Alert archive / Nebraska / Red Flag Warnings in 2011
Red Flag Warning 4, NWS North Platte, NE
NWS North Platte, NE issued this red flag warning at Apr 5, 2011, 9:41 AM MDT for 5 counties in Nebraska. It took effect at Apr 5, 2011, 1:00 PM MDT. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 5, 2011, 9:41 AM MDT (15:41 UTC)
- In effect from
- Apr 5, 2011, 1:00 PM MDT
- Expired
- Apr 5, 2011, 5:58 PM MDT
- In force
- 5 hr
- Issued by
- NWS North Platte, NE
Counties Chase County, NE, Frontier County, NE, Hayes County, NE, Lincoln County, NE, Perkins County, NE
The radar
The North Platte radar (KLNX), 147 km from the middle of the area, began a volume at 15:45 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.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 3.7 hours before the alert went out and 65 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
- 1872 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 308 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
509 WWUS83 KLBF 051541 RFWLBF URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE NORTH PLATTE NE 1041 AM CDT TUE APR 5 2011 ...CRITICAL FIRE DANGER THIS AFTERNOON... .RELATIVE HUMIDITY PERCENTAGES ARE EXPECTED TO DROP TO THE TEENS AS TEMPERATURES WARM THIS AFTERNOON INTO THE LOW 70S. ALSO...DEEP MIXING IN THE BOUNDARY LAYER WILL BRING GUSTY WINDS TO THE SURFACE DURING THE WARMEST PORTION OF THE AFTERNOON. THE COMBINATION OF THE LOW RELATIVE HUMIDITIES AND GUSTY WINDS WILL CREATE EXTREME FIRE DANGER CONDITIONS DURING THE AFTERNOON HOURS TODAY MAINLY SOUTH OF A LINE FROM VENANGO TO MADRID TO BRADY. NEZ210-219-052300- /O.NEW.KLBF.FW.W.0004.110405T1900Z-110405T2300Z/ FRENCHMAN BASIN-LOESS PLAINS- 1041 AM CDT TUE APR 5 2011 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 210 AND 219... THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING. * AFFECTED AREA...IN NEBRASKA...FIRE WEATHER ZONE 210 FRENCHMAN BASIN...FIRE WEATHER ZONE 219 LOESS PLAINS. * WIND...WESTERLY WINDS OF 15 TO 25 MPH WILL OCCUR THIS AFTERNOON...WITH GUSTS UP TO 35 MPH. * HUMIDITY...RELATIVE HUMIDITIES WILL DROP TO THE TEENS...WITH PORTIONS OF THE AREA SEEING IT DROP BELOW 15 PERCENT DURING THE AFTERNOON. * IMPACTS...CRITICAL FIRE CONDITIONS WILL CAUSE ANY FIRES TO HAVE THE POTENTIAL FOR EXPLOSIVE GROWTH. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ BROOKS HTTP://WEATHER.GOV/NORTHPLATTE
2 follow-up statements
986 WWUS83 KLBF 052245 AAA RFWLBF URGENT - FIRE WEATHER MESSAGE...UPDATED NATIONAL WEATHER SERVICE NORTH PLATTE NE 545 PM CDT TUE APR 5 2011 ...CRITICAL FIRE DANGER THIS AFTERNOON... .RELATIVE HUMIDITY IS EXPECTED TO DROP TO 15 PERCENT OR LESS AS TEMPERATURES WARM THIS AFTERNOON INTO THE 70S. ALSO...DEEP MIXING IN THE BOUNDARY LAYER WILL BRING GUSTY WINDS TO THE SURFACE DURING THE WARMEST PORTION OF THE AFTERNOON. THE COMBINATION OF THE LOW HUMIDITY AND GUSTY WINDS WILL CREATE EXTREME FIRE DANGER CONDITIONS DURING THE AFTERNOON HOURS TODAY MAINLY SOUTH OF A LINE FROM VENANGO TO MADRID TO BRADY. NEZ210-219-060000- /O.EXT.KLBF.FW.W.0004.000000T0000Z-110406T0000Z/ FRENCHMAN BASIN-LOESS PLAINS- 545 PM CDT TUE APR 5 2011 ...RED FLAG WARNING NOW IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 210 AND 219... THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 7 PM CDT THIS EVENING. * AFFECTED AREA...IN NEBRASKA...FIRE WEATHER ZONE 210 FRENCHMAN BASIN...FIRE WEATHER ZONE 219 LOESS PLAINS. * WIND...WESTERLY WINDS OF 15 TO 25 MPH WILL OCCUR THIS AFTERNOON...WITH GUSTS UP TO 35 MPH. * HUMIDITY...RELATIVE HUMIDITY WILL DROP TO 15 PERCENT OR LESS DURING THE AFTERNOON. * IMPACTS...CRITICAL FIRE CONDITIONS WILL CAUSE ANY FIRES TO HAVE THE POTENTIAL FOR EXPLOSIVE GROWTH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/NORTHPLATTE
552 WWUS83 KLBF 052358 AAA RFWLBF URGENT - FIRE WEATHER MESSAGE...UPDATED NATIONAL WEATHER SERVICE NORTH PLATTE NE 658 PM CDT TUE APR 5 2011 NEZ210-219-060100- /O.CAN.KLBF.FW.W.0004.000000T0000Z-110406T0000Z/ FRENCHMAN BASIN-LOESS PLAINS- 658 PM CDT TUE APR 5 2011 ...RED FLAG WARNING IS CANCELLED FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 210 AND 219... THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS CANCELLED THE RED FLAG WARNING. WINDS HAVE DECREASED...RELATIVE HUMIDITY IS INCREASING AND FIRE DANGER HAS DIMINISHED. THE RED FLAG WARNING IS CANCELLED. $$ HTTP://WEATHER.GOV/NORTHPLATTE
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 2:21 PM MDT | Wind Advisory | LBF | Arthur, Chase, Deuel, Frontier, Garden, Grant and 8 more | 4 hr |
Nearby
Red Flag Warnings in Nebraska, 2011Every red flag warning in 2011
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.