Alert archive / Nevada / Red Flag Warnings in 2012
Red Flag Warning 8, NWS Las Vegas, NV
NWS Las Vegas, NV issued this red flag warning at Apr 9, 2012, 6:42 AM PDT for Inyo County, San Bernardino County, Tulare County, California; Mohave County, Arizona; 4 counties in Nevada. It took effect at Apr 10, 2012, 11:00 AM PDT. It was in force for 8 hr. 7 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
- Apr 9, 2012, 6:42 AM PDT (13:42 UTC)
- In effect from
- Apr 10, 2012, 11:00 AM PDT
- Expired
- Apr 10, 2012, 7:00 PM PDT
- In force
- 8 hr
- Issued by
- NWS Las Vegas, NV
Counties Mohave County, AZ, Inyo County, CA, San Bernardino County, CA, Tulare County, CA, Clark County, NV, Esmeralda County, NV, Lincoln County, NV, Nye County, NV
The radar
The Las Vegas radar (KESX), 160 km from the middle of the area, began a volume at 13:45 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 |
|---|---|---|---|
| Apr 10, 1:34 PM PDT | NON-TSTM WND GST 43 | 5 Ene Boulder City, NV | HOOVER DAM BYPASS BRIDGE MID-SPAN MESONET SITE REPORTED A PEAK WIND GUST OF 43 MPH AT AN ELEVATION OF 1436 FEET. |
| Apr 10, 1:45 PM PDT | NON-TSTM WND GST 45 | Mercury (Nts A23), NV | THE MERCURY A23 MESONET SITE MEASURED A PEAK GUST OF 45 MPH AT AN ELEVATION OF 3678 FEET. |
| Apr 10, 4:00 PM PDT | NON-TSTM WND GST 47 | 2 Ese Dyer, NV | A MESONET SITE IN DYER MEASURED A PEAK WIND GUST OF 47 MPH AT AN ELEVATION OF 4883 FEET. |
| Apr 10, 4:06 PM PDT | NON-TSTM WND GST 53 | Bishop Airport, CA | THE BISHOP AIRPORT MEASURED A PEAK WIND GUST OF 53 MPH AT AN ELEVATION OF 4102 FEET. |
| Apr 10, 4:20 PM PDT | NON-TSTM WND GST 55 | Sierra Rotors 10, CA | SIERRA ROTORS SITE NUMBER 10 MEASURED A PEAK WIND GUST OF 55 MPH AT AN ELEVATION OF 3868 FEET. |
| Apr 10, 4:40 PM PDT | NON-TSTM WND GST 50 | Sierra Rotors 15, CA | SIERRA ROTORS SITE NUMBER 15 MEASURED A PEAK WIND GUST OF 50 MPH AT AN ELEVATION OF 3727 FEET. |
| Apr 10, 4:42 PM PDT | NON-TSTM WND GST 57 | Oak Creek Raws, CA | OAK CREEK RAWS MEASURED A PEAK WIND GUST OF 57 MPH AT AN ELEVATION OF 4900 FEET. |
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, 1.7 hours before the alert went out and 71 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
- 4456 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
780 WWUS85 KVEF 091342 RFWVEF URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LAS VEGAS NV 642 AM PDT MON APR 9 2012 .AN AREA OF LOW PRESSURE SLOWLY APPROACHING THE CALIFORNIA COAST WILL BRING AN INCREASE IN SOUTH WINDS TUESDAY. VERY DRY CONDITIONS ALREADY IN PLACE WILL CONTINUE THROUGH TUESDAY. ANY NEW FIRE START COULD QUICKLY SPREAD WITH THESE CONDITIONS. AZZ101-102-CAZ229-NVZ465-466-101400- /O.UPG.KVEF.FW.A.0004.120410T1700Z-120411T0300Z/ /O.NEW.KVEF.FW.W.0008.120410T1700Z-120411T0300Z/ LAKE MEAD NRA/COLORADO RIVER-AZ SIDE- NORTHWEST DESERTS/NORTHWEST PLATEAU-LOWER COLORADO RIVER VALLEY- CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH- LAKE MEAD NRA/COLORADO RIVER-NV SIDE- 642 AM PDT MON APR 9 2012 /642 AM MST MON APR 9 2012/ ...RED FLAG WARNING IN EFFECT FROM 10 AM PDT /10 AM MST/ TO 8 PM PDT /8 PM MST/ TUESDAY FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 101...102...229...465 AND 466... THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A RED FLAG WARNING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM 10 AM PDT /10 AM MST/ TO 8 PM PDT /8 PM MST/ TUESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...IN ARIZONA...FIRE WEATHER ZONE 101 LAKE MEAD NRA/COLORADO RIVER-AZ SIDE AND FIRE WEATHER ZONE 102 NORTHWEST DESERTS/NORTHWEST PLATEAU. IN CALIFORNIA...FIRE WEATHER ZONE 229 LOWER COLORADO RIVER VALLEY. IN NEVADA...FIRE WEATHER ZONE 465 CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH AND FIRE WEATHER ZONE 466 LAKE MEAD NRA/COLORADO RIVER-NV SIDE. * TIMING...POOR HUMIDITY RECOVERY TONIGHT WILL ALLOW VALUES TO QUICKLY FALL BELOW 15 PERCENT TUESDAY MORNING AS WIND SPEEDS INCREASE BY LATE MORNING. * WIND...SOUTH 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * HUMIDITY...MINIMUM VALUES BETWEEN 5 AND 10 PERCENT. * IMPACTS...THE COMBINATION OF GUSTY WINDS...LOW RELATIVE HUMIDITY AND DRY FUELS WILL CREATE CONDITIONS THAT ARE FAVORABLE FOR EXTREME FIRE BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXTREME FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/LASVEGAS
3 follow-up statements
827 WWUS85 KVEF 092148 RFWVEF URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LAS VEGAS NV 248 PM PDT MON APR 9 2012 .AN AREA OF LOW PRESSURE SLOWLY APPROACHING THE CALIFORNIA COAST WILL BRING AN INCREASE IN SOUTH WINDS ACROSS INYO COUNTY CALIFORNIA AND MUCH OF SOUTHERN NEVADA TUESDAY. VERY DRY CONDITIONS ALREADY IN PLACE WILL CONTINUE THROUGH TUESDAY. ANY NEW FIRE START COULD QUICKLY SPREAD WITH THESE CONDITIONS. CAZ226-227-NVZ460-462-101300- /O.EXB.KVEF.FW.W.0008.120410T1800Z-120411T0200Z/ OWENS VALLEY/SOUTHERN INYO FOREST-DEATH VALLEY NATIONAL PARK- ESMERALDA AND NYE COUNTY DESERTS/CNC DISPATCH- NYE COUNTY DESERTS/LAS VEGAS DISPATCH- 248 PM PDT MON APR 9 2012 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM PDT TUESDAY FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 226...227...460 AND 462... THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A RED FLAG WARNING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM 11 AM TO 7 PM PDT TUESDAY. * AFFECTED AREA...IN CALIFORNIA...FIRE WEATHER ZONE 226 OWENS VALLEY/SOUTHERN INYO FOREST AND FIRE WEATHER ZONE 227 DEATH VALLEY NATIONAL PARK. IN NEVADA...FIRE WEATHER ZONE 460 ESMERALDA AND NYE COUNTY DESERTS/CNC DISPATCH AND FIRE WEATHER ZONE 462 NYE COUNTY DESERTS/LAS VEGAS DISPATCH. * TIMING...SOUTH WINDS WILL INCREASE TUESDAY MORNING THEN PEAK DURING THE AFTERNOON HOURS BEFORE DECREASING BELOW CRITICAL THRESHOLDS TUESDAY EVENING. * WIND...SOUTH 20 TO 30 MPH WITH GUSTS BETWEEN 35 AND 45 MPH. * HUMIDITY...5 TO 9 PERCENT. * IMPACTS...THE COMBINATION OF GUSTY WINDS...LOW RELATIVE HUMIDITY AND DRY FUELS WILL CREATE CONDITIONS THAT ARE FAVORABLE FOR EXTREME FIRE BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE ADVISE THE APPROPRIATE FIRE WEATHER OFFICIALS IN THE FIELD OF THIS RED FLAG WARNING. && $$ AZZ101-102-CAZ229-NVZ465-466-101300- /O.EXT.KVEF.FW.W.0008.120410T1800Z-120411T0200Z/ LAKE MEAD NRA/COLORADO RIVER-AZ SIDE- NORTHWEST DESERTS/NORTHWEST PLATEAU-LOWER COLORADO RIVER VALLEY- CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH- LAKE MEAD NRA/COLORADO RIVER-NV SIDE- 248 PM PDT MON APR 9 2012 /248 PM MST MON APR 9 2012/ ...RED FLAG WARNING NOW IN EFFECT FROM 11 AM PDT /11 AM MST/ TO 7 PM PDT /7 PM MST/ TUESDAY FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 101...102...229...465 AND 466... THE RED FLAG WARNING IS NOW IN EFFECT FROM 11 AM PDT /11 AM MST/ TO 7 PM PDT /7 PM MST/ TUESDAY. * AFFECTED AREA...IN ARIZONA...FIRE WEATHER ZONE 101 LAKE MEAD NRA/COLORADO RIVER-AZ SIDE AND FIRE WEATHER ZONE 102 NORTHWEST DESERTS/NORTHWEST PLATEAU. IN CALIFORNIA...FIRE WEATHER ZONE 229 LOWER COLORADO RIVER VALLEY. IN NEVADA...FIRE WEATHER ZONE 465 CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH AND FIRE WEATHER ZONE 466 LAKE MEAD NRA/COLORADO RIVER-NV SIDE. * TIMING...POOR HUMIDITY RECOVERY TONIGHT WILL ALLOW VALUES TO QUICKLY FALL BELOW 15 PERCENT TUESDAY MORNING. WIND SPEEDS WILL INCREASE BY LATE MORNING THEN PEAK IN THE AFTERNOON HOURS BEFORE DECREASING BELOW CRITICAL THRESHOLDS TUESDAY EVENING. * WIND...SOUTH 15 TO 25 MPH WITH GUSTS AROUND 35 MPH. * HUMIDITY...MINIMUM VALUES BETWEEN 5 AND 10 PERCENT. * IMPACTS...THE COMBINATION OF GUSTY WINDS...LOW RELATIVE HUMIDITY AND DRY FUELS WILL CREATE CONDITIONS THAT ARE FAVORABLE FOR EXTREME FIRE BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE ADVISE THE APPROPRIATE FIRE WEATHER OFFICIALS IN THE FIELD OF THIS RED FLAG WARNING. && $$ HTTP://WEATHER.GOV/LASVEGAS
640 WWUS85 KVEF 101251 RFWVEF URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LAS VEGAS NV 551 AM PDT TUE APR 10 2012 .AN AREA OF LOW PRESSURE SLOWLY APPROACHING THE CALIFORNIA COAST WILL BRING AN INCREASE IN SOUTH WINDS ACROSS INYO COUNTY CALIFORNIA AND MUCH OF SOUTHERN NEVADA AND NORTHWEST ARIZONA TODAY. VERY DRY CONDITIONS REMAIN IN PLACE. ANY NEW FIRE START COULD QUICKLY SPREAD WITH THESE CONDITIONS. AZZ101-102-CAZ226-227-229-NVZ460-462-465-466-110200- /O.CON.KVEF.FW.W.0008.120410T1800Z-120411T0200Z/ LAKE MEAD NRA/COLORADO RIVER-AZ SIDE- NORTHWEST DESERTS/NORTHWEST PLATEAU- OWENS VALLEY/SOUTHERN INYO FOREST-DEATH VALLEY NATIONAL PARK- LOWER COLORADO RIVER VALLEY- ESMERALDA AND NYE COUNTY DESERTS/CNC DISPATCH- NYE COUNTY DESERTS/LAS VEGAS DISPATCH- CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH- LAKE MEAD NRA/COLORADO RIVER-NV SIDE- 551 AM PDT TUE APR 10 2012 /551 AM MST TUE APR 10 2012/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM PDT /11 AM MST/ THIS MORNING TO 7 PM PDT /7 PM MST/ THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 101...102... 226...227...229...460...462...465 AND 466... A RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM PDT /11 AM MST/ THIS MORNING TO 7 PM PDT /7 PM MST/ THIS EVENING. * AFFECTED AREA...IN CALIFORNIA...FIRE WEATHER ZONE 226 OWENS VALLEY/SOUTHERN INYO FOREST AND FIRE WEATHER ZONE 227 DEATH VALLEY NATIONAL PARK. IN NEVADA...FIRE WEATHER ZONE 460 ESMERALDA AND NYE COUNTY DESERTS/CNC DISPATCH AND FIRE WEATHER ZONE 462 NYE COUNTY DESERTS/LAS VEGAS DISPATCH. * TIMING...SOUTH WINDS WILL STEADILY INCREASE THIS MORNING THEN PEAK DURING THE AFTERNOON HOURS BEFORE DECREASING BELOW CRITICAL THRESHOLDS THIS EVENING. * WIND...SOUTH 20 TO 30 MPH WITH GUSTS BETWEEN 35 AND 45 MPH. * HUMIDITY...5 TO 9 PERCENT. * IMPACTS...THE COMBINATION OF GUSTY WINDS...LOW RELATIVE HUMIDITY AND DRY FUELS WILL CREATE CONDITIONS THAT ARE FAVORABLE FOR EXTREME FIRE BEHAVIOR. PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE ADVISE THE APPROPRIATE FIRE WEATHER OFFICIALS IN THE FIELD OF THIS RED FLAG WARNING. && $$ HTTP://WEATHER.GOV/LASVEGAS
860 WWUS85 KVEF 110140 RFWVEF URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LAS VEGAS NV 640 PM PDT TUE APR 10 2012 AZZ101-102-CAZ226-227-229-NVZ460-462-465-466-110245- /O.EXP.KVEF.FW.W.0008.000000T0000Z-120411T0200Z/ LAKE MEAD NRA/COLORADO RIVER-AZ SIDE- NORTHWEST DESERTS/NORTHWEST PLATEAU- OWENS VALLEY/SOUTHERN INYO FOREST-DEATH VALLEY NATIONAL PARK- LOWER COLORADO RIVER VALLEY- ESMERALDA AND NYE COUNTY DESERTS/CNC DISPATCH- NYE COUNTY DESERTS/LAS VEGAS DISPATCH- CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH- LAKE MEAD NRA/COLORADO RIVER-NV SIDE- 640 PM PDT TUE APR 10 2012 /640 PM MST TUE APR 10 2012/ ...RED FLAG WARNING WILL EXPIRE AT 7 PM PDT /7 PM MST/ THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 101...102...226...227...229...460...462...465 AND 466... THE RED FLAG WARNING WILL EXPIRE AT 7 PM PDT /7 PM MST/ THIS EVENING. ALTHOUGH RELATIVE HUMIDITY VALUES ARE GENERALLY STILL BELOW THE CRITICAL 15 PERCENT LEVEL EARLY THIS EVENING...THEY ARE RECOVERING FROM THE AFTERNOON MINIMUM VALUES. THIS ALONG WITH THE EXPECTANT DECREASE IN WINDS THIS EVENING WILL BRING AN END TO THE CURRENT RED FLAG CONDITIONS AND WILL ALLOW THE RED FLAG WARNING TO EXPIRE AS OF 7 PM PDT / MST. $$ HTTP://WEATHER.GOV/LASVEGAS
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 3:02 PM PDT | Wind Advisory | VEF | Inyo | 28 hr |
Nearby
Red Flag Warnings in Nevada, 2012Red Flag Warnings in California, 2012Red Flag Warnings in Arizona, 2012Every red flag 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.