Alert archive / Utah / Areal Flood Warnings in 2018
Areal Flood Warning 2, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this areal flood warning at Oct 11, 2018, 9:19 AM MDT for Garfield County, Kane County, Utah. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Oct 11, 2018, 9:19 AM MDT (15:19 UTC)
- Expired
- Oct 11, 2018, 3:15 PM MDT
- In force
- 6 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
Counties Garfield County, UT, Kane County, UT
The radar
The Cedar City radar (KICX), 105 km from the middle of the area, began a volume at 15:20 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
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 3.3 hours before the alert went out and 260 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.
- Mixed-layer CAPE
- 30 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 834 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 230 m²/s²
- 0-3 km storm-relative helicity
- 295 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Salt Lake City, UT wrote its last area forecast discussion before this areal flood warning went out at Oct 11, 3:09 AM MDT, 6 hours 10 minutes earlier.
Area forecast discussion, Oct 11, 3:09 AM MDT, 6 hours 10 minutes before
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</html>Hazardous weather outlook, Oct 11, 3:13 AM MDT, 6 hours 6 minutes before
Hazardous Weather Outlook National Weather Service Salt Lake City UT 313 AM MDT Thu Oct 11 2018 UTZ001>016-019>021-517-518-WYZ021-121100- Cache Valley/Utah Portion-Northern Wasatch Front- Salt Lake and Tooele Valleys-Southern Wasatch Front- Great Salt Lake Desert and Mountains-Wasatch Mountain Valleys- Wasatch Mountains I-80 North-Wasatch Mountains South of I-80- Western Uinta Mountains-Wasatch Plateau/Book Cliffs- Western Uinta Basin-Castle Country-San Rafael Swell- Sanpete/Sevier Valleys-West Central Utah-Southwest Utah- Utahs Dixie and Zion National Park-South Central Utah- Glen Canyon Recreation Area/Lake Powell-Central Mountains- Southern Mountains-Southwest Wyoming- 313 AM MDT Thu Oct 11 2018 This Hazardous Weather Outlook is for the western two thirds of Utah and southwest Wyoming. .DAY ONE...Today and Tonight A storm system will bring valley rain and mountain snow showers to much of the area today. The heaviest precipitation will remain focused across far southern Utah this morning, with snow levels generally at or above 8000 feet across this area. Snow showers will be possible this afternoon across northern Utah, where snow levels will generally range from 7000-7500 feet. Little if any accumulation are expected, although heavier showers could produce briefly slushy conditions along higher elevation roadways. .DAYS TWO THROUGH SEVEN...Friday through Wednesday A hard freeze is possible Sunday and Monday mornings for most valley locations outside of heavily urban areas and areas near the Arizona border. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. For more information from NOAA/s National Weather Service visit... http://weather.gov/saltlakecity For information on potential road travel impacts visit... http://www.udottraffic.utah.gov/roadweatherforecast.aspx
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 11, 10:36 AM MDT | Flash Flood Warning | SLC | Kane, Washington | 4 hr |
Nearby
Areal Flood Warnings in Utah, 2018Every areal flood warning in 2018
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.