NDAWX
Non-Discretion WX
Arizona · MST
The Grand Canyon State
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01 / SURFACE OBSERVATIONSLoading METARs…
02 / NOAA HRRRLoading model samples…
03 / NWS PHOENIXLoading forecast discussion…
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Arizona weather map

ESTIMATED SURFACE FIELD
On the map
Surface

Station watch

12 AIRFIELDS · SELECT A STATION TO LOCATE IT
National Weather Service · Arizona

Warnings, watches & advisories

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Expand an alert for its map switch, official description and recommended actions. Flood Watch areas start hidden; other alert types start visible. Hidden areas still have bulletin text here. Updates every five minutes.

Luke Air Force Base · KLUF

KLUF weather watch & criteria

Luke WWA criteria

Reference from the Luke AFB criteria sheet you supplied. These comparisons are not issued Luke watches, warnings or advisories.

Automatic checks cover reported wind thresholds, the temperature/dewpoint ICE FOD screen, and FITS chart estimates. Other criteria require additional verified information. NWS alerts remain separate below.

Fighter Index of Thermal Stress

Waiting for KLUF temperature and dewpoint.
FITS chart & method

Estimated from your Table 6.1 using temperature and dewpoint. Values between cells use linear interpolation. Color bands follow the chart: green below 90°F, yellow 90–<100°F, red ≥100°F. The accompanying paragraph describes danger as “over 100°F”; the displayed category follows the chart colors. These are index values, not ambient temperatures or issued advisories.

NormalCautionDanger
Warning criteria 9
CriterionVerification thresholdDLT
(as printed)
Damaging hail ≥¾ inch.—1:00
Forecast damaging winds ≥50 kt.50 kt2:00
Freezing precipitation expected.—1:00
Hail ≥½ but <¾ inch.½ inch1:00
Gusting high winds ≥35 but <50 kt.35 kt30
Observed lightning within 5 NM.—0
Forecast heavy rain ≥1 inch within 6 hours.—1:00
Sustained high winds ≥35 but <50 kt.35 kt30
Tornado or funnel cloud expected.—30
Watch criteria 8
CriterionVerification thresholdDLT
(as printed)
Potential for damaging hail ≥¾ inch.—0
Potential for damaging winds ≥50 kt.—0
Potential for freezing precipitation.—0
Potential for hail ≥½ but <¾ inch.—0
Potential for heavy rain ≥1 inch within 6 hours; flooding possible.—0
Potential for lightning within 25 NM of the airfield.—30
Potential for lightning within 5 NM of the airfield.—30
Potential for tornado or funnel cloud.—0
Advisory criteria 16
CriterionVerification thresholdDLT
(as printed)
Observed crosswinds ≥25 kt, including gusts, at Luke AFB.—0
Observed crosswinds ≥15 but <20 kt, including gusts, at Luke AFB.—0
Observed crosswinds ≥10 but <15 kt, including gusts, at Luke AFB.—0
Observed crosswinds ≥20 but <25 kt, including gusts, at Luke AFB.—0
Gusting surface winds ≥25 but <35 kt. “Winds from:” has no direction filled in.25 kt30
Observed chill stress: “No Fly Zone” chill index <−25°F (approximately −31.7°C).—0
Observed chill stress: Caution chill index <15°F (approximately −9.4°C).—0
Potential observed F-16 ICE FOD conditions: temperature ≤7°C (45°F on sheet), dewpoint depression ≤5°C (9°F).—0
Observed lightning or thunderstorms within 10 NM of the airfield.—0
Observed lightning or thunderstorms within 35 NM of the airfield.—0
Observed lightning or thunderstorms within 25 NM of the airfield.—0
Observed low-level wind shear.—0
Observed moderate or greater icing.—0
Observed CAT II severe or greater turbulence.—0
Observed thermal stress: FITS Caution (yellow chart band, 90–<100°F index / 32.2–<37.8°C index).FITS chart: yellow0
Observed thermal stress: FITS Danger (red chart band, ≥100°F index / ≥37.8°C index).FITS chart: red0

NWS alerts affecting KLUF

Public NWS alerts for the airport point. This panel does not include official military/base-issued weather warnings or operational advisories.

NOAA Aviation Weather Center

SIGMETs & G-AIRMETs

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Areas and freezing-level contours intersecting the current map view. Click an outline or expand a product for details. G-AIRMETs replace text AIRMETs over Arizona. Refreshes every five minutes; expired SIGMETs are removed.

Open AWC SIGMETs · Open AWC G-AIRMETs. Recorded snapshots participate in playback; no aviation history is available before this page session.

National Weather Service · Phoenix / PSR

Area Forecast Discussion

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Latest Phoenix forecast discussion
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NOAA HRRR · experimental estimates

Cloud structure & potential icing

White map shading shows modeled cloud fraction. Select Icing composite to combine potential cloud/moisture overlap at 0 to −22°C across the sampled pressure levels. Click the amber map shading for estimated height bands in feet AGL. Below-model-ground samples are excluded.

Select an airport and use Load / refresh profile. Map clicks show enabled-layer readings; use Load / refresh profile for a detailed point profile. Radar can obscure cloud shading.

Potential conditions are not a forecast of icing occurrence or severity. Supercooled liquid water is not measured here. No flag does not establish icing-free conditions. Use official aviation icing products and pilot reports for flight decisions.

AWC icing guidance ↗
How these estimates work

NOAA HRRR through Open-Meteo supplies cloud-cover bands and temperature, relative humidity and geopotential height. The map samples a 0.6° lattice, not the native 3 km grid. The profile uses 18 pressure samples from 1000 to 200 hPa. Contiguous relative humidity ≥85% is a heuristic moist-layer proxy; boundaries are interpolated between samples. Total cover ≥20% provides broad cloud support, not proof of cloud at a particular height. Thin layers can be missed.

Height above model terrain suggests low, middle or high cloud families. A deep moist layer with CAPE ≥1000 J/kg adds a convective candidate. These are candidate families, not visual cloud identifications. Model temperatures overlapping 0 to −22°C flag your requested screening range; no liquid-water or severity field is available. Surface METARs are not used to invent cloud tops or vertical temperatures.

Non-Discretion WX · Community

Guest weather discussion

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New discussion

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Data sources, optional AWC connection & overlay method

Works without setup: METARs load from Iowa State University's Iowa Environmental Mesonet (IEM). The page labels that source honestly. If IEM is unavailable, the 12 watched stations are requested from NWS. Configure the optional JavaScript relay to prefer AWC; if the relay fails, the page falls back automatically.

Optional AWC setup: deploy the included worker.js as a Cloudflare Worker and set DEFAULT_RELAY in this HTML to its HTTPS origin for all visitors, or save it below for this browser. AWC blocks direct cross-origin browser requests. No Python, API key, or AI workflow is used by NDAWX.

Composite radar: NOAA NEXRAD base-reflectivity mosaic through IEM, the same kind of mosaic described by COD. This combines multiple radars horizontally; it is not a maximum-reflectivity-through-the-column product. Tiles use XYZ row coordinates and are pinned to the published scan timestamp. Enabled on load, checked every 5 minutes, and hidden when older than 20 minutes. No API key or relay is required. Missing coverage and no echoes can both appear transparent. The matching NEXRAD dBZ legend is shown below the map.

Gusts: station dots, popups and the watch list show reported METAR gusts in knots. “Not reported” means the report has no gust group; it does not mean zero. The selectable HRRR gust shading and map-value popup are model-only estimates, separate from observed gusts. Daily maximum gusts are never substituted for current gusts.

Wind: animated particles follow the estimated instantaneous wind field. The speed slider exaggerates movement for visibility; it is not elapsed meteorological time. Pause/play is available, animation stops in hidden tabs, and reduced-motion preferences pause it initially.

Model: NOAA HRRR via Open-Meteo, sampled on a 0.6° grid (roughly 55–67 km), with bilinear interpolation. This is not a native 3 km GRIB raster. Recent METAR minus model differences adjust temperature and sustained wind components locally within 100 km; reports older than 90 minutes are excluded. Gusts are not used to drive sustained-wind animation. No field is shown without current HRRR data.

Airspaces: live FAA GIS boundaries in the Arizona region include Class B/C/D (blue / pink / dashed blue), optional Class E (dashed purple), special-use areas (amber/orange), and special-rule areas including Grand Canyon (teal). Click a boundary for its name, floor and ceiling. Neighboring areas may extend outside Arizona. Layers are plan views at all altitudes, not a sectional chart, clearance, activation feed or complete TFR/NOTAM service. Check FAA SUA and current charts for operational use.

Refresh: METARs and radar every 5 minutes, Phoenix discussion every 10 minutes, HRRR hourly, airspace daily while open. Source failures are shown independently; previous observations retain their original timestamps. All times are Arizona MST. HRRR fields expire 90 minutes from their valid hour.