Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 5:57AM||Sunset 7:40PM||Monday August 10, 2020 9:27 AM PDT (16:27 UTC)||Moonrise 11:42PM||Moonset 12:34PM||Illumination 58%|
7 Day Forecast for Marine Location Near Goldfield, NVHourly EDIT Help
Area Discussion for - Las Vegas, NV  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KVEF 101002 AFDVEF
Area Forecast Discussion National Weather Service Las Vegas NV 303 AM PDT Mon Aug 10 2020
SYNOPSIS. Expect hot, dry and breezy conditions through much of the upcoming week with temperatures expected to be hottest at weeks end. Without any significant precipitation on the horizon, the main concern will be elevated wildfire spread risk along with continued mid-summer heat. By late week into the weekend, an increase in heat may be in store that could result in a higher risk of heat related impacts.
SHORT TERM. today and Tuesday.
Quiet weather is expected across the region through Tuesday with temperatures forecast to be slightly above normal. Skies will be generally clear except for afternoon buildups over the Sierra where a small chance of a shower or isolated thunderstorm is possible. Hazy conditions will continue across parts of the area due to smoke from the Apple fire but surface visibility reductions are not anticipated. Afternoon breezes are likely today and Tuesday with gusts 20-30 mph over the southeast CWA today and more widespread gusts of 20-25 mph on Tuesday. Moisture is forecast to increase to our south as Tropical Storm Elida, currently south of Baja, strengthens to a hurricane and moves WNW across open waters. Precipitable water trends show this system sending moisture northward into northwestern Mexico and southwestern Arizona through Tuesday.
LONG TERM. Wednesday through the Weekend. Agree in a large part with the day shifts discussion on the pros and cons of the long term period as it pertains to moisture increase and the implications for convection late week.
While the overall outlook is relatively unchanged in the 00Z model suite, it does appear that two things are increasing in confidence: a period of slowly increasing PWAT values across the southern third of the CWA and a building subtropical ridge positioning over the Great Basin by the weekend. While the previous AFD did a thorough job of what uncertainties exist with this synoptic set up and its implications for PoPs, the more obvious signal this will flag is increased heat risk over the weekend and into next week.
A close examination of the Day 5-7 12Z ensemble suite shows further increased confidence in this sub tropical high inching farther west by the weekend, strengthening, and eventually settling over the Colorado River Valley on Sunday. Nearly 40% of the total 90 ensemble members of the EC/GEFS/CMC are suggesting a more amplified ridge than the mean, with significant contributions from all three and the EC leading that solution. 12z ECELAS reflects the increase above 110 degrees for KLAS and would not be surprised to see that value increase further if trends hold. Also of note is the Min Ts again increasing into the mid to upper 80s potentially. Extrapolating this to heat risk, this safely raises the category to major for the LV Valley, Co River Valley, and southern Mohave County. Thus, very soon the discussion for Excessive Heat Watches will likely be needed, should these model trends continue.
FIRE WEATHER. Hot and dry conditions persist with elevated fire conditions for the region through much of the upcoming week. Winds across Mohave County could approach critical thresholds both this afternoon and Tuesday afternoon. With the brief and isolated nature of the wind forecast at the moment, no fire hazard products were issued.
For northwest Arizona . Afternoon breezes will increase again today and Tuesday, leading to elevated and near-critical conditions as afternoon humidity drops near the single digits with poor overnight recovery.
For the southern Great Basin . Afternoon cumulus buildups will increase a little bit each afternoon through midweek, with some isolated dry lightning concerns in northern fringes of zones 460 and 461 by Tuesday.
AVIATION. For McCarran . Light and variable winds early this morning will become easterly and should gradually lead to enhanced southeast winds over 10 knots mid-afternoon through early evening. A few gusts to 20 knots are possible. Typical light south-southwest winds will develop around sunset and continue overnight into early Tuesday morning under a clear sky. For the rest of southern Nevada, northwest Arizona and southeast California . No significant weather is expected across the region today and tonight. Winds at TAF sites gusting 15 to 20 knots will be common in the afternoon hours otherwise speeds will generally be less than 10 knots under mostly clear skies. Areas of smoke and haze will linger, especially southeast California due to ongoing wildfires.
SPOTTER INFORMATION STATEMENT. Spotters are encouraged to report any significant weather or impacts according to standard operating procedures.
SHORT TERM . Salmen LONG TERM . TB3 AVIATION . Adair
For more forecast information . see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Tonopah, Tonopah Airport, NV||52 mi||32 min||N 0||10.00 mi||Fair||75°F||17°F||11%||1013.9 hPa|
Link to 5 minute data for KTPH
Wind History from TPH (wind in knots)
|1 day ago||S||S||S|
|2 days ago||S||S|
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GEOS Local Image of Southwest EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Las Vegas, NV (12,3,4,5)(on/off)  Help
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