NBM Guidance for GRANDAD (GDFO3)
43.4158N 122.5772W
Elevation 2913 ft
HOURLY TO 24 HOURS:
GDFO3 NBM V5.0 NBH GUIDANCE 8/27/2026 1500 UTC
UTC 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 Time (UTC)
PDT 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 Time (PDT)
TMP 60 64 68 71 75 77 79 79 79 78 74 68 63 61 59 58 57 55 54 54 53 52 51 54 59 Temperature(F)
TSD 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 SD of temp(F)
DPT 56 57 57 55 52 50 48 47 47 46 46 45 45 45 46 46 46 46 46 46 46 46 46 47 48 Dew point temp(F)
DSD 1 1 2 2 3 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2 2 2 2 2 2 Dew point temp SD(F)
WBG 59 61 66 68 70 71 70 68 68 67 64 59 55 55 54 53 53 51 52 51 50 49 49 52 55 Wet bulb temp(F)
SKY 50 40 52 21 11 6 3 2 2 2 2 3 3 3 1 3 3 2 3 3 6 8 10 6 1 Sky cover(%)
SSD 31 42 44 27 11 6 4 3 3 3 4 4 4 4 2 3 3 3 3 3 6 7 12 10 2 Sky cover SD(%)
WDR 27 27 27 26 27 27 27 29 31 31 32 35 36 1 5 7 10 9 9 8 8 9 7 32 28 Wind dir (deg)
WSP 1 1 2 2 3 3 3 3 3 3 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 Wind spd (kts)
WSD 1 0 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 0 0 0 0 0 0 Wind spd SD(kts)
GST 2 3 4 6 7 9 10 10 9 8 6 5 5 4 4 3 3 3 3 3 2 2 2 2 3 Wind gust(kts)
GSD 1 1 1 1 2 2 2 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 Wind gust SD(kts)
P01 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1-hr PoP(%)
P06 0 1 0 6-hr PoP(%)
Q01 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 QPF (.01")
T01 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 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 0 12 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 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 98 94 91 89 89 89 90 90 91 93 95 96 97 96 96 94 92 91 89 88 87 86 85 84 83 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 27-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88 Ceiling height*
MVC 42 20 13 7 8 4 4 3 3 3 2 0 0 2 4 5 12 14 16 17 19 20 19 18 16 Prob cig<=3000ft(%) MVFR
IFC 18 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 7 7 8 8 9 7 7 5 Prob cig<1000ft(%) IFR
LIC 9 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 4 5 5 6 7 7 6 5 Prob cig<500ft(%) LIFR
LCB 10 18 26 31 34 35 33 33 37 31 31 29 20 15 29 30 29 28 15 90 70 70 60170220 Lowest cloud base*
VIS 100100100100100100100100100100100100100100100100100100100100100100100100100 Visibility*
MVV 12 5 2 1 1 0 0 1 0 0 0 0 0 0 0 0 5 7 10 12 14 14 15 12 8 Prob vsby<=5mi(%) MVFR
IFV 10 4 2 1 1 0 0 0 0 0 0 0 0 0 0 0 4 5 7 8 10 11 11 10 7 Prob vsby<3mi(%) IFR
LIV 7 3 2 1 1 0 0 0 0 0 0 0 0 0 0 0 3 4 5 6 7 7 8 7 5 Prob vsby<1mi(%) LIFR
MHT 16 23 28 36 41 43 44 44 44 38 26 9 5 4 3 5 4 4 4 4 5 4 4 5 12 MixHgt 100s feet AGL
TWD 23 23 23 24 24 25 26 27 28 30 34 34 36 0 2 3 3 4 5 5 4 3 4 2 1 Transport wind dir
TWS 4 6 6 8 8 8 7 7 7 8 7 8 8 7 6 5 4 4 4 4 4 4 4 3 4 Transport wind spd(kts)
SOL 24 41 56 78 83 76 69 61 50 32 14 4 3 2 2 0 0 0 0 0 0 0 3 17 34 Solar rad (10s W/m2)
3-HOURLY TO 60 HOURS:
GDFO3 NBM V5.0 NBS GUIDANCE 8/27/2026 1500 UTC
DT /AUG 28 /AUG 29 /AUG 30
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 06 09 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 Forecast Hour
TXN 51 80 49 75 47 Max/Min Temp(F)
XND 3 2 3 2 4 SD of max/min temps(F)
TMP 77 79 68 59 55 53 54 69 77 77 67 57 53 51 50 62 71 72 62 55 50 47 48 Temperature(F)
TSD 2 2 2 2 2 1 1 2 2 2 2 2 1 2 2 3 2 2 2 1 1 2 2 SD of temp(F)
DPT 50 47 45 46 46 46 47 52 50 50 47 46 47 47 48 49 43 44 42 41 41 41 40 Dew point temp(F)
DSD 3 3 3 2 2 2 2 2 4 2 2 2 2 2 2 2 3 2 3 3 2 3 3 Dew point temp SD(F)
WBG 71 68 59 54 51 50 52 65 70 67 59 52 50 49 50 60 65 63 55 50 47 45 45 Wet bulb temp(F)
SKY 6 2 3 1 2 6 6 1 2 1 6 8 12 40 58 20 14 7 9 13 10 13 8 Sky cover(%)
SSD 6 3 4 2 3 6 10 1 2 2 7 8 13 33 14 15 11 17 8 28 22 11 7 Sky cover SD(%)
WDR 27 31 35 5 9 8 32 30 30 31 33 31 27 18 33 31 31 32 33 2 7 9 9 Wind dir (deg)
WSP 3 3 2 2 1 1 1 3 4 4 2 2 0 0 1 2 4 4 2 2 2 2 2 Wind spd (kts)
WSD 1 1 1 1 1 0 0 0 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 Wind spd SD(kts)
GST 9 9 5 4 3 2 2 5 10 10 5 5 2 2 2 4 9 11 6 6 4 4 4 Wind gust(kts)
GSD 2 1 2 1 1 1 1 1 1 2 2 2 1 1 1 1 2 2 2 2 1 1 1 Wind gust SD(kts)
P06 0 1 0 0 0 2 3 2 0 1 0 6-hr PoP(%)
P12 1 0 6 0 1 12-hr PoP(%)
Q06 0 0 0 0 0 0 0 0 0 0 0 6-hr QPF(.01in)
Q12 0 0 0 0 0 12-hr QPF(.01in)
DUR 0 0 0 0 0 Duration of precip(hrs)
T03 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3-hr Tstm prob(%)
T06 0 0 0 0 0 0 0 0 0 0 0 6-hr Tstm prob(%)
T12 0 0 0 0 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 0 0 0 0 0 0 0 0 20 20 20 32 0 0 0 0 0 0 0 0 Cond prob of rain(%)
S06 0 0 0 0 0 0 0 0 0 0 0 6-hr snow(1/10in)
SLV 89 91 96 96 91 87 84 83 87 87 88 86 82 80 81 78 74 75 78 77 75 73 71 Snow level 100s feet MSL
I06 0 0 0 0 0 0 0 0 0 0 0 6-hr ice(1/100in)
CIG -88-88-88-88-88-88-88-88-88-88-88-88-88-88 90-88-88-88-88-88-88-88-88 Ceiling height*
IFC 0 0 0 0 7 8 7 0 0 0 1 7 7 10 10 2 0 0 3 6 7 10 14 Prob cig<1000ft(%) IFR
LCB 35 37 29 29 28 70170210 70 60 31 7 5 1 4 90110-88120190190160160 Lowest cloud base*
VIS 100100100100100100100100100100100100100 70 80100100100100100100 80 90 Visibility*
IFV 0 0 0 0 5 10 10 2 1 0 0 4 8 13 9 0 0 0 0 3 7 13 10 Prob vsby<3mi(%) IFR
MHT 43 44 9 3 4 5 5 29 47 44 14 3 2 2 8 39 49 48 12 4 1 1 3 MixHgt 100s feet AGL
TWD 25 28 34 2 4 4 2 29 27 32 33 32 0 32 34 31 32 33 34 3 6 7 7 Transport wind dir
TWS 8 7 8 6 4 4 3 5 7 8 8 6 3 4 3 5 7 9 9 7 5 4 4 Transport wind spd(kts)
SOL 76 50 4 2 0 0 17 62 85 56 5 3 0 0 3 27 75 63 21 10 0 0 4 Solar rad (10s W/m2)
DAILY TO 7 DAYS:
GDFO3 NBM V5.0 NBE GUIDANCE 8/27/2026 1500 UTC
FRI 28 |SAT 29 |SUN 30 |MON 31 |TUE 01 |WED 02 |THU 03 |FRI 04 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 21| 33 45| 57 69| 81 93|105 117|129 141|153 165|177 189 Forecast Hour
TXN 51| 80 49| 75 47| 80 50| 82 52| 76 49| 74 50| 74 49 51 81 Max/Min Temp(F)
XND 3| 2 3| 2 4| 4 4| 3 3| 4 3| 6 3| 8 4 SD of max/min temps(F)
TMP 53| 77 51| 72 47| 77 51| 78 52| 73 53| 71 54| 71 51 Temperature(F)
TSD 1| 2 2| 2 2| 4 2| 4 3| 5 3| 7 4| 8 4 SD of temp(F)
DPT 46| 50 47| 44 41| 43 39| 45 46| 48 47| 47 46| 47 44 Dew point temp(F)
DSD 2| 2 2| 2 3| 3 3| 3 3| 3 3| 5 4| 5 5 Dew point temp SD(F)
WBG 50| 67 49| 63 45| 66 47| 66 50| 64 51| 63 50| 63 48 Wet bulb temp(F)
SKY 6| 1 40| 7 13| 6 21| 22 41| 25 51| 35 50| 16 33 Sky cover(%)
SSD 6| 2 33| 17 11| 26 17| 25 32| 31 27| 21 25| 16 23 Sky cover SD(%)
WDR 8| 31 18| 32 9| 32 10| 29 14| 28 13| 28 14| 29 10 Wind dir (deg)
WSP 1| 4 0| 4 2| 3 2| 4 1| 3 1| 3 2| 3 2 Wind spd (kts)
WSD 0| 1 0| 1 1| 1 1| 1 1| 1 1| 2 1| 2 1 Wind spd SD(kts)
GST 2| 10 2| 11 4| 8 3| 10 2| 10 3| 9 4| 10 3 Wind gust(kts)
GSD 1| 2 1| 2 1| 1 1| 2 1| 2 2| 4 3| 4 2 Wind gust SD(kts)
P12 1| 0 6| 0 1| 1 0| 0 6| 18 27| 26 38| 40 25 -99-99 12-hr PoP(%)
Q12 0| 0 0| 0 0| 0 0| 0 0| 0 2| 4 12| 9 0 12-hr QPF(.01in)
Q24 | 0| 0| 0| 0| 2| 16| 9 26 24-hr QPF(.01in)
DUR 0| 0 0| 0 0| 0 0| 0 0| 0 1| 1 3| 3 0 Duration of precip(hrs)
T12 0| 0 0| 0 0| 0 1| 1 2| 11 4| 5 6| 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 0| 0 20| 0 0| 0 0| 1 4| 29 19| 27 29| 33 18 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 87| 87 80| 75 73| 87 96| 97 92| 88 82| 90 83| 89 80 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 5| 52 2| 42 8| 48 8| 45 7| 16 5| 28 3| 46 7 Solar rad (10s W/m2)
DAY 8, 9 AND 10:
GDFO3 NBM V5.0 NBX GUIDANCE 8/27/2026 1500 UTC
SAT 05| SUN 06| MON 07
UTC 00 12 |00 12 |00 12 Time (UTC)
PDT 17 05 |17 05 |17 05 Time (PDT)
FHR 201 213|225 237|249 261 Forecast Hour
TXN 77 49| 79 52| 82 53 Max/Min Temp(F)
XND 10 7| 10 6| 9 5 SD of max/min temps(F)
TMP 74 52| 76 54| 78 55 Temperature(F)
TSD 10 7| 10 6| 10 6 SD of temp(F)
DPT 45 42| 46 42| 46 43 Dew point temp(F)
DSD 6 6| 7 7| 7 7 Dew point temp SD(F)
WBG 64 48| 65 50| 66 50 Wet bulb temp(F)
SKY 17 30| 17 32| 18 26 Sky cover(%)
SSD 14 22| 10 7| 10 15 Sky cover SD(%)
WDR 31 11| 32 8| 32 9 Wind dir (deg)
WSP 3 2| 3 2| 3 2 Wind spd (kts)
WSD 2 1| 2 1| 1 1 Wind spd SD(kts)
GST 10 4| 9 3| 9 4 Wind gust(kts)
GSD 4 2| 3 3| 3 2 Wind gust SD(kts)
P12 17 11| 14 14| 12 12 12-hr PoP(%)
Q12 0 0| 0 0| 3 2 12-hr QPF(.01in)
Q24 0| 0| 5 24-hr QPF(.01in)
DUR 0 0| 0 0| 1 1 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 11| 18 10| 15 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 86 81| 90 82| 92 89 Snow level 100s feet MSL
I12 0 0| 0 0| 0 0 12-hr ice(1/100in)
SOL 21 18| 33 18| 33 20 Solar rad (10s W/m2)
STANDARD DEVIATION AND THRESHOLD PROBABILITIES:
GDFO3 NBM V5.0 NBP GUIDANCE 8/27/2026 1300 UTC
FRI 28| SAT 29| SUN 30| MON 31| TUE 01| WED 02| THU 03| FRI 04| SAT 05|
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 52| 80 50| 75 47| 80 51| 82 52| 76 49| 74 50| 74 49| 77 49| 77 Mean min/max temp(F)
TXNSD 3| 2 3| 2 4| 4 4| 3 3| 4 3| 6 3| 8 4| 10 7| 10 SD min/max temp(F)
TXNP1 49| 77 47| 72 43| 76 46| 78 47| 72 46| 66 47| 64 43| 67 41| 67 10th percentile min/max temp(F)
TXNP2 50| 79 47| 73 44| 78 48| 80 49| 74 47| 70 48| 68 47| 70 43| 70 25th percentile min/max temp(F)
TXNP5 51| 80 49| 75 46| 81 50| 82 52| 76 49| 75 50| 74 49| 75 48| 75 50th percentile min/max temp(F)
TXNP7 56| 81 54| 76 52| 83 54| 85 54| 79 52| 78 52| 80 51| 84 53| 84 75th percentile min/max temp(F)
TXNP9 57| 83 55| 77 53| 85 55| 87 56| 81 53| 82 54| 83 54| 92 58| 92 90th percentile min/max temp(F)
WSPP1 1| 3 0| 3 1| 2 1| 2 0| 2 0| 1 0| 1 1| 2 1| 1 10th percentile wnd(kts)
WSPP2 1| 3 0| 3 1| 3 1| 3 1| 3 1| 2 1| 2 1| 2 1| 2 25th percentile wnd(kts)
WSPP5 1| 4 1| 4 2| 3 2| 4 1| 3 1| 3 2| 3 2| 3 2| 3 50th percentile wnd(kts)
WSPP7 1| 4 1| 4 2| 3 2| 4 1| 4 2| 4 2| 4 2| 4 3| 4 75th percentile wnd(kts)
WSPP9 2| 5 1| 5 2| 4 3| 5 2| 5 2| 5 3| 5 3| 5 3| 5 90th percentile wnd(kts)
W24P1 | 3 | 4 | 4 | 3 | 4 | 4 | 3 | 3 | 3 10th percentile 24hr sustained wnd exceedance(kts)
W24P2 | 4 | 5 | 5 | 4 | 5 | 5 | 4 | 4 | 4 25th percentile 24hr sustained wnd exceedance(kts)
W24P5 | 5 | 5 | 6 | 4 | 5 | 6 | 5 | 5 | 5 50th percentile 24hr sustained wnd exceedance(kts)
W24P7 | 5 | 6 | 6 | 5 | 6 | 6 | 6 | 6 | 6 75th percentile 24hr sustained wnd exceedance(kts)
W24P9 | 6 | 7 | 7 | 5 | 7 | 7 | 7 | 8 | 8 90th percentile 24hr sustained wnd exceedance(kts)
G24P1 | 10 | 11 | 12 | 10 | 11 | 11 | 10 | 9 | 9 10th percentile 24hr wnd gust exceedance(kts)
G24P2 | 11 | 12 | 12 | 10 | 12 | 12 | 12 | 11 | 11 25th percentile 24hr wnd gust exceedance(kts)
G24P5 | 12 | 13 | 13 | 11 | 13 | 14 | 13 | 13 | 13 50th percentile 24hr wnd gust exceedance(kts)
G24P7 | 13 | 14 | 14 | 12 | 14 | 15 | 16 | 15 | 15 75th percentile 24hr wnd gust exceedance(kts)
G24P9 | 14 | 15 | 16 | 13 | 15 | 17 | 19 | 20 | 18 90th percentile 24hr wnd gust exceedance(kts)
Q24P1 | 0| 0| 0| 0| 0| 0| 0| 0| 10th percentile 24hr QPF(1/100in)
Q24P2 | 0| 0| 0| 0| 0| 0| 0| 0| 25th percentile 24hr QPF(1/100in)
Q24P5 | 0| 0| 0| 0| 0| 0| 0| 0| 50th percentile 24hr QPF(1/100in)
Q24P7 | 0| 0| 0| 0| 5| 38| 26| 0| 75th percentile 24hr QPF(1/100in)
Q24P9 | 3| 0| 0| 0| 25| 87| 64| 19| 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|013 018|014 017|010 012|007 012|010 015|011 014|013 015|011 013|010 10th percentile MSLP(mb)
SLPP2 017|013 018|015 018|011 012|008 014|012 017|014 018|014 016|013 015|012 25th percentile MSLP(mb)
SLPP5 018|014 019|016 019|012 013|010 015|013 018|015 019|016 018|015 017|014 50th percentile MSLP(mb)
SLPP7 018|014 019|016 020|014 015|010 016|014 019|017 021|017 020|016 019|016 75th percentile MSLP(mb)
SLPP9 018|015 020|017 021|016 016|012 017|015 020|018 023|019 021|019 022|018 90th percentile MSLP(mb)