Casa de Oro-Mount Helix, CA Live Doppler Radar
Live radar for Casa de Oro-Mount Helix, San Diego County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Casa de Oro-Mount Helix?
Since 1996, the National Weather Service has logged flash flooding on 148 days in the San Diego County Inland Valleys forecast zone and San Diego County — the most common reported hazard around Casa de Oro-Mount Helix, mostly in August and January. Next come wildfires (115 days) and flooding (114 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Flash flooding | 148 | Mar 2025 | Jan 22, 2024 · 2 deaths · $100,000 damage |
| Wildfires | 115 | Jan 2025 | Oct 25, 2003 · 14 deaths · $1.0 billion damage |
| Flooding | 114 | Jan 2026 | Dec 16, 2002 · 3 deaths · $60,000 damage |
| Damaging thunderstorm winds | 73 | Feb 2026 | Mar 22, 2007 · 3 deaths |
| High winds | 62 | Jan 2025 | Jan 7, 2003 · $28 million damage |
| Excessive heat | 62 | Aug 2025 | Jun 23, 2024 · 1 death |
| Lightning casualties & damage | 38 | Dec 2023 | Sep 2, 2001 · 1 death |
| Debris flows | 24 | Aug 2024 | Apr 9, 2020 · $2.0 million damage |
Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the San Diego County Inland Valleys forecast zone and San Diego County; damage is as reported, not adjusted for inflation.
Which radars cover Casa de Oro-Mount Helix?
The closest NEXRAD Doppler radar is KNKX (San Diego, CA), about 12 miles north-northwest. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.
| Radar | Distance | Lowest beam over Casa de Oro-Mount Helix | View |
|---|---|---|---|
| KNKX San Diego, CA | 12 mi north-northwest | 600 ft | Excellent — the lowest scan sees close to the ground |
| KSOX Santa Ana Mountains, CA | 82 mi north-northwest | 7,200 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KYUX Yuma, AZ | 136 mi east | 15,500 ft | Limited — the beam overshoots the lowest part of storms |
Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.
Tornado & hail history near Casa de Oro-Mount Helix
Since 1950, NOAA has recorded 12 tornadoes within 25 miles of Casa de Oro-Mount Helix. Most came in February and March. The strongest was an F1 on April 13, 1956, which touched down about 11 miles southwest of town. The most recent was an F0 on March 11, 2006, which touched down about 23 miles north of town.
Hail: 4 reports of 1-inch or larger hail within 25 miles since 1955; the largest was 1.25-inch hail on September 2, 2003.
Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.
On TALON you get Casa de Oro-Mount Helix's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.
Casa de Oro-Mount Helix radar FAQ
Where is the nearest weather radar to Casa de Oro-Mount Helix, CA?
KNKX (San Diego, CA), about 12 miles north-northwest. KSOX (Santa Ana Mountains, CA) is 82 miles away and also covers the area.
How often does Casa de Oro-Mount Helix flood?
Since 1996 the National Weather Service has logged flash flooding on 148 days in the San Diego County Inland Valleys forecast zone and San Diego County; the deadliest was on January 22, 2024, with 2 deaths. TALON's free flash-flood risk layer shows, every 2 minutes, how close the rain that has fallen is to what it takes to flood — turn it on under Layers.
Is TALON's radar for Casa de Oro-Mount Helix free?
Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.
Should I rely on radar for my safety?
No app replaces official warnings. When the National Weather Service issues a warning for Casa de Oro-Mount Helix, follow it right away — see watch vs. warning.
Radar for nearby towns
- El Cajon, CA radar 3 mi
- La Mesa, CA radar 3 mi
- Lemon Grove, CA radar 4 mi
- Santee, CA radar 6 mi
- Chula Vista, CA radar 10 mi
- National City, CA radar 10 mi
- San Diego, CA radar 10 mi
- Coronado, CA radar 13 mi
- Poway, CA radar 16 mi
- Imperial Beach, CA radar 16 mi