Tropical Storm Norma (1970)

Tropical Storm Norma
Tropical Storm Norma near peak intensity
Meteorological history
FormedAugust 31, 1970
DissipatedSeptember 5, 1970
Tropical storm
1-minute sustained (SSHWS/NWS)
Highest winds60 mph (95 km/h)
Lowest pressure992 mbar (hPa); 29.29 inHg
Overall effects
Fatalities23 indirect
Damage$1 million (1997 USD)
Areas affectedArizona, Utah, Colorado, New Mexico, Baja California
IBTrACSEdit this at Wikidata

Part of the 1970 Pacific hurricane season

Tropical Storm Norma was the fourteenth named tropical cyclone of the 1970 Pacific hurricane season. The storm formed off the coast of Mexico and intensified rapidly, peaking as a strong tropical storm on September 3, before starting a weakening trend. It dissipated before making landfall on Baja California.

While the storm never made landfall, the remnants from the storm fueled the Labor Day Storm of 1970, causing floods in Arizona that resulted in heavy damage and loss of life. The rainfall from this storm broke records, mostly for 24-hour rainfall totals. Despite not being tropical when the damages were done, Norma is considered to be the deadliest disaster in Arizona history.[1]

  1. ^ "…Top Arizona Hurricane/Tropical Storm Events…". United States National Weather Service Weather Forecast Office Phoenix, Arizona. Archived from the original on September 29, 2009. Retrieved January 2, 2023.