Sioux City, Iowa, Sun 26 Jul 2015:According to airnav.com, the ATCT at Sioux City (KSUX) is open on Sundays:
However, this site had ASOS in AUTO mode all day yesterday:
METAR KSUX 260552Z
AUTO 00000KT 10SM BKN060 BKN120 23/21 A2990 RMK AO2 LTG DSNT N AND NW RAB21E36 SLP115 P0001 60001 T02330206 10289 20228 403060228 51010
SPECI KSUX 260616Z
AUTO 34009KT 10SM TS OVC065 23/21 A2991 RMK AO2 LTG DSNT W-NE TSB16 T02330211
SPECI KSUX 260629Z
AUTO 36029G38KT 1 1/2SM R31/1800VP6000FT +TSRA FEW010 SCT015 OVC065 22/19 A2995 RMK AO2 PK WND 36038/0627 LTG DSNT ALQDS RAB18 TSB16 PRESRR P0002 T02170189
SPECI KSUX 260631Z
AUTO 36029G38KT 1SM R31/1800VP6000FT +TSRA BR FEW010 BKN015 OVC065 21/19 A2996 RMK AO2 PK WND 36038/0627 WSHFT 0617 LTG DSNT ALQDS RAB18 TSB16 P0004 T02110189
SPECI KSUX 260634Z
AUTO 01026G38KT 3/4SM R31/1800VP6000FT +TSRA BR BKN012 OVC060 20/18 A2996 RMK AO2 PK WND 36038/0627 WSHFT 0617 LTG DSNT ALQDS RAB18 TSB16 PRESRR P0017 T02000183
SPECI KSUX 260639Z
AUTO 02017G33KT 1SM R31/2200VP6000FT +TSRA BR FEW011 BKN016 OVC060 20/18 A2994 RMK AO2 PK WND 36038/0627 WSHFT 0617 LTG DSNT ALQDS RAB18 TSB16 P0048 T02000183
METAR KSUX 260652Z
AUTO 01011G20KT 2 1/2SM R31/5500VP6000FT +TSRA BR FEW013 OVC024 20/18 A2998 RMK AO2 PK WND 36038/0627 WSHFT 0617 LTG DSNT ALQDS RAB18 TSB16 SLP145 P0078 T02000183
SPECI KSUX 260705Z
AUTO 09013KT 3SM R31/5000VP6000FT +TSRA BR OVC033 20/18 A2992 RMK AO2 WSHFT 0651 LTG DSNT ALQDS PRESFR P0020 T02000183
SPECI KSUX 260711Z
AUTO 08012G19KT 5SM -RA BR BKN035 OVC100 20/18 A2992 RMK AO2 WSHFT 0651 LTG DSNT ALQDS TSE06 P0025 T02000178
SPECI KSUX 260725Z
AUTO 09013KT 10SM VCTS -RA FEW038 SCT100 BKN110 20/18 A2990 RMK AO2 WSHFT 0651 LTG DSNT E-S TSE06 P0026 T02000178
METAR KSUX 260752Z
AUTO 07007KT 10SM FEW070 FEW085 SCT120 20/18 A2988 RMK AO2 WSHFT 0651 LTG DSNT SE AND S RAE52 TSE06 SLP112 P0027 T02000178
METAR KSUX 260852Z
AUTO 16006KT 10SM OVC070 20/18 A2986 RMK AO2 SLP105 60105 T02000183 58011
METAR KSUX 260952Z
AUTO 15003KT 10SM OVC070 20/18 A2985 RMK AO2 SLP100 T02000183
METAR KSUX 261052Z
AUTO 00000KT 10SM BKN065 20/18 A2986 RMK AO2 SLP105 T02000183
METAR KSUX 261152Z
AUTO 18004KT 10SM FEW055 SCT065 21/18 A2987 RMK AO2 SLP106 60105 70106 T02060183 10233 20200 53002
METAR KSUX 261252Z
AUTO 21003KT 10SM BKN047 BKN055 22/19 A2988 RMK AO2 SLP108 T02170189
METAR KSUX 261352Z
AUTO 00000KT 10SM OVC041 23/19 A2989 RMK AO2 SLP113 T02280189
METAR KSUX 261452Z
AUTO 21004KT 10SM OVC048 24/21 A2989 RMK AO2 SLP114 T02440206 52008
METAR KSUX 261552Z
AUTO VRB04KT 10SM FEW047 26/21 A2990 RMK AO2 SLP115 T02610211
METAR KSUX 261652Z
AUTO 26003KT 10SM CLR 28/22 A2990 RMK AO2 SLP116 T02780222
SPECI KSUX 261711Z
AUTO 00000KT 10SM BKN020 29/23 A2990 RMK AO2 T02890228
SPECI KSUX 261741Z
AUTO 00000KT 10SM SCT021 28/22 A2990 RMK AO2 T02780217
SPECI KSUX 261750Z
AUTO 27004KT 10SM BKN021 28/22 A2990 RMK AO2
METAR KSUX 261752Z
AUTO 27004KT 10SM BKN022 28/22 A2990 RMK AO2 SLP117 T02780217 10289 20206 51002
SPECI KSUX 261819Z
AUTO VRB04KT 10SM FEW022 BKN031 29/22 A2990 RMK AO2 T02890222
SPECI KSUX 261827Z
AUTO 34006KT 10SM BKN029 OVC033 29/22 A2990 RMK AO2 T02890222
SPECI KSUX 261843Z
AUTO 01005KT 10SM SCT029 BKN035 30/22 A2989 RMK AO2 T03000222
METAR KSUX 261852Z
AUTO 34003KT 10SM SCT027 BKN037 29/22 A2989 RMK AO2 SLP114 T02940217
SPECI KSUX 261915Z
AUTO 03004KT 10SM BKN025 BKN039 29/22 A2989 RMK AO2 T02890217
METAR KSUX 261952Z
AUTO 00000KT 10SM SCT027 SCT036 29/23 A2988 RMK AO2 SLP110 T02940228
SPECI KSUX 262032Z
AUTO 08004KT 10SM BKN028 BKN033 29/23 A2988 RMK AO2 T02940228
METAR KSUX 262052Z
AUTO 05006KT 10SM BKN025 BKN032 BKN042 29/23 A2988 RMK AO2 SLP109 T02940228 56007
SPECI KSUX 262118Z
AUTO 07006KT 10SM SCT025 30/23 A2988 RMK AO2 T03000228
METAR KSUX 262152Z
AUTO 12005KT 10SM FEW029 SCT036 30/23 A2988 RMK AO2 SLP108 T03000228
METAR KSUX 262252Z
AUTO 09005KT 10SM CLR 31/23 A2987 RMK AO2 SLP107 T03060233
METAR KSUX 262352Z
AUTO 10005KT 10SM CLR 30/23 A2986 RMK AO2 SLP103 T03000228 10306 20278 58006
METAR KSUX 270052Z
AUTO 08006KT 10SM CLR 29/23 A2986 RMK AO2 SLP104 T02890233
METAR KSUX 270152Z
AUTO 08005KT 10SM CLR 27/23 A2986 RMK AO2 SLP103 T02720228
METAR KSUX 270252Z
AUTO 09005KT 10SM CLR 27/23 A2988 RMK AO2 SLP110 T02670228 53007
METAR KSUX 270352Z
AUTO 10005KT 10SM FEW029 BKN038 27/23 A2990 RMK AO2 SLP115 T02670228
METAR KSUX 270452Z
AUTO 10007KT 10SM CLR 26/23 A2987 RMK AO2 SLP106 T02560228
On Sun 19 Jul, Sun 12 Jul, and Sun 5 Jul; KSUX was
not in AUTO mode. The difference? There were no thunderstorms on those dates.
Late edit: this site is still in AUTO mode:
SPECI KSUX 271433Z
AUTO 09009KT 10SM R31/
0200VP6000FT VCTS
SCT060 26/21 A2989 RMK AO2 LTG DSNT NW-E T02560211
What could have caused the RVR to drop to 200 feet? It's not as if there is no flying at this airport:
Beverly, Massachusetts, Sun 26 Jul 2015:METAR KBVY 261953Z 16007KT 10SM SCT027 BKN033 BKN065 24/19
A2997 RMK AO2 SLP143 T02440194
SPECI KBVY 262049Z
AUTO 14006KT 10SM
TS FEW034 BKN042 BKN050
24/19 A2997 RMK AO2 TSB49
METAR KBVY 262053Z
AUTO 15007KT 10SM
-TSRA SCT034 BKN042
BKN050 23/19 A2997 RMK AO2 RAB51 TSB49 SLP142
P0000 60000 T02330194 56007
SPECI KBVY 262106Z
AUTO 23008KT 2SM
+TSRA SCT017 BKN027 OVC038
23/19 A2997 RMK AO2 LTG DSNT W P0005 T02280194
SPECI KBVY 262108Z
AUTO 22010KT 180V250 1 1/2SM
+TSRA SCT017
BKN032 OVC041 22/19 A2997 RMK AO2 LTG DSNT W P0007
T02220194
SPECI KBVY 262121Z 15010KT 1 3/4SM +RA FEW017 BKN047 OVC060
22/19 A2997 RMK AO2 VIS 1V4 TSE20 P0020 T02220194
ATC logged off ASOS during the TS, then logged back on after the TS ended.
Poughkeepsie, New York, Sun 26 Jul 2015:METAR KPOU 261953Z 18006KT 10SM FEW045 28/19 A2993 RMK AO2
LTG DSNT N AND S AND NW SLP131 T02830194
METAR KPOU 262053Z
AUTO 13006KT 10SM FEW049 FEW110 27/21
A2992 RMK AO2 LTG DSNT W-N SLP126 T02720206 56010
METAR KPOU 262153Z
AUTO 16004KT 10SM FEW110 27/21 A2991 RMK
AO2 LTG DSNT NE AND W SLP125 T02720206
SPECI KPOU 262250Z
AUTO VRB04KT 2 1/2SM
VCTS RA BKN046 BKN060
OVC075 24/21 A2993 RMK AO2 LTG DSNT NE AND SW
AND W RAB31 P0010
METAR KPOU 262251Z
AUTO VRB06KT 2 1/2SM
VCTS RA SCT041 BKN049
OVC065 24/21 A2993 RMK AO2 LTG DSNT NE AND SW
AND W RAB31 SLP130 P0010 T02440211
SPECI KPOU 262256Z 13009KT 5SM TSRA BKN044 BKN060 OVC100
24/21 A2993 RMK AO2 LTG DSNT NE AND W TSB55 P0002
T02390206
ASOS was put into AUTO mode, as thunderstorms approached.