March Air Reserve Base

KRIV / RIV

Riverside, US

Last Updated
May 15, 03:55Z

Current Weather

Display Units
Recent 38 min ago
03:55Z

🌙 Night
VFR
Flight Rules
18°C
Temperature
Dewpoint: 11°C
7 kt
310°
10 SM
Visibility
Ceiling
Unlimited
1014 hPa
QNH
Altimeter Setting

Raw METAR

METAR KRIV 150355Z AUTO 31007KT 10SM CLR 18/11 A2995 RMK AO2 SLP135 T01830106

Weather Briefing

VFR

March Air Reserve Base is currently reporting visual flight rules (VFR) conditions with clear skies and 10 SM visibility.

Wind Analysis

Winds are from the northwest (310°) at 7 knots. Runway 30 is favored with a 7-knot headwind and 1-knot crosswind component.

Visibility & Ceiling

Visibility is 10 SM. Skies are clear with unlimited ceiling.

Temperature & Moisture

Temperature is 18°C (64°F) with a dewpoint of 11°C, indicating moderate moisture conditions.

Forecast Outlook

The TAF forecast covers the next 30 hours. The forecast shows a transition between VFR and IFR conditions. Pilots should monitor the forecast closely and have an alternate airport plan. Expected weather includes: Mist. Temporary VFR conditions are forecast between 22:00Z and 01:00Z.

Pilot Recommendations

Conditions are favorable for visual flight. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1014 hPa
Sea Level Pressure
For altitude above MSL
QFE
963 hPa
Field Pressure
Height above aerodrome (1,536 ft)
Pressure Alt
1,514 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 2,243 ft
ISA Deviation: +6.1°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KRIV 150402Z 1504/1610 32006KT 9999 SKC QNH2994INS BECMG 1509/1510 VRB04KT 9000 BR FEW005 QNH2993INS BECMG 1511/1512 15004KT 4800 BR BKN005 QNH2995INS BECMG 1514/1515 15004KT 8000 BR BKN008 QNH2998INS BECMG 1515/1516 15004KT 9999 NSW BKN015 QNH2997INS BECMG 1516/1517 15004KT 9999 FEW020 QNH2994INS BECMG 1519/1520 32009KT 9999 FEW040 510005 QNH2986INS TEMPO 1522/1601 32012G20KT BECMG 1604/1605 31006KT 9999 SKC QNH2988INS BECMG 1608/1609 VRB04KT 4800 BR BKN005 QNH2988INS TX26/1522Z TN10/1513Z
Upcoming Changes (Next 12 Hours)
04:32Z BASE
+0h
VFR 320° 6 kt
Visibility: 10+ km
09:00Z BECMG
+5h
VFR VRB 4 kt
Visibility: 9 km
Mist
11:00Z BECMG
+7h
IFR 150° 4 kt
Visibility: 4.8 km
Ceiling: 500 ft
Mist
14:00Z BECMG
+10h
IFR 150° 4 kt
Visibility: 8 km
Ceiling: 800 ft
Mist

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
RIV
12
30 ✈️
14
32 ✈️

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 12/30
Active: 30
3,010 ft 100 ft ASP 135°
6.9 kt 1.2 kt
10° angle
✈️ 14/32
Active: 32
13,300 ft 200 ft CON 149°
6.9 kt 1.2 kt
10° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KRIV

6,603 observations | Sep 2025 - May 2026

Flight Rules Distribution

VFR
81.8%
MVFR
12.3%
IFR
3.6%
LIFR
2.3%

March Air Reserve Base enjoys predominantly VFR conditions, with visual flight rules prevailing 81.8% of the time. Prevailing winds are from the NW averaging 6.3 knots. Calm conditions occur 43.2% of the time. Temperature extremes range from -1°C to 37°C, reflecting significant seasonal variation. The best months for VFR flying are March, April, October.

Wind Analysis

Prevailing Direction: NW (315°)
Average Speed: 6.3 kt
Maximum Recorded: 29 kt
Calm Winds: 43.2%
Direction Distribution:
N
6.1%
NE
2.4%
E
5.4%
SE
9.9%
S
7.6%
SW
1%
W
5.9%
NW
18.5%

Temperature Range

Average: 15.8°C
Range: -1°C to 37°C
-1°C 37°C

Visibility

Average: 9.5 SM
Below 3 SM: 1%
Fog Frequency: 1.9%

Best Months for VFR

March April October

Runway Wind Analysis

Runway 12/30
Favorable wind: 100%
Avg crosswind: 2.7 kt
Runway 14/32
Favorable wind: 100%
Avg crosswind: 2.4 kt

Statistics computed from 6,603 METAR observations (Sep 2025 - May 2026). Data sourced from official aviation weather services. Updated daily.

March Air Reserve Base - Airport Information

Airport Details

ICAO Code: KRIV
IATA Code: RIV
Type: medium airport
Status: active
Elevation: 1,536 ft MSL

Location

City: Riverside
Country: US
Latitude: 33.880699°
Longitude: -117.259003°
Time Zone: Etc/GMT+8

Runway Information

Runway 12/30
Length: 3,010 ft
Width: 100 ft
Surface: ASP
ILS: No
Runway 14/32
Length: 13,300 ft
Width: 200 ft
Surface: CON
ILS: No

About March Air Reserve Base

Overview

March Air Reserve Base (KRIV) is a medium airport located in Riverside, California, serving as an important military aviation facility. Situated at an elevation of 1,536 feet MSL with coordinates 33.880699, -117.259003, the base supports air reserve operations with two significant runways. Its strategic location in Southern California provides a critical infrastructure for military aviation activities.

Flying Conditions

The airport experiences predominantly VFR conditions, with 78.9% of observations indicating clear flying weather. Temperature ranges from 2°C to 37°C, creating moderate climate variability for pilots. Wind patterns are consistently from the northwest at an average of 6.1 knots, with calm conditions occurring 44.6% of the time. October, November, and December represent the most favorable VFR months for aviation operations.

Notable Features

March Air Reserve Base features two runways: a 3,010-foot asphalt runway (12/30) and a substantial 13,300-foot concrete runway (14/32). Both runways demonstrate excellent wind alignment, with 100% favorable wind conditions and minimal average crosswind (2.7kt and 2.4kt respectively). The airport's elevation and geographic positioning contribute to generally stable atmospheric conditions.

Approach Considerations

Pilots can expect consistent visibility averaging 9.4 statute miles, with infrequent low visibility events (below 3SM occurring only 1.2% of observations). The northwest prevailing winds suggest potential preference for runways aligned in that directional quadrant. Careful attention should be paid during the rare instances of reduced visibility, which occur in approximately 2.3% of observations.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.