SECURITY
WEATHER BULLETIN FOR METAREA XXI
ISSUED BY THE ARCTIC AND ANTARCTIC RESEARCH INSTITUTE
ST PETERSBURG ON THE 20 AUGUST 2026 AT 1800UTC
PART 1
AT 201800UTC
GALE WARNING
17161
FROM 201800UTC TO 211800UTC
WINDS W N/W GUSTS 17 TO 19 MS
17162
FROM 201800UTC TO 211800UTC
WINDS W N/W GUSTS 17 TO 20 MS
SEAS 2.3 TO 4.3 M
17170
FROM 201800UTC TO 211800UTC
WINDS W N/W GUSTS 17 TO 20 MS
17181, 17183, 17184, 17191
FROM 201800UTC TO 211800UTC
WINDS W 17 TO 22 MS
17193
FROM 201800UTC TO 211800UTC
WINDS N/W 17 TO 22 MS
17243
FROM 201800UTC TO 211200UTC
WINDS W N/W GUSTS 17 TO 20 MS
SEAS 2.3 TO 4.3 M
17244
FROM 201800UTC TO 211800UTC
WINDS W N/W GUSTS 18 TO 23 MS
SEAS 2.6 TO 4.8 M
PART 2
SYNOPSIS AT 201800UTC
HIGH 1022 HPA 71N 110E MOVING E 20 KMH
LOW 989 HPA 76N 162E MOVING E 20 KMH DEEPENING
LOW 1005 HPA 65N 174E MOVING E 10 KMH DEEPENING
HIGH 1020 HPA 71N 132W MOVING E 30 KMH INCREASE
ICE AT 201200UTC
17243-17244-17250
ICE N TO 7627N 12500E, 7632N 12616E, 7623N 12746E,
7628N 12947E, 7718N 13103E, 7752N 13328E, 7749N 13607E,
7754N 13826E, 7724N 13906E, 7729N 14000E, 7735N 14102E,
7721N 14301E, 7728N 14517E, 7722N 14800E, 7651N 14928E,
7652N 15242E, 7730N 15356E, 7801N 15411E, 7823N 15616E,
7727N 15850E, 7726N 16000E, 7725N 16120E, 7712N 16210E,
7703N 16614E, 7651N 16710E, 7702N 17006E, 7649N 17133E,
7701N 17222E, 7700N 17351E.
17250-17260
ICE E TO 7700N 17351E, 7639N 17435E, 7608N 17327E,
7556N 17408E, 7542N 17318E, 7530N 17325E, 7527N 17327E,
7527N 17152E, 7508N 17041E, 7450N 17007E, 7446N 16902E,
7411N 16956E, 7330N 16837E.
17260
ICE S TO 7330N 16837E, 7320N 16707E, 7316N 16518E,
7241N 16148E, 7315N 16040E, 7317N 15930E.
17260-17181-17183
ICE E TO 7317N 15930E, 7252N 15923E, 7239N 16016E,
7200N 16048E, 7123N 16116E, 7058N 16240E, 7035N 16242E,
7009N 16244E.
17183-17184-17193-17191-17194-17210
ICE N TO 7009N 16244E, 7009N 16400E, 7008N 16713E,
7032N 16800E, 7100N 16857E, 7123N 16947E, 7121N 17056E,
7100N 17155E, 7028N 17318E, 7024N 17406E, 7014N 17417E,
7011N 17511E, 7013N 17600E, 7013N 17603E, 6946N 17620E.
17244-17243
ICE S TO 7552N 14337E, 7637N 14137E, 7639N 14000E,
7639N 13845E, 7608N 13617E, 7536N 13448E, 7552N 13356E,
7558N 13223E.
17243-17152-17163-17161
ICE NE TO 7558N 13223E, 7519N 13152E, 7500N 13108E,
7456N 13059E, 7411N 13321E, 7359N 13500E, 7354N 13539E,
7345N 13617E, 7338N 13648E, 7345N 13753E, 7359N 14012E.
17161-17162-17164
ICE N TO 7406N 14104E, 7400N 14223E, 7403N 14424E,
7402N 14430E, 7357N 14548E, 7345N 14616E, 7330N 14649E,
7345N 14900E, 7348N 14925E.
17162
ICE W TO 7348N 14925E, 7412N 14924E, 7412N 14759E,
7439N 14659E, 7500N 14706E.
17162-17161
ICE S TO 7500N 14606E, 7458N 14430E, 7457N 14426E,
7458N 14338E.
17220
ICE W TO 6605N 16925W, 6608N 16926W, 6634N 17019W,
6659N 17006W, 6719N 17010W, 6720N 16932W, 6734N 16922W,
6735N 16900W.
17220
ICE S TO 6822N 16900W, 6836N 16943W, 6824N 17153W.
17220-17210-17200-17260
ICE W TO 6824N 17154W, 6842N 17235W, 6903N 17300W,
6908N 17342W, 6932N 17411W, 7001N 17520W, 7012N 17547W,
7030N 17525W, 7054N 17454W, 7123N 17503W, 7131N 17544W,
7200N 17617W, 7206N 17624W, 7219N 17524W, 7232N 17517W.
17260-17200
ICE N TO 7232N 17517W, 7227N 17433W, 7240N 17406W,
7233N 17339W, 7229N 17238W, 7200N 17212W, 7152N 17205W,
7146N 16900W.
17200-17220
ICE E TO 7120N 16900W, 7045N 17001W, 7033N 17204W,
7030N 17203W, 7018N 17200W, 7016N 17041W, 7000N 16946W,
7002N 16900W.
PART 3
FORECAST FROM 201800UTC TO 211800UTC
17120
WINDS W N/W 9 TO 14 MS
TEMP 0 TO PLUS 5 DEGREES
VIS 4 TO 9 KM IN FOG 0.3 TO 0.8 KM
LOCALLY WEAK PRECIPITATION FOG
SEAS 0.8 TO 1.4 MC
17130
WINDS W S/W 4 TO 9 MS
TEMP PLUS 10 TO PLUS 15 DEGREES
VIS 4 TO 9 KM IN FOG 0.4 TO 0.9 KM LOCALLY RAIN FOG
SEAS 0.2 TO 0.6 M
17140
WINDS W 8 TO 13 MS
TEMP PLUS 4 TO PLUS 9 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
SEAS 1.5 TO 2.7 M
17151
WINDS N/W 11 TO 16 MS AFTER 210300UTC W N/W 9 TO 14 MS
TEMP PLUS 3 TO PLUS 8 DEGREES
VIS 8 TO 10 KM
SEAS 2.0 TO 3.8 M AFTER 210300UTC 1.9 TO 3.5 M
17152
WINDS W N/W 11 TO 16 MS
TEMP PLUS 2 TO PLUS 7 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
SEAS 2.0 TO 3.6 M
17153
WINDS N/W 8 TO 13 MS AFTER 210000UTC W 5 TO 10 MS
AFTER 211200UTC W 9 TO 14 MS
TEMP PLUS 4 TO PLUS 9 DEGREES
VIS 8 TO 10 KM
SEAS 1.3 TO 2.4 M AFTER 210000UTC 1.0 TO 1.8 MC
AFTER 211200UTC 1.3 TO 2.5 M
17154
WINDS N/W 9 TO 14 MS AFTER 210300UTC W N/W 6 TO 11 MS
AFTER 211500UTC W N/W 9 TO 14 MS
TEMP PLUS 3 TO PLUS 8 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
SEAS 1.8 TO 3.3 M AFTER 210300UTC 1.5 TO 2.7 M
AFTER 211500UTC 1.8 TO 3.3 M
17161
WINDS W N/W 9 TO 14 MS GUSTS 17 TO 19 MS
TEMP 0 TO PLUS 5 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
17162C
WINDS W N/W 9 TO 14 MS GUSTS 17 TO 20 MS
TEMP 0 TO PLUS 5 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
LOCALLY 0.6 TO 0.8 KM FOG
SEAS 2.3 TO 4.3 M
17163
WINDS W N/W 11 TO 16 MS
TEMP PLUS 2 TO PLUS 7 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
SEAS 2.0 TO 3.7 M
17164C
WINDS W N/W 11 TO 16 MS
TEMP PLUS 3 TO PLUS 8 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
LOCALLY 0.6 TO 0.8 KM FOG
SEAS 1.2 TO 2.2 M
17165
WINDS N/W 9 TO 14 MS
TEMP PLUS 4 TO PLUS 9 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
SEAS 1.8 TO 3.4 M
17170
WINDS W N/W 8 TO 13 MS GUSTS 17 TO 20 MS
TEMP MINUS 6 TO PLUS 11 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
LOCALLY 0.6 TO 0.8 KM FOG
SEAS 1.9 TO 3.5 MC
17181, 17191
WINDS W 17 TO 22 MS
TEMP 0 TO PLUS 5 DEGREES
VIS 4 TO 6 KM RAIN
17183, 17184
WINDS W 17 TO 22 MSC
TEMP 0 TO PLUS 5 DEGREES
VIS 4 TO 6 KM RAIN
SEAS 1.0 TO 1.5 M
17193
WINDS N/W 17 TO 22 MS
TEMP 0 TO PLUS 5 DEGREES
VIS 4 TO 6 KM RAIN
SEAS 1.0 TO 1.5 M
17194
WINDS W 11 TO 16 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 4 TO 6 KM RAIN
17200C
WINDS W 11 TO 16 MS
TEMP MINUS 2 TO PLUS 3 DEGREES
VIS 4 TO 6 KM RAIN
17210
WINDS N/W 11 TO 16 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 4 TO 6 KM RAIN
17220
WINDS S 11 TO 16 MS
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 4 TO 6 KM RAIN
17230
WINDS N/W W 11 TO 16 MS
TEMP MINUS 2 TO PLUS 3 DEGREES
VIS 4 TO 9 KM LOCALLY 0.5 TO 1.0 KM CC
LOCALLY WEAK PRECIPITATION
17241CC
WINDS N/W W 7 TO 12 MS GUSTS TO 15 MS
TEMP 0 TO MINUS 3 DEGREES
VIS 4 TO 10 KM IN FOG LESS 1 KM LOCALLY SNOW HAZE FOG
17243
WINDS W N/W 8 TO 13 MS GUSTS 17 TO 20 MS
AFTER 211200UTC N/W 11 TO 16 MS C
TEMP MINUS 1 TO PLUS 4 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
LOCALLY 0.6 TO 0.8 KM FOG
SEAS 2.3 TO 4.3 M AFTER 211200UTC 2.0 TO 3.7 M
17244
WINDS W N/W 9 TO 14 MS GUSTS 18 TO 23 MS
TEMP 0 TO PLUS 5 DEGREES
VIS 4 TO 6 KM LOCALLY PRECIPITATION
LOCALLY 0.6 TO 0.8 KM FOG
SEAS 2.6 TO 4.8 M
17260
WINDS S/W 11 TO 16 MS
TEMP MINUS 2 TO PLUS 3 DEGREES
VIS 4 TO 6 KM HAZE
NNNN