Summary - Dec 2025
	1- events: 27
	1  events: 19
	1+ events: 10
	2  events: 11
	2+ events: 14
	3  events:  0
	3+ events:  3
 ------------------
   Total events: 84