SECURITY
WEATHER BULLETIN FOR METAREA XXI
ISSUED BY THE ARCTIC AND ANTARCTIC RESEARCH INSTITUTE
ST PETERSBURG ON THE 31 JULY 2026 AT 0600UTC
PART 1
AT 310600UTC
GALE WARNING
17181, 17183, 17184, 17191, 17193
FROM 310600UTC TO 010600UTC
WINDS W 17 TO 22 MS
PART 2
SYNOPSIS AT 310600UTC
HIGH 1009 HPA 71N 139E MOVING E 20 KMH WEAKENS
LOW 990 HPA 84N 130E MOVING S/W 30 KMH FILLING
LOW 996 HPA 71N 162E MOVING S/E 20 KMH FILLING
ICE AT 301200UTC
17243
ICE N TO 7705N 12500E, 7721N 13005E.
17243-17151
ICE E TO 7721N 13005E, 7659N 13049E, 7500N 12828E,
7444N 12812E.
17151
ICE S TO 7444N 12812E, 7444N 12500E.
17151
ICE NE TO 7400N 12500E, 7338N 12611E, 7335N 12750E,
7314N 12923E.
17151-17153-17154
ICE E TO 7314N 12923E, 7300N 12944E, 7249N 13000E,
7235N 13019E, 7218N 13000E, 7210N 12951E, 7145N 13000E,
7138N 13002E, 7136N 13000E, 7116N 12936E.
17154-17163-17161
ICE NW TO 7154N 13245E, 7158N 13334E, 7215N 13329E,
7209N 13453E, 7209N 13500E, 7220N 13640E, 7242N 13716E,
7302N 13611E, 7323N 13639E, 7318N 13747E, 7324N 13831E,
7338N 13902E, 7345N 13852E, 7357N 13834E, 7403N 13854E,
7356N 13935E, 7403N 14006E.
17161-17162
ICE N TO 7413N 14105E, 7416N 14121E, 7412N 14418E,
7413N 14430E, 7416N 14815E, 7443N 15219E.
17162-17244
ICE SW TO 7443N 15219E, 7509N 15125E, 7530N 14939E,
7533N 14922E, 7603N 14746E.
17244
ICE SE TO 7603N 14746E, 7542N 14530E.
17244
ICE SW TO 7542N 14530E, 7559N 14251E, 7620N 14204E.
17244-17250-17260
ICE N TO 7620N 14204E, 7659N 14414E, 7717N 14722E,
7718N 15059E, 7656N 15353E, 7653N 15634E, 7626N 16000E,
7617N 16104E, 7609N 16437E, 7613N 16611E, 7530N 16747E,
7510N 16829E.
17260
ICE SE TO 7510N 16829E, 7447N 16508E, 7408N 16357E.
17260
ICE S TO 7408N 16357E, 7426N 15740E.
17260-17170
ICE E TO 7426N 15740E, 7300N 15346E, 7258N 15342E,
7214N 15552E, 7126N 15619E, 7117N 15653E.
17170-17181-17183-17184-17193-17194
ICE N TO 7117N 15653E, 7113N 15800E, 7059N 16051E,
7035N 16142E, 7004N 16244E, 7003N 16400E, 7002N 16435E,
7035N 16536E, 7046N 16557E, 7036N 16800E, 7033N 16832E,
7010N 17055E, 7010N 17100E, 7008N 17253E, 6957N 17445E,
6951N 17501E.
17220
ICE NW TO 6600N 16908W, 6608N 16900W.
17220
ICE W TO 6610N 16900W, 6617N 16908W, 6620N 16931W,
6645N 17011W, 6703N 16930W, 6718N 16917W, 6719N 16900W.
17220
ICE S TO 6742N 16900W, 6739N 16927W, 6725N 17003W,
6722N 17042W, 6713N 17112W.
17220-17210
ICE SW TO 6713N 17112W, 6747N 17152W, 6827N 17218W,
6832N 17317W, 6908N 17410W, 6926N 17520W, 6934N 17550W.
17210-17200
ICE W TO 6934N 17550W, 7030N 17544W, 7032N 17543W.
17200-17220
ICE N TO 7032N 17543W, 7048N 17442W, 7030N 17424W,
7013N 17409W, 6949N 17314W, 6933N 17015W, 6934N 16900W.
PART 3
FORECAST FROM 310600UTC TO 010600UTC
17120
WINDS N/W W 8 TO 13 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 4 TO 9 KM LOCALLY WEAK PRECIPITATION
17130
WINDS N/E N 7 TO 12 MS
AFTER 311800UTC S/E E 3 TO 8 MS
TEMP PLUS 8 TO PLUS 13 DEGREES
VIS 4 TO 9 KM IN FOG 0.3 TO 0.8 KM
LOCALLY WEAK RAIN FOG
17140
WINDS S S/W 9 TO 14 MS
AFTER 311200UTC N/W 6 TO 11 MS
AFTER 010300UTC S S/E 8 TO 13 MS
TEMP PLUS 5 TO PLUS 10 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
SEAS 1.3 TO 2.5 M AFTER 311200UTC 1.3 TO 2.4 M
AFTER 010300UTC 1.3 TO 2.3 M
17151
WINDS S S/W 10 TO 15 MS
AFTER 311200UTC W 7 TO 12 MS
TEMP PLUS 2 TO PLUS 7 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
SEAS 2.0 TO 3.6 M AFTER 311200UTC 1.6 TO 3.0 M
17152
WINDS W S/W 8 TO 13 MS
AFTER 311200UTC W 6 TO 11 MS
TEMP PLUS 1 TO PLUS 6 DEGREES
VIS 8 TO 10 KM
17153
WINDS S 10 TO 15 MS
AFTER 311200UTC E N/E 8 TO 13 MS
AFTER 311800UTC N/W 6 TO 11 MS
AFTER 010300UTC E 6 TO 11 MS
TEMP PLUS 1 TO PLUS 6 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
SEAS 1.5 TO 2.8 M AFTER 311200UTC 1.5 TO 2.7 M
AFTER 311800UTC 1.0 TO 2.0 M
17154
WINDS S 9 TO 14 MS
AFTER 311500UTC E 7 TO 12 MS
TEMP 0 TO PLUS 5 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
SEAS 1.7 TO 3.2 M AFTER 311500UTC 1.5 TO 2.9 M
17161
WINDS S/W 10 TO 15 MS
AFTER 311800UTC W S/W 8 TO 13 MS
TEMP 0 TO PLUS 5 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
17162
WINDS N/W 11 TO 16 MS
AFTER 311200UTC W S/W 8 TO 13 MS
TEMP 0 TO PLUS 5 DEGREES
VIS 8 TO 10 KM
SEAS 2.0 TO 3.7 M AFTER 311200UTC 1.7 TO 3.2 M
17163
WINDS W S/W 7 TO 12 MS
AFTER 311500UTC S/E 8 TO 13 MS
AFTER 010000UTC N 6 TO 11 MS
TEMP PLUS 1 TO PLUS 6 DEGREES
VIS 8 TO 10 KM
SEAS 1.6 TO 3.0 M AFTER 311500UTC 1.3 TO 2.3 M
AFTER 010000UTC 1.5 TO 2.7 M
17164
WINDS N N/W 11 TO 16 MS
AFTER 311200UTC W S/W 7 TO 12 MS
AFTER 010000UTC E 6 TO 11 MS
TEMP PLUS 1 TO PLUS 6 DEGREES
VIS 8 TO 10 KM
SEAS 1.2 TO 2.2 M AFTER 311200UTC 1.0 TO 1.9 M
AFTER 010000UTC 1.0 TO 1.8 M
17165
WINDS S S/W 5 TO 10 MS
AFTER 311200UTC E 8 TO 13 MS
AFTER 010000UTC N 5 TO 10 MS
TEMP PLUS 2 TO PLUS 7 DEGREES
VIS 8 TO 10 KM
SEAS 1.0 TO 2.0 M AFTER 311200UTC 1.6 TO 3.0 M
AFTER 010000UTC 1.3 TO 2.5 M
17170
WINDS N N/W 11 TO 16 MS
AFTER 311500UTC W N/W 6 TO 11 MS
TEMP MINUS 2 TO PLUS 3 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
SEAS 1.5 TO 2.9 M AFTER 311500UTC 1.1 TO 2.1 M
17181
WINDS W 17 TO 22 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 4 TO 6 KM RAIN
17183, 17184
WINDS W 17 TO 22 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 4 TO 6 KM RAIN
SEAS 1.5 TO 2.0 M
17191
WINDS W 17 TO 22 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 2 TO 4 KM HAZE
17193
WINDS W 17 TO 22 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 2 TO 4 KM HAZE
SEAS 1.0 TO 1.5 M
17194
WINDS S/W 11 TO 16 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 2 TO 4 KM HAZE
17200
WINDS S/W 11 TO 16 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 2 TO 4 KM HAZE
17210, 17220
WINDS S/W 11 TO 16 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 2 TO 4 KM HAZE
17230
WINDS N/W W 10 TO 15 MS
TEMP MINUS 3 TO PLUS 2 DEGREES
VIS 4 TO 9 KM LOCALLY WEAK PRECIPITATION
17241
WINDS W N/W
OF EAST 130E S/W 5 TO 10 MS GUSTS 12 TO 14 MS
TEMP 0 TO MINUS 3 DEGREES
VIS 4 TO 10 KM SOMETIMES TO 2 KM SOMETIMES SNOW
17243
WINDS W 10 TO 15 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 4 TO 6 KM LOCALLY 0.6 TO 0.8 KM
LOCALLY PRECIPITATION FOG
17244
WINDS W S/W 11 TO 16 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 4 TO 6 KM LOCALLY 0.6 TO 0.8 KM
LOCALLY PRECIPITATION FOG
17260
WINDS N/W 11 TO 16 MS
TEMP MINUS 2 TO PLUS 3 DEGREES
VIS 4 TO 6 KM HAZE
NNNN