Alert archive / Nevada / Red Flag Warnings in 2017
Red Flag Warning 4, NWS Las Vegas, NV
NWS Las Vegas, NV issued this red flag warning at May 12, 2017, 8:11 AM PDT for Clark County, Lincoln County, Nye County, Nevada. It took effect at May 12, 2017, 11:00 AM PDT. It was in force for 10 hr. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 12, 2017, 8:11 AM PDT (15:11 UTC)
- In effect from
- May 12, 2017, 11:00 AM PDT
- Expired
- May 12, 2017, 9:00 PM PDT
- In force
- 10 hr
- Issued by
- NWS Las Vegas, NV
Counties Clark County, NV, Lincoln County, NV, Nye County, NV
The radar
The Las Vegas radar (KESX), 185 km from the middle of the area, began a volume at 15:14 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 |
|---|---|---|---|
| May 12, 4:10 PM PDT | NON-TSTM WND GST 60 | 42 Ese Manhattan, NV | MESONET STATION CMP26, WARM SPRINGS SUMMIT CEMP. |
| May 12, 5:10 PM PDT | NON-TSTM WND GST 65 | 42 Ese Manhattan, NV | MESONET STATION CMP26, WARM SPRINGS SUMMIT CEMP. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 3.2 hours before the alert went out and 103 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
- 3054 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
436 WWUS85 KVEF 121511 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 811 AM PDT Fri May 12 2017 .A strong low pressure system moving into the Pacific Northwest will bring increasing winds to southern Nevada along with significantly lower humidity than what we experienced Wednesday and Thursday. NVZ462>465-130400- /O.NEW.KVEF.FW.W.0004.170512T1800Z-170513T0400Z/ Nye County Deserts/Las Vegas Dispatch-Sheep Range- Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- 811 AM PDT Fri May 12 2017 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 9 PM PDT THIS EVENING FOR FAR SOUTHERN NEVADA BELOW 5000 FEET... The National Weather Service in Las Vegas has issued a Red Flag Warning, which is in effect from 11 AM this morning to 9 PM PDT this evening. * AFFECTED AREA...In Nevada...Fire weather zones 462, 463, 464, and 465. * TIMING...Late this morning through this evening. * WIND...South to southwest 15 to 25 mph with gusts 35 to 45 mph. * HUMIDITY...8 to 15 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ weather.gov/lasvegas
1 follow-up statement
743 WWUS85 KVEF 130355 RFWVEF URGENT - FIRE WEATHER MESSAGE National Weather Service Las Vegas NV 855 PM PDT Fri May 12 2017 NVZ462>465-130500- /O.EXP.KVEF.FW.W.0004.000000T0000Z-170513T0400Z/ Nye County Deserts/Las Vegas Dispatch-Sheep Range- Spring Mountains- Clark and SW Lincoln County Deserts/Las Vegas Dispatch- 855 PM PDT Fri May 12 2017 ...RED FLAG WARNING WILL EXPIRE AT 9 PM PDT THIS EVENING FOR FAR SOUTHERN NEVADA BELOW 5000 FEET... Humidity values are starting to recover above 15 percent while winds are set to gradually decrease overnight. The Red Flag Warning will be allowed to expire. $$ weather.gov/lasvegas
Nearby
Red Flag Warnings in Nevada, 2017Every red flag warning in 2017
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.