Alert archive / Idaho / Special Weather Statements in 2019

Special Weather Statement, NWS Pocatello, ID

July 8, 2019Madison County, Idaho

NWS Pocatello, ID issued this special weather statement at Jul 8, 2019, 1:08 PM MDT for Madison County, Idaho. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 8, 2019, 1:08 PM MDT (19:08 UTC)
Expired
Jul 8, 2019, 1:45 PM MDT
In force
37 min
Issued by
NWS Pocatello, ID

County Madison County, ID

The radar

The Pocatello radar (KSFX), 113 km from the middle of the area, began a volume at 19:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 7.1 hours before the alert went out and 301 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Riverton, WY at 12:00Z on 2019-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2019-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3185 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pocatello, ID wrote its last area forecast discussion before this special weather statement went out at Jul 8, 3:01 AM MDT, 10 hours 7 minutes earlier.

Area forecast discussion, Jul 8, 3:01 AM MDT, 10 hours 7 minutes before
Area Forecast Discussion
National Weather Service Pocatello ID
301 AM MDT Mon Jul 8 2019

.DISCUSSION...A cold front remains on track to pass through Southeast
Idaho today, allowing for a cooler, cloudy day. Better chances
for precipitation are forecast today, particularly late this
morning through early this evening. Showers and thunderstorms will
track through the Central Mountains and Eastern Magic Valley
areas this morning with isolated thunderstorms possible in Eastern
Idaho this morning; then track to the east/northeast. Rainfall
amounts have not changed much from yesterdays forecast; although
there is increased amounts of QPF noted in the Arco Desert and the
Southern Highlands with continued good agreement in forecast
models in the Island Park/Driggs area of around one-quarter inch
of rain in these areas (and the potential for higher amounts in
stronger cells). QPF during this event may reach one- half inch in
some of these areas. PW across our area is elevated in the 0.7 to
0.9 inch range (in the 90+% of normal range for us), which may
lead to heavy rain in some thunderstorms and thus the potential
for flooding. It is definitely is something to monitor should the
stronger storms reach urban areas today. Small hail and gusty
winds will be possible in any thunderstorms today as well.
Activity is expected to generally improve near sunset though some
showers and thunderstorms may continue through the overnight
hours; therefore we have kept a mention of isolated thunderstorms
in the forecast.

Tuesday will be a transition day between low pressure exiting to
the northeast and high pressure building in from the south.
Gradual increases to temperatures are forecast Tuesday with much
warmer temperatures expected in the middle portion of the week.
Look for mid 90 degree temperatures, little chance for precip and
drying conditions. NP

.AVIATION...
Will have generally widespread VFR conditions today with the main
impact being mainly afternoon shower and thunderstorm
development. For now have vicinity thunder at all TAF sites after
19z through 04z this evening. Any site could see a thunderstorm or
rain shower this afternoon with lower ceilings but even those
should stay VFR. Expect no shower or thunderstorm activity on
Tuesday. GK

&&

.FIRE WEATHER...
Main impact today will be afternoon thunderstorm development. Have
a red flag warning in effect for zones 425 and 410 for scattered
thunderstorms. Will have the storms in all zones but fuels still
are not critical in those zones so have limited the red flag for
only the two zones. It will be much cooler today with minimum
humidities expected to remain well above 20 percent in all zones.
Will begin a rapid warming trend Tuesday with dry conditions
expected both Tuesday and Wednesday. Minimum humidity will drop to
the 15 to 25 percent range Tuesday with many regions in the 10 to
20 percent range on Wednesday as low level high temperatures reach
the 90s in many locations. Could see isolated thunderstorms return
Thursday and Friday mainly in zones 475 and 476. Expecting
strongest winds today in zone 425 where gusts may increase to the
20 to 25 mph range late this afternoon. GK

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning from 2 PM this afternoon to 9 PM MDT this
evening for IDZ410-425.

&&

In the hours before

Special weather statement, Jul 8, 11:53 AM MDT, 1 hour 15 minutes before
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Special weather statement, Jul 8, 1:08 PM MDT, 0 minutes before
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The office that day

Everything else NWS Pocatello, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 8, 3:04 AM MDTRed Flag WarningPIHBingham, Blaine, Bonneville, Butte, Clark, Fremont and 7 more18 hr
Jul 8, 11:53 AM MDTSpecial Weather StatementPIHBonneville52 min
Jul 8, 2:08 PM MDTSpecial Weather StatementPIHFranklin52 min
Jul 8, 2:48 PM MDTSpecial Weather StatementPIHFranklin42 min
Jul 8, 3:33 PM MDTSpecial Weather StatementPIHBear Lake, Franklin57 min
Jul 8, 4:25 PM MDTSpecial Weather StatementPIHBear Lake50 min
Jul 8, 5:10 PM MDTSpecial Weather StatementPIHButte50 min
Jul 8, 5:47 PM MDTSpecial Weather StatementPIHCuster43 min

Nearby

Special Weather Statements in Idaho, 2019Every special weather statement in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.