NBM Guidance for YELLOWSTONE MTN. (YEFO3)
44.5922N 122.4277W
Elevation 3087 ft
HOURLY TO 24 HOURS:
YEFO3 NBM V5.0 NBH GUIDANCE 8/27/2026 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 60 64 67 71 72 72 72 69 66 61 55 54 53 53 52 51 50 50 49 49 48 47 54 59 61 Temperature(F)
TSD 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 2 1 1 1 2 2 2 SD of temp(F)
DPT 54 53 52 50 47 48 48 48 48 48 48 49 49 49 49 48 48 47 47 46 46 46 48 50 51 Dew point temp(F)
DSD 2 2 2 3 3 3 2 2 2 2 3 2 2 2 2 2 2 2 2 2 2 3 2 2 1 Dew point temp SD(F)
WBG 59 62 64 67 66 66 65 62 59 56 52 52 51 51 50 49 49 49 47 48 47 47 52 56 58 Wet bulb temp(F)
SKY 47 31 33 17 9 5 4 5 6 5 4 10 9 6 3 5 4 6 6 14 40 49 15 9 3 Sky cover(%)
SSD 28 23 25 19 9 14 13 8 7 5 4 8 7 6 3 5 4 7 13 27 33 31 18 14 4 Sky cover SD(%)
WDR 23 23 24 25 27 28 29 30 31 32 32 32 33 34 34 35 36 35 34 36 0 35 35 35 33 Wind dir (deg)
WSP 3 3 3 3 3 4 4 4 4 4 4 3 3 2 2 2 2 1 1 1 1 1 1 1 2 Wind spd (kts)
WSD 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 Wind spd SD(kts)
GST 8 8 8 8 8 8 9 9 9 10 9 8 7 6 6 5 5 4 4 4 4 3 3 3 5 Wind gust(kts)
GSD 2 2 2 2 2 2 2 2 2 2 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 Wind gust SD(kts)
P01 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 PoP(%)
P06 5 0 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 12 0 0 12 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 79 77 75 75 75 77 78 78 79 79 79 79 78 78 78 78 79 79 79 78 79 78 78 79 80 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 -88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88-88 Ceiling height*
MVC 3 1 0 0 3 4 2 1 0 0 0 2 3 4 6 7 11 12 13 15 15 15 14 12 10 Prob cig<=3000ft(%) MVFR
IFC 2 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 6 5 4 3 4 4 4 2 1 Prob cig<1000ft(%) IFR
LIC 2 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 4 4 3 2 3 2 2 1 1 Prob cig<500ft(%) LIFR
LCB 22 70 80 80 33 19 28 25 45 38 11 27 26 23 36 60160170160210190140210100 80 Lowest cloud base*
VIS 100100100100100100100100100100100100100100100100100100100100100100100100100 Visibility*
MVV 8 6 5 4 5 4 4 3 3 0 0 0 0 0 0 2 4 6 7 9 11 12 11 9 8 Prob vsby<=5mi(%) MVFR
IFV 4 3 2 2 2 1 1 1 1 0 0 0 0 0 0 0 2 3 4 5 7 7 7 5 4 Prob vsby<3mi(%) IFR
LIV 2 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 2 3 4 4 4 3 2 Prob vsby<1mi(%) LIFR
MHT 21 28 33 37 39 41 40 39 34 25 7 4 3 3 3 3 2 2 3 2 3 2 5 14 24 MixHgt 100s feet AGL
TWD 23 23 23 24 25 26 27 28 29 32 33 34 34 36 2 6 6 6 4 3 3 2 2 34 32 Transport wind dir
TWS 6 7 7 8 8 8 8 8 8 8 6 6 6 5 4 3 3 2 3 3 3 3 2 3 3 Transport wind spd(kts)
SOL 34 50 74 79 78 79 68 52 28 13 4 3 2 2 0 0 0 0 0 0 0 3 17 32 46 Solar rad (10s W/m2)
3-HOURLY TO 60 HOURS:
YEFO3 NBM V5.0 NBS GUIDANCE 8/27/2026 1600 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 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 47 73 47 67 45 Max/Min Temp(F)
XND 3 2 3 2 3 SD of max/min temps(F)
TMP 72 69 55 53 50 49 54 65 71 68 55 51 48 48 51 60 65 62 51 49 48 47 51 Temperature(F)
TSD 2 2 2 1 1 1 2 2 2 2 1 2 2 3 1 2 2 2 2 1 1 1 1 SD of temp(F)
DPT 47 48 48 49 48 46 48 51 51 50 46 47 46 45 46 47 45 46 42 43 41 40 42 Dew point temp(F)
DSD 3 2 3 2 2 2 2 1 1 1 2 2 2 2 3 2 3 3 3 2 2 3 3 Dew point temp SD(F)
WBG 66 62 52 51 49 48 52 63 66 62 52 49 47 46 49 57 61 58 48 47 45 44 48 Wet bulb temp(F)
SKY 9 5 4 6 4 14 15 3 4 2 6 30 66 78 73 40 32 20 15 23 25 21 20 Sky cover(%)
SSD 9 8 4 6 4 27 18 4 5 2 9 35 37 41 19 20 18 15 12 15 16 15 16 Sky cover SD(%)
WDR 27 30 32 34 36 36 35 32 31 31 32 29 23 24 24 27 28 30 31 32 10 11 10 Wind dir (deg)
WSP 3 4 4 2 2 1 1 3 4 5 4 2 1 1 1 3 4 5 4 3 2 1 2 Wind spd (kts)
WSD 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1 Wind spd SD(kts)
GST 8 9 9 6 5 4 3 6 8 11 11 6 4 3 4 7 9 12 10 7 6 5 5 Wind gust(kts)
GSD 2 2 3 2 2 2 1 2 2 2 4 2 2 2 2 2 2 3 4 3 2 2 2 Wind gust SD(kts)
P06 5 0 0 0 2 7 15 9 2 5 2 6-hr PoP(%)
P12 0 2 15 3 6 12-hr PoP(%)
Q06 0 0 0 0 0 0 2 0 0 0 0 6-hr QPF(.01in)
Q12 0 0 2 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 1 2 0 0 6-hr Tstm prob(%)
T12 0 0 0 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 0 0 0 0 0 0 0 0 0 15 0 0 0 25 1 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 75 78 79 78 79 78 78 80 82 82 81 80 78 72 71 70 70 71 75 74 71 69 66 Snow level 100s feet MSL
I06 0 0 0 0 0 0 0 0 0 0 0 6-hr ice(1/100in)
CIG -88-88-88-88-88-88-88-88-88-88-88-88100 60 70-88-88-88-88-88-88-88-88 Ceiling height*
IFC 0 0 0 1 6 3 4 0 0 0 1 5 5 6 5 2 0 0 2 4 6 6 9 Prob cig<1000ft(%) IFR
LCB 33 25 11 23160210210100100100 44 6 37 1 2 12 21 39 29180200130110 Lowest cloud base*
VIS 100100100100100100100100100100100100100100100100100100100100100100100 Visibility*
IFV 2 1 0 0 2 5 7 2 2 1 1 1 2 5 7 2 1 0 1 0 3 5 6 Prob vsby<3mi(%) IFR
MHT 39 39 7 3 2 2 5 30 38 38 9 2 3 4 9 42 49 48 10 3 1 1 3 MixHgt 100s feet AGL
TWD 25 28 33 36 6 3 2 32 29 30 34 31 25 27 27 29 29 30 32 35 8 9 7 Transport wind dir
TWS 8 8 6 5 3 3 2 4 6 8 8 5 3 4 3 6 8 9 7 5 3 3 3 Transport wind spd(kts)
SOL 78 52 4 2 0 0 17 59 82 55 5 3 0 0 5 24 51 60 20 10 0 0 4 Solar rad (10s W/m2)
DAILY TO 7 DAYS:
YEFO3 NBM V5.0 NBE GUIDANCE 8/27/2026 1600 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 20| 32 44| 56 68| 80 92|104 116|128 140|152 164|176 188 Forecast Hour
TXN 47| 73 47| 67 45| 71 47| 74 49| 69 48| 66 48| 67 47 52 74 Max/Min Temp(F)
XND 3| 2 3| 2 3| 3 3| 4 3| 4 3| 6 3| 7 4 SD of max/min temps(F)
TMP 49| 68 48| 62 47| 66 48| 69 50| 64 51| 61 51| 62 49 Temperature(F)
TSD 1| 2 3| 2 1| 3 3| 4 3| 5 3| 6 4| 7 4 SD of temp(F)
DPT 46| 50 45| 46 40| 46 38| 48 44| 52 46| 52 46| 52 43 Dew point temp(F)
DSD 2| 1 2| 3 3| 2 2| 3 4| 3 3| 4 4| 4 4 Dew point temp SD(F)
WBG 48| 62 46| 58 44| 60 44| 62 47| 61 49| 58 49| 59 47 Wet bulb temp(F)
SKY 14| 2 78| 20 21| 12 23| 33 60| 35 69| 43 62| 33 38 Sky cover(%)
SSD 27| 2 41| 15 15| 23 29| 28 31| 25 22| 27 20| 27 34 Sky cover SD(%)
WDR 36| 31 24| 30 11| 31 9| 28 15| 25 19| 26 18| 27 13 Wind dir (deg)
WSP 1| 5 1| 5 1| 4 1| 4 1| 5 2| 4 2| 3 2 Wind spd (kts)
WSD 1| 1 1| 1 1| 1 1| 1 1| 2 1| 2 2| 3 1 Wind spd SD(kts)
GST 4| 11 3| 12 5| 8 5| 8 5| 11 7| 10 8| 8 7 Wind gust(kts)
GSD 2| 2 2| 3 2| 2 2| 3 3| 4 4| 6 7| 6 4 Wind gust SD(kts)
P12 0| 2 15| 3 6| 2 0| 0 12| 20 32| 42 47| 48 36 -99-99 12-hr PoP(%)
Q12 0| 0 2| 0 0| 0 0| 0 0| 4 5| 17 29| 29 17 12-hr QPF(.01in)
Q24 | 2| 0| 0| 0| 9| 46| 46 49 24-hr QPF(.01in)
DUR 0| 0 0| 0 0| 0 0| 0 0| 1 1| 4 4| 4 4 Duration of precip(hrs)
T12 0| 0 0| 2 0| 0 1| 1 2| 9 6| 7 7| 11 6 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 0| 1 0| 0 1| 2 9| 34 30| 43 39| 37 27 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 78| 82 72| 71 69| 85 88| 93 89| 86 83| 86 80| 84 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| 50 2| 35 7| 46 7| 42 5| 24 1| 11 3| 17 2 Solar rad (10s W/m2)
DAY 8, 9 AND 10:
YEFO3 NBM V5.0 NBX GUIDANCE 8/27/2026 1600 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 200 212|224 236|248 260 Forecast Hour
TXN 70 48| 73 50| 75 52 Max/Min Temp(F)
XND 10 6| 10 6| 10 6 SD of max/min temps(F)
TMP 66 51| 69 52| 70 54 Temperature(F)
TSD 10 7| 10 7| 10 6 SD of temp(F)
DPT 50 41| 50 41| 50 42 Dew point temp(F)
DSD 5 6| 7 7| 7 7 Dew point temp SD(F)
WBG 61 47| 63 48| 63 50 Wet bulb temp(F)
SKY 27 34| 27 34| 25 33 Sky cover(%)
SSD 19 24| 22 14| 12 17 Sky cover SD(%)
WDR 30 12| 30 2| 32 8 Wind dir (deg)
WSP 3 2| 3 2| 3 2 Wind spd (kts)
WSD 2 2| 2 2| 2 2 Wind spd SD(kts)
GST 8 8| 7 6| 7 7 Wind gust(kts)
GSD 6 4| 4 5| 4 6 Wind gust SD(kts)
P12 29 21| 21 18| 13 13 12-hr PoP(%)
Q12 8 13| 3 3| 2 4 12-hr QPF(.01in)
Q24 21| 6| 6 24-hr QPF(.01in)
DUR 3 3| 1 1| 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 34 21| 15 12| 15 11 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 82 79| 85 81| 88 87 Snow level 100s feet MSL
I12 0 0| 0 0| 0 0 12-hr ice(1/100in)
SOL 13 12| 20 9| 25 19 Solar rad (10s W/m2)
STANDARD DEVIATION AND THRESHOLD PROBABILITIES:
YEFO3 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 49| 73 47| 67 45| 71 47| 74 49| 69 48| 66 48| 67 47| 70 48| 70 Mean min/max temp(F)
TXNSD 3| 2 3| 2 3| 3 3| 4 3| 4 3| 6 3| 7 4| 10 6| 10 SD min/max temp(F)
TXNP1 46| 69 44| 65 42| 67 43| 70 45| 64 44| 59 45| 58 42| 59 42| 59 10th percentile min/max temp(F)
TXNP2 47| 72 45| 66 43| 69 44| 72 46| 66 45| 62 46| 62 44| 64 43| 64 25th percentile min/max temp(F)
TXNP5 48| 73 47| 67 45| 72 47| 74 49| 68 48| 67 48| 66 46| 67 46| 67 50th percentile min/max temp(F)
TXNP7 52| 74 50| 68 48| 74 50| 77 52| 73 49| 69 50| 71 49| 77 51| 77 75th percentile min/max temp(F)
TXNP9 53| 75 51| 69 49| 76 52| 80 53| 75 51| 74 51| 77 52| 85 58| 85 90th percentile min/max temp(F)
WSPP1 1| 4 0| 3 1| 3 1| 3 1| 3 1| 1 1| 1 1| 1 1| 1 10th percentile wnd(kts)
WSPP2 1| 5 0| 5 1| 3 1| 3 1| 4 2| 3 1| 2 2| 2 2| 2 25th percentile wnd(kts)
WSPP5 1| 5 1| 5 2| 4 2| 4 2| 5 2| 4 3| 3 2| 3 3| 3 50th percentile wnd(kts)
WSPP7 2| 6 1| 6 2| 5 3| 5 2| 6 3| 5 3| 6 3| 5 3| 5 75th percentile wnd(kts)
WSPP9 2| 7 2| 7 3| 5 3| 6 3| 7 4| 7 5| 7 4| 6 5| 6 90th percentile wnd(kts)
W24P1 | 5 | 6 | 5 | 4 | 5 | 5 | 3 | 3 | 4 10th percentile 24hr sustained wnd exceedance(kts)
W24P2 | 6 | 6 | 7 | 5 | 5 | 6 | 5 | 5 | 5 25th percentile 24hr sustained wnd exceedance(kts)
W24P5 | 6 | 7 | 7 | 6 | 6 | 7 | 7 | 6 | 6 50th percentile 24hr sustained wnd exceedance(kts)
W24P7 | 7 | 8 | 8 | 6 | 7 | 8 | 8 | 8 | 7 75th percentile 24hr sustained wnd exceedance(kts)
W24P9 | 7 | 8 | 9 | 7 | 7 | 9 | 9 | 11 | 8 90th percentile 24hr sustained wnd exceedance(kts)
G24P1 | 11 | 12 | 12 | 9 | 10 | 11 | 10 | 8 | 9 10th percentile 24hr wnd gust exceedance(kts)
G24P2 | 12 | 14 | 14 | 10 | 10 | 13 | 13 | 11 | 10 25th percentile 24hr wnd gust exceedance(kts)
G24P5 | 14 | 16 | 16 | 11 | 12 | 16 | 17 | 14 | 13 50th percentile 24hr wnd gust exceedance(kts)
G24P7 | 15 | 18 | 18 | 13 | 14 | 19 | 21 | 19 | 18 75th percentile 24hr wnd gust exceedance(kts)
G24P9 | 16 | 19 | 20 | 15 | 17 | 23 | 29 | 31 | 23 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| 13| 6| 0| 50th percentile 24hr QPF(1/100in)
Q24P7 | 0| 0| 0| 0| 17| 93| 67| 17| 75th percentile 24hr QPF(1/100in)
Q24P9 | 10| 0| 0| 0| 42| 144| 140| 61| 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|014 018|016 017|011 012|008 012|011 015|012 014|014 014|013 013|011 10th percentile MSLP(mb)
SLPP2 018|015 018|017 018|013 012|009 014|013 016|015 017|015 016|014 015|013 25th percentile MSLP(mb)
SLPP5 018|015 019|017 020|014 013|011 014|014 017|016 019|017 018|016 017|015 50th percentile MSLP(mb)
SLPP7 018|016 019|018 021|016 015|012 016|015 019|018 021|019 021|018 019|018 75th percentile MSLP(mb)
SLPP9 019|016 020|019 021|018 016|013 017|015 020|020 023|021 022|020 022|019 90th percentile MSLP(mb)