NBM Guidance for TIDEWATER (TWRO3)
46.0115N 123.5562W
Elevation 1985 ft
HOURLY TO 24 HOURS:
TWRO3 NBM V5.0 NBH GUIDANCE 8/28/2026 1600 UTC
UTC 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 Time (UTC)
PDT 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 Time (PDT)
TMP 53 55 58 59 59 59 58 56 54 52 51 50 50 50 50 51 51 52 52 52 51 50 50 50 52 Temperature(F)
TSD 1 2 2 2 2 2 2 1 1 2 1 2 2 2 2 2 2 2 1 1 1 1 1 1 1 SD of temp(F)
DPT 53 54 54 54 54 54 53 52 52 52 51 50 50 50 50 50 50 50 50 50 50 50 50 50 52 Dew point temp(F)
DSD 1 1 2 2 2 2 2 2 2 2 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 Dew point temp SD(F)
WBG 53 55 58 60 60 60 57 56 54 52 50 49 49 50 50 50 50 50 51 51 50 50 50 50 52 Wet bulb temp(F)
SKY 76 73 66 49 39 27 21 12 15 29 50 59 75 73 72 78 78 81 74 81 69 76 57 62 73 Sky cover(%)
SSD 27 22 20 15 16 13 11 8 11 22 18 14 14 27 25 16 17 8 16 14 30 14 19 22 17 Sky cover SD(%)
WDR 31 31 30 31 30 30 30 30 30 30 30 30 30 29 29 28 27 27 27 28 28 27 28 28 28 Wind dir (deg)
WSP 3 3 4 4 4 5 6 7 7 7 6 6 6 5 6 6 5 5 5 6 5 4 4 4 4 Wind spd (kts)
WSD 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 Wind spd SD(kts)
GST 8 8 8 9 9 11 13 15 16 15 13 13 12 11 11 10 10 10 10 11 10 10 10 10 11 Wind gust(kts)
GSD 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 2 3 3 2 2 3 2 2 Wind gust SD(kts)
P01 0 0 0 0 0 0 0 0 0 0 0 1 2 2 2 2 3 20 13 19 14 12 6 9 5 1-hr PoP(%)
P06 9 4 20 6-hr PoP(%)
Q01 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 2 1 0 0 0 0 1-hr QPF (.01")
T01 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 1 1 1 1 1 1 1-hr tstm prob(%)
PZR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Cond prob ZR(%)
PSN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Cond prob Snow(%)
PPL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Cond prob Sleet/IP(%)
PRA 9 0 6 0 0 0 0 0 0 0 0 12 12 12 22 27 18 34 46 51 28 28 13 17 13 Cond prob of rain(%)
S01 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1-hr snow(1/10in)
SLV 81 81 80 80 78 76 73 71 68 66 65 67 71 72 75 72 69 68 69 66 64 62 59 61 61 Snow level 100s feet MSL
I01 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1-hr ice(1/100in)
CIG 22 35 35-88-88-88-88-88-88-88-88 15 13 15 11 13 15 15 18 18 18 18 18 22 22 Ceiling height*
MVC 56 30 26 11 5 5 7 8 9 11 22 50 57 65 70 70 64 62 61 62 61 61 60 58 58 Prob cig<=3000ft(%) MVFR
IFC 18 7 4 2 1 1 1 1 2 4 8 17 25 29 39 39 36 35 33 34 29 24 21 15 10 Prob cig<1000ft(%) IFR
LIC 13 4 1 1 0 0 0 0 0 0 2 4 6 8 12 12 12 12 12 14 12 9 6 4 2 Prob cig<500ft(%) LIFR
LCB 5 9 13 17 23 16 19 19 11 7 17 15 10 10 5 4 6 8 6 9 6 8 7 9 10 Lowest cloud base*
VIS 100100100100100100100100100100100100100100100100100100100100100100 90100100 Visibility*
MVV 12 5 1 1 1 0 0 0 0 1 2 3 4 6 7 7 8 8 10 12 12 12 13 10 7 Prob vsby<=5mi(%) MVFR
IFV 9 3 1 0 0 0 0 0 0 1 2 2 3 4 4 4 4 5 6 7 7 7 8 5 3 Prob vsby<3mi(%) IFR
LIV 7 2 1 0 0 0 0 0 0 1 1 1 2 3 3 3 2 3 4 5 4 4 4 3 2 Prob vsby<1mi(%) LIFR
MHT 24 29 31 35 33 32 29 26 23 20 14 11 10 6 5 5 5 5 6 6 6 7 11 20 23 MixHgt 100s feet AGL
TWD 32 32 31 31 30 30 29 29 29 29 30 29 29 28 28 27 27 27 28 27 28 27 28 28 28 Transport wind dir
TWS 6 6 6 7 7 8 9 10 10 10 10 9 8 7 7 7 8 8 7 7 7 7 7 10 10 Transport wind spd(kts)
SOL 21 32 47 58 61 65 58 47 29 12 4 3 2 2 0 0 0 0 0 0 0 1 5 14 17 Solar rad (10s W/m2)
3-HOURLY TO 60 HOURS:
TWRO3 NBM V5.0 NBS GUIDANCE 8/28/2026 1600 UTC
DT /AUG 29 /AUG 30 /AUG 31
UTC 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 Time (UTC)
PDT 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 Time (PDT)
FHR 05 08 11 14 17 20 23 26 29 32 35 38 41 44 47 50 53 56 59 62 65 68 71 Forecast Hour
TXN 50 57 48 61 48 Max/Min Temp(F)
XND 2 2 2 2 3 SD of max/min temps(F)
TMP 59 56 51 50 51 52 50 52 56 54 51 49 50 50 49 53 59 58 52 49 49 48 49 Temperature(F)
TSD 2 1 1 2 2 1 1 2 2 2 1 2 2 2 1 2 2 2 1 3 3 3 2 SD of temp(F)
DPT 54 52 51 50 50 50 50 52 53 52 51 49 49 49 49 52 52 53 52 49 48 47 49 Dew point temp(F)
DSD 2 2 1 1 1 1 1 2 3 2 1 1 2 2 1 2 2 2 2 2 3 3 2 Dew point temp SD(F)
WBG 60 56 50 50 50 51 50 53 57 54 50 49 49 49 49 54 59 57 51 49 48 48 48 Wet bulb temp(F)
SKY 39 12 50 73 78 81 57 79 55 50 54 68 89 88 89 68 53 30 29 31 24 42 37 Sky cover(%)
SSD 16 8 18 27 17 14 19 16 32 34 23 29 8 11 13 16 17 14 19 23 21 24 25 Sky cover SD(%)
WDR 30 30 30 29 27 28 28 28 29 29 29 29 28 28 25 30 31 32 32 32 33 36 2 Wind dir (deg)
WSP 4 7 6 5 5 6 4 5 7 8 5 5 3 3 2 2 3 4 3 3 2 2 2 Wind spd (kts)
WSD 1 1 1 1 1 2 1 1 1 2 1 1 1 1 1 1 1 1 2 1 1 1 1 Wind spd SD(kts)
GST 9 15 13 11 10 11 10 12 16 18 12 10 7 6 5 6 8 10 7 7 5 5 4 Wind gust(kts)
GSD 2 3 3 3 3 3 3 2 3 4 3 3 2 2 2 2 2 3 3 3 2 2 1 Wind gust SD(kts)
P06 9 4 20 49 19 6 8 1 0 0 0 6-hr PoP(%)
P12 21 56 12 1 0 12-hr PoP(%)
Q06 0 0 0 9 1 0 0 0 0 0 0 6-hr QPF(.01in)
Q12 0 10 0 0 0 12-hr QPF(.01in)
DUR 3 4 0 0 0 Duration of precip(hrs)
T03 0 0 0 0 1 4 2 2 2 0 0 1 0 1 0 1 0 0 0 0 0 0 0 3-hr Tstm prob(%)
T06 0 1 8 6 6 3 2 2 0 0 0 6-hr Tstm prob(%)
T12 8 7 3 2 0 12-hr Tstm prob(%)
PZR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Cond prob ZR(%)
PSN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Cond prob Snow(%)
PPL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Cond prob Sleet/IP(%)
PRA 0 0 0 12 18 51 13 33 29 16 15 0 15 15 0 0 0 0 0 0 0 0 1 Cond prob of rain(%)
S06 0 0 0 0 0 0 0 0 0 0 0 6-hr snow(1/10in)
SLV 78 71 65 72 69 66 59 65 64 65 65 67 66 66 77 95 98100100100100100100 Snow level 100s feet MSL
I06 0 0 0 0 0 0 0 0 0 0 0 6-hr ice(1/100in)
CIG -88-88-88 15 15 18 18 22 45 45 35 60 47 49 42 60-88-88-88-88-88-88-88 Ceiling height*
IFC 1 1 8 29 36 34 21 6 3 3 4 3 3 4 13 2 0 0 2 4 8 16 17 Prob cig<1000ft(%) IFR
LCB 23 19 17 10 6 9 7 15 17 21 7 2 2 3 4 10 13 22 50 43100 70 60 Lowest cloud base*
VIS 100100100100100100 90100100100100100100100100100100100100100100100100 Visibility*
IFV 0 0 2 4 4 7 8 2 0 0 0 2 6 4 5 2 0 0 0 2 4 10 8 Prob vsby<3mi(%) IFR
MHT 33 26 14 6 5 6 11 26 34 32 11 5 6 5 11 27 34 26 8 4 4 3 3 MixHgt 100s feet AGL
TWD 30 29 30 28 27 27 28 27 28 28 28 29 29 29 29 31 31 32 31 33 1 1 1 Transport wind dir
TWS 7 10 10 7 8 7 7 10 12 11 8 7 6 4 4 5 5 7 6 5 4 4 3 Transport wind spd(kts)
SOL 61 47 4 2 0 0 5 21 55 41 5 3 0 0 3 18 52 55 20 10 0 0 3 Solar rad (10s W/m2)
DAILY TO 7 DAYS:
TWRO3 NBM V5.0 NBE GUIDANCE 8/28/2026 1600 UTC
SAT 29 |SUN 30 |MON 31 |TUE 01 |WED 02 |THU 03 |FRI 04 |SAT 05 CLIMO
UTC 12| 00 12| 00 12| 00 12| 00 12| 00 12| 00 12| 00 12 Time (UTC)
PDT 05 17 05 17 05 17 05 17 05 17 05 17 05 17 05 Time (PDT)
FHR 20| 32 44| 56 68| 80 92|104 116|128 140|152 164|176 188 Forecast Hour
TXN 50| 57 48| 61 48| 67 51| 62 50| 55 49| 57 48| 61 48 51 70 Max/Min Temp(F)
XND 2| 2 2| 2 3| 4 3| 4 2| 3 3| 5 3| 5 4 SD of max/min temps(F)
TMP 52| 54 50| 58 48| 62 52| 57 53| 54 50| 54 49| 58 49 Temperature(F)
TSD 1| 2 2| 2 3| 4 2| 3 2| 3 3| 4 3| 6 3 SD of temp(F)
DPT 50| 52 49| 53 47| 56 51| 55 51| 54 49| 54 48| 55 48 Dew point temp(F)
DSD 1| 2 2| 2 3| 2 2| 2 2| 3 3| 3 3| 3 3 Dew point temp SD(F)
WBG 51| 54 49| 57 48| 60 51| 57 52| 54 49| 55 49| 57 49 Wet bulb temp(F)
SKY 81| 50 88| 30 42| 34 66| 54 83| 84 71| 55 59| 36 38 Sky cover(%)
SSD 14| 34 11| 14 24| 32 16| 16 10| 13 13| 28 9| 17 27 Sky cover SD(%)
WDR 28| 29 28| 32 36| 30 23| 26 18| 21 18| 28 21| 29 18 Wind dir (deg)
WSP 6| 8 3| 4 2| 6 3| 7 14| 6 8| 4 3| 4 3 Wind spd (kts)
WSD 2| 2 1| 1 1| 2 2| 2 4| 4 4| 3 3| 3 2 Wind spd SD(kts)
GST 11| 18 6| 10 5| 13 6| 18 26| 24 15| 14 7| 10 6 Wind gust(kts)
GSD 3| 4 2| 3 2| 3 3| 5 8| 9 8| 8 6| 5 3 Wind gust SD(kts)
P12 21| 56 12| 1 0| 1 4| 24 39| 87 75| 69 29| 30 10 -99-99 12-hr PoP(%)
Q12 0| 10 0| 0 0| 0 0| 2 10| 68 24| 31 5| 8 0 12-hr QPF(.01in)
Q24 | 10| 0| 0| 12| 92| 36| 8 93 24-hr QPF(.01in)
DUR 3| 4 0| 0 0| 0 0| 1 3| 8 4| 5 1| 3 0 Duration of precip(hrs)
T12 8| 7 3| 2 0| 0 2| 3 5| 11 11| 14 7| 8 5 12-hr Tstm prob(%)
PZR 0| 0 0| 0 0| 0 0| 0 0| 0 0| 0 0| 0 0 Cond prob ZR(%)
PSN 0| 0 0| 0 0| 0 0| 0 0| 0 0| 0 0| 0 0 Cond prob Snow(%)
PPL 0| 0 0| 0 0| 0 0| 0 0| 0 0| 0 0| 0 0 Cond prob Sleet/IP(%)
PRA 51| 16 15| 0 0| 2 13| 19 65| 93 57| 65 22| 26 8 Cond prob of rain(%)
S12 0| 0 0| 0 0| 0 0| 0 0| 0 0| 0 0| 0 0 12-hr snow(1/10in)
S24 | 0| 0| 0| 0| 0| 0| 0 24-hr snow(1/10in)
SLV 66| 65 66|100 103| 97 90| 82 81| 75 66| 68 68| 74 76 Snow level 100s feet MSL
I12 0| 0 0| 0 0| 0 0| 0 0| 0 0| 0 0| 0 0 12-hr ice(1/100in)
SOL 4| 30 2| 32 7| 38 6| 43 5| 8 4| 37 7| 37 4 Solar rad (10s W/m2)
DAY 8, 9 AND 10:
TWRO3 NBM V5.0 NBX GUIDANCE 8/28/2026 1600 UTC
SUN 06| MON 07| TUE 08
UTC 00 12 |00 12 |00 12 Time (UTC)
PDT 17 05 |17 05 |17 05 Time (PDT)
FHR 200 212|224 236|248 260 Forecast Hour
TXN 66 51| 69 54| 70 54 Max/Min Temp(F)
XND 7 5| 9 5| 9 6 SD of max/min temps(F)
TMP 63 51| 66 54| 66 54 Temperature(F)
TSD 8 4| 9 5| 9 5 SD of temp(F)
DPT 55 48| 56 50| 57 50 Dew point temp(F)
DSD 4 4| 4 4| 4 4 Dew point temp SD(F)
WBG 60 50| 63 52| 63 52 Wet bulb temp(F)
SKY 37 35| 31 41| 33 55 Sky cover(%)
SSD 31 29| 29 17| 14 23 Sky cover SD(%)
WDR 32 9| 32 6| 30 9 Wind dir (deg)
WSP 4 3| 3 3| 4 3 Wind spd (kts)
WSD 2 3| 2 3| 2 3 Wind spd SD(kts)
GST 9 7| 10 7| 9 7 Wind gust(kts)
GSD 4 5| 4 5| 5 4 Wind gust SD(kts)
P12 21 13| 12 8| 11 10 12-hr PoP(%)
Q12 4 0| 0 0| 0 0 12-hr QPF(.01in)
Q24 4| 0| 0 24-hr QPF(.01in)
DUR 1 0| 0 0| 0 0 Duration of precip(hrs)
PZR 0 0| 0 0| 0 0 Cond prob ZR(%)
PSN 0 0| 0 0| 0 0 Cond prob Snow(%)
PPL 0 0| 0 0| 0 0 Cond prob Sleet/IP(%)
PRA 20 10| 12 5| 10 10 Cond prob of rain(%)
S12 0 0| 0 0| 0 0 12-hr snow(1/10in)
S24 0| 0| 0 24-hr snow(1/10in)
SLV 84 82| 86 87| 91 90 Snow level 100s feet MSL
I12 0 0| 0 0| 0 0 12-hr ice(1/100in)
SOL 9 7| 13 7| 20 16 Solar rad (10s W/m2)
STANDARD DEVIATION AND THRESHOLD PROBABILITIES:
TWRO3 NBM V5.0 NBP GUIDANCE 8/28/2026 1300 UTC
SAT 29| SUN 30| MON 31| TUE 01| WED 02| THU 03| FRI 04| SAT 05| SUN 06|
UTC 12| 00 12| 00 12| 00 12| 00 12| 00 12| 00 12| 00 12| 00 12| 00 Time (UTC)
PDT 05| 17 05| 17 05| 17 05| 17 05| 17 05| 17 05| 17 05| 17 05| 17 Time (PDT)
FHR 23| 35 47| 59 71| 83 95|107 119|131 143|155 167|179 191|203 215|227 Forecast Hour
TXNMN 50| 57 48| 61 48| 67 51| 62 52| 55 50| 57 48| 61 48| 66 51| 66 Mean min/max temp(F)
TXNSD 2| 2 2| 2 3| 4 3| 4 2| 3 3| 4 3| 5 4| 7 5| 7 SD min/max temp(F)
TXNP1 48| 55 46| 58 45| 63 48| 56 49| 51 45| 53 45| 54 45| 56 45| 56 10th percentile min/max temp(F)
TXNP2 49| 56 47| 59 46| 64 49| 59 51| 54 47| 54 46| 56 46| 60 48| 60 25th percentile min/max temp(F)
TXNP5 50| 57 48| 61 47| 67 52| 61 52| 55 49| 56 48| 60 48| 65 50| 65 50th percentile min/max temp(F)
TXNP7 51| 59 50| 62 49| 70 53| 64 54| 56 52| 60 50| 64 51| 70 53| 70 75th percentile min/max temp(F)
TXNP9 52| 60 51| 64 53| 72 55| 66 54| 59 53| 64 53| 68 53| 77 59| 77 90th percentile min/max temp(F)
WSPP1 4| 5 2| 3 1| 4 2| 4 5| 1 3| 1 1| 2 1| 2 2| 2 10th percentile wnd(kts)
WSPP2 4| 6 2| 4 2| 5 2| 6 8| 3 4| 3 2| 3 2| 3 2| 3 25th percentile wnd(kts)
WSPP5 6| 7 3| 5 2| 6 3| 7 11| 6 6| 4 4| 4 3| 4 4| 4 50th percentile wnd(kts)
WSPP7 6| 9 4| 6 3| 6 4| 8 13| 9 10| 7 6| 6 5| 5 6| 5 75th percentile wnd(kts)
WSPP9 8| 10 5| 7 4| 7 5| 10 14| 12 12| 8 9| 8 7| 6 8| 6 90th percentile wnd(kts)
W24P1 | 8 | 8 | 6 | 6 | 7 | 6 | 5 | 5 | 5 10th percentile 24hr sustained wnd exceedance(kts)
W24P2 | 9 | 9 | 7 | 7 | 9 | 8 | 7 | 6 | 6 25th percentile 24hr sustained wnd exceedance(kts)
W24P5 | 10 | 10 | 7 | 9 | 10 | 11 | 9 | 7 | 7 50th percentile 24hr sustained wnd exceedance(kts)
W24P7 | 10 | 12 | 9 | 9 | 11 | 14 | 11 | 10 | 8 75th percentile 24hr sustained wnd exceedance(kts)
W24P9 | 11 | 12 | 9 | 10 | 13 | 16 | 13 | 11 | 10 90th percentile 24hr sustained wnd exceedance(kts)
G24P1 | 17 | 17 | 13 | 13 | 16 | 18 | 12 | 11 | 11 10th percentile 24hr wnd gust exceedance(kts)
G24P2 | 18 | 20 | 14 | 15 | 19 | 23 | 14 | 14 | 13 25th percentile 24hr wnd gust exceedance(kts)
G24P5 | 20 | 22 | 16 | 17 | 21 | 30 | 19 | 16 | 15 50th percentile 24hr wnd gust exceedance(kts)
G24P7 | 21 | 24 | 18 | 19 | 25 | 35 | 26 | 21 | 18 75th percentile 24hr wnd gust exceedance(kts)
G24P9 | 23 | 25 | 20 | 21 | 31 | 38 | 34 | 26 | 21 90th percentile 24hr wnd gust exceedance(kts)
Q24P1 | 0| 0| 0| 0| 13| 0| 0| 0| 10th percentile 24hr QPF(1/100in)
Q24P2 | 0| 0| 0| 0| 75| 0| 0| 0| 25th percentile 24hr QPF(1/100in)
Q24P5 | 2| 0| 0| 0| 120| 26| 0| 0| 50th percentile 24hr QPF(1/100in)
Q24P7 | 10| 0| 0| 20| 147| 58| 13| 5| 75th percentile 24hr QPF(1/100in)
Q24P9 | 55| 0| 0| 46| 163| 87| 40| 27| 90th percentile 24hr QPF(1/100in)
S24P1 | 0| 0| 0| 0| 0| 0| 0| 0| 10th percentile 24hr snow accum(1/10in)
S24P2 | 0| 0| 0| 0| 0| 0| 0| 0| 25th percentile 24hr snow accum(1/10in)
S24P5 | 0| 0| 0| 0| 0| 0| 0| 0| 50th percentile 24hr snow accum(1/10in)
S24P7 | 0| 0| 0| 0| 0| 0| 0| 0| 75th percentile 24hr snow accum(1/10in)
S24P9 | 0| 0| 0| 0| 0| 0| 0| 0| 90th percentile 24hr snow accum(1/10in)
I24P1 | 0| 0| 0| 0| 0| 0| 0| 0| 10th percentile 24hr ice accum(1/100in)
I24P2 | 0| 0| 0| 0| 0| 0| 0| 0| 25th percentile 24hr ice accum(1/100in)
I24P5 | 0| 0| 0| 0| 0| 0| 0| 0| 50th percentile 24hr ice accum(1/100in)
I24P7 | 0| 0| 0| 0| 0| 0| 0| 0| 75th percentile 24hr ice accum(1/100in)
I24P9 | 0| 0| 0| 0| 0| 0| 0| 0| 90th percentile 24hr ice accum(1/100in)
SLPP1 017|018 018|016 013|010 011|010 009|008 009|011 012|012 013|012 012|010 10th percentile MSLP(mb)
SLPP2 018|018 019|016 013|011 012|012 010|009 010|012 014|015 016|015 014|013 25th percentile MSLP(mb)
SLPP5 018|018 020|018 015|012 013|012 012|012 013|014 016|017 018|017 017|016 50th percentile MSLP(mb)
SLPP7 019|019 020|018 015|013 014|014 014|014 016|017 019|019 020|018 019|017 75th percentile MSLP(mb)
SLPP9 019|020 021|019 016|014 015|014 016|016 019|019 020|020 022|020 021|019 90th percentile MSLP(mb)