Alert archive / Nevada / Flash Flood Warnings in 1997
Flash Flood Warning 56, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 1, 1997, 6:36 PM PDT for Clark County, Nevada. It was in force for 84 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 1, 1997, 6:36 PM PDT (01:36 UTC)
- Expired
- Sep 1, 1997, 8:00 PM PDT
- In force
- 84 min
- Issued by
- NWS Las Vegas, NV
- Area
- Whole counties
County Clark County, NV
The radar
The Las Vegas radar (KESX), 58 km from the middle of the area, began a volume at 01:36 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
Mercury/Desert R, NV (KDRA), launched 00:00Z, 1.6 hours before the alert went out and 99 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
- 1514 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1975 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Las Vegas, NV wrote its last area forecast discussion before this flash flood warning went out at Sep 1, 2:46 PM PDT, 3 hours 50 minutes earlier.
Area forecast discussion, Sep 1, 2:46 PM PDT, 3 hours 50 minutes before
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 245 PM PDT MON SEP 1 1997 CONTINUING FLASH FLOOD WATCH FOR NVZ016-018>022...CAZ028-029 AND AZZ031-001>003 TIL 9 PM. WATCH MAY NEED TO BE EXTENDED INTO LINCOLN COUNTY LTR IF CURRENT TRENDS CONT. 12Z UA CHARTS AND SOUNDINGS POINTED TO AN ACTIVE TSTM DAY...AND THAT WELL UNDERWAY. INCRG SLY FLOW BRINGING DEEP LAYER MONSOONAL MSTR INTO REGION. MSTR COMBINED WITH DYNAMICS FRM APCHG MEX DISTURBANCE PRODUCING NUMEROUS TSTMS. SO FAR THEY ARE VRY HEAVY RAIN PRODUCERS WITH REFLECTIVITY CORES BEING CARRIED LOW AND IR STLT TOPS WARM. G55 KTS AT VCNTY NXP LIKELY FRM WET MICROBURST AND HAVE HAD RPTS OF .25 INCH HAIL AT HUALAPAI MTN IN MOHAVE CO. DYNAMICS FRM VORT CROSSING WRN AZ WILL CONT TO KEEP TSTMS GOING WELL INTO THE NIGHT WITH MAIN THREAT BEING FLASH FLOODING. MODELS ALL KEEP DEEP LAYERED TROPICAL MSTR ACRS THE AREA INTO WED WITH ETA48 AGAIN INDCG YET ANOTHER DISTURBANCE MOVG UP THRU WRN AZ TUE AFT. NOT MATTER WHAT MODEL YOU PICK...LIKELY THAT ADDTIONAL DISTURBANCES WILL RIDE UP ALONG THE PERIPHERY OF THE HIGH AND SPARK TSTMS TUE/TUE NGT. LEANING FCST THAT WAY FOR NOW WITH A DECREASE IN POPS ON WED AS DYNAMICS FADE. DRYING TREND CONTS INTO EXTENDED FOR SRN NV (I HOPE) WITH SOME HINT AT RETURNING SWLY FLOW. LAS 5332. NEMETH SRN NV...FLASH FLOOD WATCH 17Z-04Z NVZ016-018>22 ERN CA...FLASH FLOOD WATCH 17Z-04Z CAZ029-029 NW AZ ...FLASH FLOOD WATCH 17Z-04Z AZZ0031-001>003
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 6:26 PM PDT | Flash Flood Warning | VEF | Clark | 94 min |
| Sep 2, 4:20 PM PDT | Severe Thunderstorm Warning | VEF | Esmeralda, Nye | 70 min |
Nearby
Flash Flood Warnings in Nevada, 1997Every flash flood warning in 1997
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.