Alert archive / Utah / Flash Flood Warnings in 2015
Flash Flood Warning 49, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Aug 11, 2015, 5:35 PM MDT for Kane 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
- Aug 11, 2015, 5:35 PM MDT (23:35 UTC)
- Expired
- Aug 11, 2015, 9:30 PM MDT
- In force
- 4 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
County Kane County, UT
The radar
The Cedar City radar (KICX), 52 km from the middle of the area, began a volume at 23:35 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, 11.6 hours before the alert went out and 230 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
- 413 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 1330 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
601 WGUS55 KSLC 112339 FFWSLC UTC025-120330- /O.NEW.KSLC.FF.W.0049.150811T2335Z-150812T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 535 PM MDT TUE AUG 11 2015 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN KANE COUNTY IN UTAH... * UNTIL 930 PM MDT * AT 535 PM MDT...DOPPLER RADAR INDICATED OVER AN INCH OF RAINFALL HAS FALLEN OVER THE UPPER DRAINAGE OF KANAB CREEK. THIS AMOUNT OF PRECIPITATION IS EXPECTED TO PRODUCE FLASH FLOODING ALONG THE CREEK. KANAB CREEK FLOWS SOUTH NEAR THE TOWN OF KANAB. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... KANAB AND GLENDALE. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ANTICIPATE BEING IN THIS DRAINAGE UNTIL THE LATE HOURS ...PLEASE TAKE CARE AND BE AWARE OF HIGH WATER. && LAT...LON 3738 11239 3700 11250 3700 11259 3735 11261 $$ MCINERNEY
2 follow-up statements
133 WGUS75 KSLC 120141 FFSSLC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 737 PM MDT TUE AUG 11 2015 UTC025-120330- /O.CON.KSLC.FF.W.0049.000000T0000Z-150812T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KANE UT- 737 PM MDT TUE AUG 11 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM MDT FOR SOUTHWESTERN KANE COUNTY... AT 737 PM MDT...RAINFALL OVER THE UPPER DRAINAGES OF KANAB CREEK HAS DIMINISHED. HOWEVER...IT IS INFERRED THAT IT WILL REQUIRE ADDITIONAL TIME FOR THE STREAM TO DEWATER TO SAFE LEVELS. OVER AN INCH OF RAINFALL HAD FALLEN OVER A WIDE SWATCH OF HEADWATER STREAMS OF THE KANAB CREEK DRAINAGE EARLIER THIS EVENING. AS A RESULT...HIGH FLOWS ARE NOW COURSING THROUGH THE DRAINAGE TO THE SOUTH. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... KANAB AND GLENDALE. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE BANKS OF KANAB CREEK THROUGH THE NIGHTTIME HOURS...PLEASE TAKE CARE AND WATCH FOR HIGH WATER. && LAT...LON 3738 11239 3700 11250 3700 11259 3735 11261 $$ MCINERNEY
900 WGUS75 KSLC 120326 FFSSLC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 926 PM MDT TUE AUG 11 2015 UTC025-120334- /O.EXP.KSLC.FF.W.0049.000000T0000Z-150812T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KANE UT- 926 PM MDT TUE AUG 11 2015 ...THE FLASH FLOOD WARNING FOR SOUTHWESTERN KANE COUNTY WILL EXPIRE AT 930 PM MDT... RUNOFF FROM EARLIER PRECIPITATION OVER THE UPPER DRAINAGES OF KANAB CREEK HAS DIMINISHED AND RIVER AND STREAM LEVELS WILL CONTINUE TO DECREASE THROUGH THE REMAINDER OF THE EVENING. 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 3738 11239 3700 11250 3700 11259 3735 11261 $$ LC
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 2:44 PM MDT | Special Weather Statement | SLC | Tooele | 61 min |
| Aug 11, 3:46 PM MDT | Special Weather Statement | SLC | Tooele | 59 min |
| Aug 11, 4:18 PM MDT | Flash Flood Warning | SLC | Tooele | 3 hr |
| Aug 11, 5:20 PM MDT | Special Weather Statement | SLC | Cache, Davis, Morgan, Rich, Salt Lake, Weber | 40 min |
| Aug 11, 5:25 PM MDT | Special Weather Statement | SLC | Davis, Salt Lake, Weber | 50 min |
| Aug 11, 5:55 PM MDT | Special Weather Statement | SLC | Davis, Weber | 50 min |
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.