-- °F

FEELS_LIKE: --° | RANGE: --° / --°

CONNECTING...

BFT: 0 CALM

WET_BULB: --°

SOLAR_NOON: --:--

WIND_VECTOR

-- MPH --° [CALM]

PEAK_GUST: --

BAROMETER

-- inHg

Δ3h: --

HUMID_DEW

--% RH

DEWPOINT: --°

UV_INDEX -- [LOW]

VISIBILITY -- MI

CLOUD_COVER --%

PRECIP_TODAY 0.00"

> HOURLY PROJECTION // NEXT 6 HOURS TEMP • POP • WIND

> 7-DAY SYNOPTIC LOG TEMP_RANGE [MIN··MAX]

WEEK_EXTREMES --° / --°

RAIN_DAYS -- DAYS

PEAK_GUST -- MPH

> ATMOSPHERIC PARTICULATE & POLLEN MATRIX DOMINANT: PM2.5

US_AQI

--

GOOD

PM2.5

--

μg/m³

PM10

--

μg/m³

O3 -- ppb

NO2 -- ppb

SO2 -- ppb

CO -- ppb

> BIO-AEROSOL POLLEN CONCENTRATION

TREE POLLEN: LOW [14 gr/m³]

GRASS POLLEN: MODERATE [32 gr/m³]

RAGWEED / WEED: LOW [4 gr/m³]

MOLD SPORES: LOW [2,400 sp/m³]

> INVERSION & DISPERSION METRICS

VENTILATION IDX: GOOD [4,800 m²/s]

SMOKE AOD (550nm): 0.08 [CLEAR]

BOUNDARY LAYER: 1,420 M AGL

INVERSION RISK: NONE DETECTED

> CARDIOPULMONARY & SENSITIVE GROUP DISPATCH

GENERAL POPULATION: AIR QUALITY IS SATISFACTORY // NORMAL OUTDOOR ACTIVITIES

RESPIRATORY / ASTHMA: NOMINAL RISK PEDIATRIC / SENIORS: LOW CONCERN

> NWS SYNOPTIC HAZARDS & TELETYPE FEED NWS RADAR: ACTIVE

> LIVE SYNOPTIC METAR OBSERVATION

KROA 240815Z 14006KT 10SM CLR 18/09 A3002 RMK AO2 SLP164

// NO ACTIVE WARNINGS OR ADVISORIES //

Regional alerts system reports nominal baseline conditions for the active synoptic grid cell. No severe convective storm warnings or flash flood watches are in effect.

> CONVECTIVE THREAT MATRIX

THUNDER PROB:<10% [NOMINAL]

FLASH FLOOD:LOW RISK

HIGH WIND:< 25 KTS

TORNADIC POTENTIAL:NONE DETECTED

HAIL RISK:< 0.25 INCH

> AVIATION & SKYWARN STATUS

SKYWARN STATUS:STANDBY // NOMINAL

SIGMET / AIRMET:NO ACTIVE HAZARDS

FLIGHT CATEGORY:VFR (CEIL > 3,000)

TURBULENCE:LIGHT / NONE

ICING LEVEL:> 11,500 FT MSL

> SYNOPTIC BAROMETER // 48H OSCILLOSCOPE BASE: 29.92 inHg

-48 HOURS SEA LEVEL DATUM (1013.25 hPa) CURRENT (0h)

ZAMBRETTI ALGORITHM

SETTLED FINE // CLEAR SKY

COMPUTED VIA RAPID BARO + VECTOR

WMO TENDENCY: CODE 2 [STEADY +0.4]

ALTIMETER / DENSITY ALT

QNH: 29.94 inHg

DENSITY ALT: 1,140 FT

AIR DENSITY (ρ): 1.218 kg/m³ [99.4%]

> THERMODYNAMIC GAS & VAPOR PROPERTIES

SAT VAPOR (es) 20.4 hPa

ACT VAPOR (e) 11.0 hPa

VIRTUAL TEMP 66.2°F

H2O BOIL POINT 211.6°F

> CELESTIAL EPHEMERIS & LUNAR MECHANICS SYNODIC: 29.53d

SUNRISE

--:--

DAWN: --:--

WAXING CRESCENT

42% LIT

SUNSET

--:--

GOLD: --:--

ASTRONOMICAL DAWN 05:18 AM

SOLAR_NOON 13:02 PM

ASTRONOMICAL DUSK 20:41 PM

DAY_LENGTH 12h 24m

SUN_AZIMUTH / ALT 184° / +56.2°

NEXT_FULL_MOON IN 8 DAYS

> STARGAZING QUALITY & SEEING CONDITIONS BORTLE CLASS 4 // TRANSPARENCY: GOOD

VENUS: DUSK W

JUPITER: HIGH S

MARS: 02:15 AM

SATURN: MIDNIGHT

> BIOMETRIC & LIFESTYLE INDEX DISPATCH COMFORT: 88/100

FITNESS / RUN:8/10 [IDEAL]

CAR WASH:48H DRY

LAUNDRY DRY:~2.2 HRS

JOINT / MIGRAINE:LOW RISK

PEST / MOSQUITO:DORMANT

FIRE DANGER:MODERATE

CANINE PAW HEAT:SAFE [<85°F]

PLANT FROST/HEAT:NOMINAL

HVAC DEGREE DAYS:HDD: 2 // CDD: 0

SOLAR PV YIELD:94% OPTIMAL

RECOMMENDED ATTIRE: LIGHT LAYERS / SHIRT

SOLAR BURN TIME: ~35 MIN

STANDBY // CHRONO_TERMINAL 2026-09-24

--:--:--

ROANOKE, VA // --°F // CALM

SEPTEMBER 2026 DOY: 267 // WEEK 39

SUMOTU WETHFR SA

DIURNAL PROGRESSION: [██████░░░░] 64%

ANNUAL PROGRESSION: [███████░░░] 73%

> REGIONAL RF DIRECTORY // HAM • GMRS • NOAA • ARES GRID: EM97 // CALL: W4CA

> NOAA ALL-HAZARDS BROADCAST (NWR) [ONLINE // 1050 Hz RX OK]

TRANSMITTER WXL60

FREQUENCY 162.475 MHz

SITE / ERP POOR MTN (1 kW)

SAME FIPS 051770 / 051161

> AMATEUR RADIO (HAM) REPEATERS & ARES / SKYWARN OFFSET • CTCSS TONE • MODE

W4CA [ROANOKE VLY] VHF 2-METER

OUTPUT / INPUT:146.985 -0.600 MHz

PL / CTCSS TONE:107.2 Hz (ENC/DEC)

ROLE / AFFIL:NWS SKYWARN NET

ELEVATION / COVER:3,960 FT MSL // REGIONAL

W4CA [UHF/DIGITAL] UHF 70-CM

OUTPUT / INPUT:444.900 +5.000 MHz

ACCESS / MODE:PL 107.2 Hz / DMR

ROLE / LINK:WIDE-AREA LINKED

ELEVATION / COVER:3,960 FT // 50+ MI

2M NAT CALLING 146.520 FM

70CM NAT CALL 446.000 FM

APRS PACKET 144.390 MHz

6M CALLING 52.525 FM

> GMRS / FRS TACTICAL & COMMUNITY REPEATERS 462 / 467 MHz UHF BANDS

PRIMARY REPEATER

462.675 / 467.675

TONE: 141.3 Hz [TRAVEL]

ROANOKE RIDGE HIGH-SITE

EMERGENCY / CALLING

CH 20 [462.675]

CH 16 [462.575] 4X4

NATL TRAVELER ASSIST

MURS / CB MONITOR

MURS 3: 151.940

CB CH 9 / 19 [27M]

HIGHWAY ROAD REPORT

> AVIATION CTAF/ATIS & INTEROP MONITORS ROA TOWER: 118.80 MHz

ATIS/AWOS: 119.45 MHz

CTAF / TOWER: 118.80 MHz

VHF GUARD: 121.500 MHz

SAR INTEROP: 155.160 MHz

NET PROTOCOL: MON 20:00 LOCAL // SKYWARN & ARES EMERGENCY NET ON 146.985

FCC PART 97 / 95

> SWPC // GEOMAGNETIC & IONOSPHERIC TELEMETRY CYCLE 25 // ACTIVE

PLANETARY_Kp

2.3

QUIET (G0)

SOLAR_WIND

425

KM/SEC

IMF_Bz_VECTOR

+1.8

nT (NORTH)

AURORA_VIEWLINE_LATITUDE: LAT > 58.2°N

F10.7cm RADIO_FLUX: 168.4 SFU

SUNSPOT_NUMBER (SSN): 148 [ELEVATED]

SOLAR WIND DENSITY: 4.8 protons/cm³

> NOAA SPACE WEATHER ACTIVITY SCALES

G-SCALE: G0 [QUIET]

S-SCALE: S0 [NOMINAL]

R-SCALE: R0 [NONE]

> HF SHORTWAVE PROPAGATION MATRIX

80M: GOOD

40M: FAIR

20M: OPTIMAL

15M: OPEN

10M: FAIR

VHF: LOS

> THERMODYNAMIC SOUNDING // RAOB DUMP CYCLE: 00Z/12Z SYNOPTIC

CAPE:220 J/KG

LIFTED_INDEX:+2.6°C [STABLE]

CIN (INHIBIT):-55 J/KG

0-6KM SHEAR:26 KTS

0-3KM HELICITY (SRH):48 m²/s²

PWAT (H2O):0.86 IN

FREEZING_LVL:9,600 FT

WET_BULB_ZERO:8,200 FT

K-INDEX:18 [LOW]

SWEAT INDEX:142 [LOW]

> VERTICAL PROFILE (hPa / ALT / TEMP / WIND)

> KINEMATIC THREAT THRESHOLDS

SUPERCELL (SCP): 0.1 [NONE]

TORNADO (STP): 0.0 [ZERO]

LCL HEIGHT: 3,400 FT

EL (EQUILIBRIUM): FL290

> HYDRO_MONITOR // TIDAL HARMONICS & STREAMFLOW BASIN: REGIONAL

<TIDAL_HARMONIC_STATE>

WATER_LEVEL:+1.4 FT MLLW

CURRENT_TREND:EBBING [FALLING]

CYCLE_TYPE:SEMI-DIURNAL

NEXT HIGH TIDE:14:22 EST

<STREAMFLOW_STAGE>

DISCHARGE:NOMINAL FLOW

FLOOD_STATUS:NO FLOOD

WATER_TEMP:64°F

USGS PERCENTILE:58th [NORMAL]

WATERSHED RUNOFF SATURATION: [██░░░░░░░░] 22% LOW

> SOIL MOISTURE PROFILE & DROUGHT STATUS

SURFACE (0-10cm): 28% m³/m³

ROOT ZONE (10-40cm): 31% m³/m³

DEEP (40-100cm): 34% m³/m³

US DROUGHT MONITOR: NONE (NORMAL) ESTUARY SALINITY: 14.2 PSU