Alert archive / Utah / Flash Flood Warnings in 2015
Flash Flood Warning 64, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Sep 15, 2015, 3:42 PM MDT for Kane County, Washington County, Utah. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 15, 2015, 3:42 PM MDT (21:42 UTC)
- Expired
- Sep 15, 2015, 7:45 PM MDT
- In force
- 4 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kane County, UT, Washington County, UT
The radar
The Cedar City radar (KICX), 34 km from the middle of the area, began a volume at 21:43 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
Las Vegas, NV (KVEF), launched 12:00Z, 9.7 hours before the alert went out and 251 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1939 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
631
WGUS55 KSLC 152142
FFWSLC
UTC025-053-160145-
/O.NEW.KSLC.FF.W.0064.150915T2142Z-150916T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
342 PM MDT TUE SEP 15 2015
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WEST CENTRAL KANE COUNTY IN UTAH...
EAST CENTRAL WASHINGTON COUNTY IN UTAH...
* UNTIL 745 PM MDT
* AT 340 PM MDT...LIGHT TO MODERATE RAINFALL IS MOVING INTO ZION
NATIONAL PARK. THIS AREA HAS EXPERIENCED COPIOUS AMOUNTS OF
RAINFALL IN THE PAST 24 HOURS AND CONDITIONS ARE SATURATED.
* ADDITIONALLY...RIVERS AND STREAMS THROUGHOUT THE PARK ARE
ELEVATED. IT IS INFERRED THAT THE ADDITIONAL RAINFALL WILL SWELL
THESE WATERWAYS TO DANGEROUS LEVELS.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ZION NATIONAL PARK...SPRINGDALE AND ROCKVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
&&
LAT...LON 3740 11288 3718 11280 3715 11311 3734 11317
$$
MCINERNEY2 follow-up statements
035 WGUS75 KSLC 152311 FFSSLC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 511 PM MDT TUE SEP 15 2015 UTC025-053-160145- /O.CON.KSLC.FF.W.0064.000000T0000Z-150916T0145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KANE UT-WASHINGTON UT- 511 PM MDT TUE SEP 15 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR WEST CENTRAL KANE AND EAST CENTRAL WASHINGTON COUNTIES... AT 508 PM MDT...LIGHT TO MODERATE RAINFALL CONTINUES TO FALL OVER ZION NATIONAL PARK. AS A RESULT...FLASH FLOODING CONTINUES ON THE EAST SIDE OF THE PARK. WATERFALLS ARE OCCURRING AND SLOT CANYONS CONTINUE TO FLOW. ADDITIONAL RAINFALL IS FORECAST FOR THIS AREA THROUGH THE LATE AFTERNOON HOURS. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... ZION NATIONAL PARK...SPRINGDALE AND ROCKVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE TRAVELING THROUGH ZION NATIONAL PARK...PLEASE BE AWARE OF HIGH FLOWS IN THE AREA. && LAT...LON 3740 11288 3718 11280 3715 11311 3734 11317 $$ MCINERNEY
332 WGUS75 KSLC 160138 FFSSLC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 738 PM MDT TUE SEP 15 2015 UTC025-053-160146- /O.EXP.KSLC.FF.W.0064.000000T0000Z-150916T0145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KANE UT-WASHINGTON UT- 738 PM MDT TUE SEP 15 2015 ...THE FLASH FLOOD WARNING FOR WEST CENTRAL KANE AND EAST CENTRAL WASHINGTON COUNTIES WILL EXPIRE AT 745 PM MDT... RUNOFF FROM EARLIER PRECIPITATION HAS DIMINISHED GREATLY AND RIVER AND STREAM LEVELS HAVE DECREASED IN AND AROUND ZION NATIONAL PARK. ADDITIONAL LIGHT SHOWERS ARE EXPECTED THROUGH THIS EVENING BUT THE THREAT OF ADDITIONAL FLASH FLOODING HAS ENDED. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE. MONITOR NOAA WEATHER RADIO OR LOCAL TELEVISION OR RADIO FOR THE LATEST WEATHER INFORMATION. LAT...LON 3740 11288 3718 11280 3715 11311 3734 11317 $$ PW
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 7:48 AM MDT | Flash Flood Warning | SLC | Garfield, Kane | 7 hr |
| Sep 15, 8:03 AM MDT | Flash Flood Warning | SLC | Washington | 4 hr |
| Sep 15, 12:16 PM MDT | Areal Flood Advisory | SLC | Davis, Morgan, Salt Lake, Utah | 89 min |
| Sep 15, 12:29 PM MDT | Flash Flood Warning | SLC | Tooele | 2 hr |
| Sep 15, 1:50 PM MDT | Areal Flood Advisory | SLC | Salt Lake | 55 min |
| Sep 15, 2:43 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 2 hr |
| Sep 15, 3:20 PM MDT | Flash Flood Warning | SLC | Kane, Washington | 4 hr |
Nearby
Flash Flood Warnings in Utah, 2015Every flash flood warning in 2015
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.