Weather Alert in Idaho
Flood Warning issued May 2 at 11:37AM MDT by NWS Pocatello ID
AREAS AFFECTED: Bannock, ID
DESCRIPTION: ...The Flood Warning continues for the following rivers in Idaho... Portneuf River at Topaz affecting Bannock County. * WHAT...Minor flooding is occurring and minor flooding is forecast. This approaches the flood of record. * WHERE...Portneuf River at Topaz. * WHEN...Until further notice. * IMPACTS...At 4.0 feet, Lowland and crop field flooding possible from Pebble Creek to Inkom. * ADDITIONAL DETAILS... - At 11:15 AM MDT Thursday the stage was 4.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:15 AM MDT Thursday was 4.3 feet. - Forecast...The river will rise to 4.2 feet this afternoon. It will then fall early Saturday morning. It will rise to 4.6 feet early Tuesday morning. It will then fall again but remain above flood stage. - Flood stage is 4.0 feet. - Flood History...This crest compares to a previous crest of 4.5 feet on 02/22/2017. - http://www.weather.gov/safety/flood
INSTRUCTION: Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov/pocatello.
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Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
