Alert archive / Utah / Flash Flood Warnings in 2012
Flash Flood Warning 38, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Aug 1, 2012, 4:05 PM MDT for Kane County, Utah. It was in force for 4 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 1, 2012, 4:05 PM MDT (22:05 UTC)
- Expired
- Aug 1, 2012, 7:52 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), 49 km from the middle of the area, began a volume at 22:07 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 1, 5:05 PM MDT | FLASH FLOOD | 10 N Kanab, UT | FLASH FLOODING ON KANAB CREEK AND OAK CREEK. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 10.1 hours before the alert went out and 233 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
- 259 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 863 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
602
WGUS55 KSLC 012205
FFWSLC
UTC025-020200-
/O.NEW.KSLC.FF.W.0038.120801T2205Z-120802T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
405 PM MDT WED AUG 1 2012
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN KANE COUNTY IN UTAH
* UNTIL 800 PM MDT
* AT 400 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
HEAVY RAIN FROM A THUNDERSTORM OVER KANAB CREEK NORTH OF THE TOWN OF
KANAB. RADAR RAINFALL ESTIMATES OVER THIS AREA INCLUDE RAINFALL
AMOUNTS OF 2 INCHES IN A TWO HOUR TIME FRAME.
ADDITIONALLY...RAINFALL IN THE AREA CONTINUES TO FALL AT A VERY
RAPID RATE. PERSONS SHOULD BE ALERT THAT THIS CREEK FLOWS SOUTH INTO
THE TOWN OF KANAB. FLASH FLOODING IS ANTICIPATED TO REACH KANAB
AROUND 5PM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3745 11239 3700 11240 3701 11268 3704 11270
3726 11261 3746 11250
$$
MCINERNEY2 follow-up statements
654
WGUS75 KSLC 012358
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
558 PM MDT WED AUG 1 2012
UTC025-020200-
/O.CON.KSLC.FF.W.0038.000000T0000Z-120802T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE UT-
558 PM MDT WED AUG 1 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM MDT FOR
WESTERN KANE COUNTY...
AT 548 PM MDT...REPORTS OF MULTIPLE FLASH FLOODS IN THE HEADWATER
AND MAINSTEM AREAS OF KANAB CREEK WERE RECEIVED. MANY AREAS NORTH
OF KANAB CREEK ARE FLOODING AND CAN EXPECT TO CONVERGE AND FLOW INTO
THE MAIN CHANNEL THROUGH KANAB BETWEEN 6 AND 7PM. KANAB CREEK IS
VERY INCISED AND IS EXPECTED TO RETAIN THE FLOOD IT PASSES THROUGH
THE TOWN. HOWEVER THE HEADWATER AREAS ARE FLOWING OUT OF THEIR
CHANNELS AND POSE A SIGNIFICANT THREAT.
RAINFALL OVER THE AREA HAS DIMINISHED...BUT IT WILL REQUIRE MANY
HOURS BEFORE THESE STREAMS AND RIVER DEWATER. PLEASE BE VIGILANT IF
YOU PLAN ON TRAVELING OR RECREATING AROUND THESE DANGEROUS WATERS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3745 11239 3700 11240 3701 11268 3704 11270
3726 11261 3746 11250
$$
MCINERNEY733
WGUS75 KSLC 020152
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
752 PM MDT WED AUG 1 2012
UTC025-020201-
/O.CAN.KSLC.FF.W.0038.000000T0000Z-120802T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KANE UT-
752 PM MDT WED AUG 1 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR WESTERN KANE
COUNTY...SPECIFICALLY FOR KANAB CREEK...
FLOOD WATERS ARE EXPECTED TO RECEDE THROUGH THE LATE EVENING HOURS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
LAT...LON 3745 11239 3700 11240 3701 11268 3704 11270
3726 11261 3746 11250
$$
MERRILLThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 6:30 PM MDT | Flash Flood Warning | SLC | Iron | 4 hr |
| Jul 31, 6:30 PM MDT | Special Weather Statement | SLC | Kane | 30 min |
| Jul 31, 10:51 PM MDT | Flash Flood Warning | SLC | Washington | 4 hr |
| Aug 1, 2:30 AM MDT | Flash Flood Watch | SLC | 20 hr | |
| Aug 1, 2:51 PM MDT | Flash Flood Warning | SLC | Garfield | 4 hr |
| Aug 1, 3:09 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 6 hr |
| Aug 1, 5:17 PM MDT | Flash Flood Warning | SLC | Washington | 4 hr |
| Aug 1, 5:23 PM MDT | Flash Flood Warning | SLC | Kane, Washington | 4 hr |
| Aug 1, 5:27 PM MDT | Flash Flood Warning | SLC | Carbon, Emery | 4 hr |
Nearby
Flash Flood Warnings in Utah, 2012Every flash flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.