Airports · Corona Municipal · flight planning · Mon 2:01 pm PDT (21:01 UTC)

Flight planning: Corona Municipal AJO / KAJO

What a pilot looks at before a flight from or to Corona Municipal in Corona, California, in plain English: right now VFR: good flying weather, Wind from the northwest (320°) at 7 knots. The warnings, reports and winds below come from the government's aviation weather service and the restrictions from the FAA, refreshed every few minutes. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools.

the observation as issued, and in English

METAR KAJO 122056Z AUTO 32007KT 10SM FEW029 BKN036 OVC047 17/13 A2990 RMK AO2 RAB31E42 SLP120 P0000 60000 T01720128 58010

METAR: a routine hourly observation
KAJO: the station, KAJO
122056Z: observed 1:56 pm PDT (20:56 UTC)
AUTO: fully automated report, nobody checked it
32007KT: wind from the northwest at 7 knots
10SM: visibility 10 miles
FEW029: a few clouds at 2,900 feet
BKN036: a broken layer at 3,600 feet
OVC047: overcast at 4,700 feet
17/13: temperature 17 °C (63 °F), dew point 13 °C (55 °F)
A2990: altimeter setting 29.90 inches of mercury
RMK: remarks follow
AO2: automated station with a precipitation sensor
RAB31E42: rain began 31 minutes past the hour, ended 42 minutes past the hour
SLP120: sea-level pressure 1012.0 hPa
P0000: a trace of precipitation in the last hour
60000: a trace of precipitation in the last three or six hours
T01720128: temperature 17.2 °C (63 °F), dew point 12.8 °C (55 °F)
58010: pressure in the last three hours falling, faster lately, change 1.0 hPa

Warnings in force SIGMETs and AIRMETs whose area covers this field

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft.
AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist).

Turbulence AIRMET in force: moderate turbulence from 18,000 ft to 39,000 ft; AIRMET in force: moderate turbulence (due to mountain wave) up to 10,000 ft. 4 pilot reports of turbulence within 100 nautical miles in the last three hours: moderate chop turbulence, at 27,000 ft, 26 nm north, 11:25 am PDT (18:25 UTC); moderate turbulence, at descending, 27 nm northeast, 1:00 pm PDT (20:00 UTC). The government's turbulence forecast map ↗

Icing No icing warning in force over this field. No pilot has reported icing within 100 nautical miles in the last three hours. The freezing level is about 8,000 ft (from the winds-aloft temperatures), so icing is possible in cloud above that. The government's icing forecast map ↗

A SIGMET warns of weather hazardous to all aircraft (thunderstorms, severe turbulence or icing, volcanic ash); an AIRMET of weather that matters to small aircraft and to flying without instruments (moderate turbulence or icing, low cloud, strong surface wind, mountains hidden in cloud). An area is counted when it covers this field's position.

Pilot reports within 100 nautical miles, last three hours, nearest first

urgent B737 descending, 42 nm northwest, 1:47 pm PDT (20:47 UTC): remarks: low-level wind shear a 10-knot gain of airspeed knots during the descent runway 8.
as filed, and in English
```
BUR UUA /OV BUR/TM 2047/FL000/TP B737/RM LLWS +10 KT DURD RY 8
```
Report
an urgent report filed through BUR
Where
over BUR
Time
20:47 UTC
Height
at 0 ft
Aircraft
B737
Remarks
low-level wind shear a 10-knot gain of airspeed knots during the descent runway 8
C172 at 4,000 ft, 6 nm north, 11:55 am PDT (18:55 UTC): a routine report with nothing remarked on.
as filed, and in English
```
ONT UA /OV ONT160004/TM 1855/FL40/TP C172/SK B-030
```
Report
a routine report filed through ONT
Where
4 nm south (160°) of ONT
Time
18:55 UTC
Height
at 4,000 ft
Aircraft
C172
Sky
B-030
B738 at 3,500 ft, 10 nm north, 1:57 pm PDT (20:57 UTC): a broken layer above 3,500 ft, remarks: during the descent runway 26R.
as filed, and in English
```
ONT UA /OV 078009/TM 2057/FL035/TP B738/SK BKN035-TOPUNKN/RM DURD RWY 26R
```
Report
a routine report filed through ONT
Where
wind from 078° at 9 knots
Time
20:57 UTC
Height
at 3,500 ft
Aircraft
B738
Sky
a broken layer from 3,500 ft, tops unknown
Remarks
during the descent runway 26R
B738 at 3,000 ft, 10 nm north, 11:08 am PDT (18:08 UTC): remarks: BASE030.
as filed, and in English
```
ONT UA /OV 270004/TM 1808/FL030/TP B738/RM BASE030
```
Report
a routine report filed through ONT
Where
wind from 270° at 4 knots
Time
18:08 UTC
Height
at 3,000 ft
Aircraft
B738
Remarks
BASE030
E545 at 3,000 ft, 11 nm northeast, 11:16 am PDT (18:16 UTC): remarks: BASE030.
as filed, and in English
```
ONT UA /OV ONT080005/TM 1816/FL030/TP E545/RM BASE030
```
Report
a routine report filed through ONT
Where
5 nm east (080°) of ONT
Time
18:16 UTC
Height
at 3,000 ft
Aircraft
E545
Remarks
BASE030
UAL2113 at 27,000 ft, 26 nm north, 11:25 am PDT (18:25 UTC): moderate chop turbulence.
as filed, and in English
```
ARP UAL2113 3420N 11741W 1825 F270 TB MOD CHOP IC
```
Report
a routine report filed through ARP
B772 descending, 27 nm northeast, 1:03 pm PDT (20:03 UTC): remarks: descending out O 80 when reported.
as filed, and in English
```
ONT UA /OV ONT034020/TM 2003/FLDURD/TP B772/TB CONTINUOUS CHOP/RM DESCENDING OUT O 80 WHEN REPORTED
```
Report
a routine report filed through ONT
Where
20 nm northeast (034°) of ONT
Time
20:03 UTC
Height
during the descent
Aircraft
B772
Turbulence
continuous chop
Remarks
descending out O 80 when reported
B772 at 8,000 ft, 27 nm northeast, 1:03 pm PDT (20:03 UTC): remarks: during the descent cor sa-id and altitude and turbulence zla cwsu.
as filed, and in English
```
SBD UA /OV ONT034020/TM 2003/FL080/TP B772/TB CONS UNKN CHOP/RM DURD. COR SA-ID AND ALT AND TURB. ZLA CWSU
```
Report
a routine report filed through SBD
Where
20 nm northeast (034°) of ONT
Time
20:03 UTC
Height
at 8,000 ft
Aircraft
B772
Turbulence
continuous unknown chop
Remarks
during the descent cor sa-id and altitude and turbulence zla cwsu
C510 descending, 27 nm northeast, 1:00 pm PDT (20:00 UTC): moderate turbulence, remarks: descending out of 90 was occasional, descending out of at 7,500 ft continuous moderate.
as filed, and in English
```
ONT UA /OV ONT025019/TM 2000/FLDURD/TP C510/TB OCNL MOD TURB/RM DESCENDING OUT OF 90 WAS OCNL, DESCENDING OUT OF 075 CONTINUOUS MODERATE
```
Report
a routine report filed through ONT
Where
19 nm northeast (025°) of ONT
Time
20:00 UTC
Height
during the descent
Aircraft
C510
Turbulence
occasional moderate turbulence
Remarks
descending out of 90 was occasional, descending out of at 7,500 ft continuous moderate
C510 at 7,500 ft, 27 nm northeast, 1:00 pm PDT (20:00 UTC): moderate turbulence above 9,000 ft, remarks: during the descent cor sa-id and altitude and turbulence zla cwsu.
as filed, and in English
```
SBD UA /OV ONT025019/TM 2000/FL075/TP C510/TB OCNL MOD 090 / CONS MOD 075/RM DURD. COR SA-ID AND ALT AND TURB. ZLA CWSU
```
Report
a routine report filed through SBD
Where
19 nm northeast (025°) of ONT
Time
20:00 UTC
Height
at 7,500 ft
Aircraft
C510
Turbulence
occasional moderate at 9,000 ft continuous moderate at 7,500 ft
Remarks
during the descent cor sa-id and altitude and turbulence zla cwsu
B737 at 5,000 ft, 33 nm southwest, 11:25 am PDT (18:25 UTC): light chop turbulence, rain.
as filed, and in English
```
SNA UA /OV SNA240015/TM 1825/FL050/TP B737/WX RA/TB LGT CHOP
```
Report
a routine report filed through SNA
Where
15 nm southwest (240°) of SNA
Time
18:25 UTC
Height
at 5,000 ft
Aircraft
B737
Weather
rain
Turbulence
light chop
P06T at 1,100 ft, 34 nm west, 1:32 pm PDT (20:32 UTC): a broken layer above 2,100 ft.
as filed, and in English
```
TOA UA /OV 3 E TOA/TM 2032/FL011/TP P06T/SK BKN021
```
Report
a routine report filed through TOA
Where
3 east toa
Time
20:32 UTC
Height
at 1,100 ft
Aircraft
P06T
Sky
a broken layer from 2,100 ft

What pilots in the air told air traffic control or Flight Service: turbulence, icing, cloud tops and bases, temperature, wind, and whatever they remarked on (wind shear on final, a smooth ride). An urgent report is one of severe turbulence or icing, wind shear, or similar. Open "as filed, and in English" for the coded report and its translation line by line.

Winds and temperatures aloft forecast point ONT, 10 nm north of the field · for use 20:00–03:00 UTC

Height	Wind from	Speed	Temperature
3,000 ft	220° (southwest)	5 knots
6,000 ft	230° (southwest)	12 knots	3 °C
9,000 ft	260° (west)	17 knots	-1 °C
12,000 ft	260° (west)	21 knots	-2 °C
18,000 ft	330° (northwest)	34 knots	-9 °C
24,000 ft	290° (west)	31 knots	-23 °C
30,000 ft	250° (west)	38 knots	-37 °C
34,000 ft	230° (southwest)	63 knots	-40 °C
39,000 ft	220° (southwest)	82 knots	-44 °C

Based on data from the 12th at 18:00 UTC; valid on the 13th at 00:00 UTC for use 20:00 to 03:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; the lowest rows are left out where the ground is already that high.

Temporary flight restrictions within 50 nautical miles, from the FAA's list

4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 14 nm west · security · ZLA

Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (a closed runway, lights out, a crane) are not shown here: the FAA's notice search is not open to sites like this one at this time, and the application for the FAA's data feed is in hand.

Radar and forecast charts government pictures, the latest each time the page loads

Radar now: KSOX (5 nautical miles away) · loop National Weather Service

Radar, the Pacific Southwest · loop National Weather Service

Aviation forecast, clouds and visibility, the Southwest, 3 hours ahead · on the government's site ↗ Aviation Weather Center (NOAA) · cloud cover and bases, visibility, and the areas of low cloud or poor visibility

Aviation forecast, surface weather, the Southwest, 3 hours ahead · on the government's site ↗ Aviation Weather Center (NOAA) · surface winds, weather, thunderstorms, and the AIRMET boxes for turbulence, icing and strong winds

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

The radar pictures come from the National Weather Service (the nearest radar, then the region); the aviation forecast charts from the Aviation Weather Center's Graphical Forecasts for Aviation (clouds and visibility; surface wind, weather and thunderstorms with the AIRMET boxes); the surface analysis and the 12- and 24-hour forecast charts from the Weather Prediction Center. They are public-domain government images shown as they are published. The turbulence and icing forecasts are drawn live on the Aviation Weather Center's site: turbulence ↗ · icing ↗.

Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft), the National Weather Service radar, the Weather Prediction Center's charts, and the FAA's temporary flight restriction list and shapes. Fetched when the page is viewed and kept a few minutes. Back to Corona Municipal, where the current observation and the forecast for the field are.