Alert archive / Nebraska / Red Flag Warnings in 2012

Red Flag Warning 41, NWS North Platte, NE

September 8, 20125 counties in Nebraska

NWS North Platte, NE issued this red flag warning at Sep 8, 2012, 3:55 AM CDT for 5 counties in Nebraska. It took effect at Sep 8, 2012, 1:00 PM CDT. It was in force for 7 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
Sep 8, 2012, 3:55 AM CDT (08:55 UTC)
In effect from
Sep 8, 2012, 1:00 PM CDT
Expired
Sep 8, 2012, 8:22 PM CDT
In force
7 hr
Issued by
NWS North Platte, NE

Counties Custer County, NE, Garfield County, NE, Holt County, NE, Loup County, NE, Wheeler County, NE

The radar

The North Platte radar (KLNX), 122 km from the middle of the area, began a volume at 08:54 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 00:00Z, 8.9 hours before the alert went out and 153 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.

Skew-T log-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2012-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2012-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2391 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

456 
WWUS83 KLBF 080855
RFWLBF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
355 AM CDT SAT SEP 8 2012

...CRITICAL FIRE CONDITIONS EXPECTED THIS AFTERNOON...

.HIGH PRESSURE ON THE HIGH PLAINS WILL BRING WARM AND VERY DRY
CONDITIONS TO MUCH OF WESTERN AND NORTH CENTRAL NEBRASKA. WIND IN
NORTH CENTRAL NEBRASKA WILL INCREASE THE FIRE DANGER.

NEZ209-081700-
/O.NEW.KLBF.FW.W.0041.120908T1800Z-120909T0200Z/
LOUP RIVERS BASIN-
355 AM CDT SAT SEP 8 2012

...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM
CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE LOUP
RIVER BASIN IN NORTH CENTRAL NEBRASKA...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A RED
FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN
EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM CDT THIS EVENING.

* AFFECTED AREA...IN NEBRASKA...FIRE WEATHER ZONE 209 LOUP 
  RIVERS BASIN.

* WINDS...NORTHWEST 10 TO 15 MPH WITH GUSTS UP TO 25 MPH.

* RELATIVE HUMIDITY...AS LOW AS 18 PERCENT.

* IMPACTS...WITH DRY FUELS...LOW RELATIVE HUMIDITY AND BREEZY
  CONDITIONS...FIRES WILL START EASILY AND...IF STARTED...WILL 
  SPREAD RAPIDLY. 

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/LBF
2 follow-up statements
460 
WWUS83 KLBF 082137
RFWLBF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
437 PM CDT SAT SEP 8 2012

...CRITICAL FIRE CONDITIONS EXPECTED INTO THIS EVENING...

.HIGH PRESSURE ON THE HIGH PLAINS WILL BRING WARM AND VERY DRY
CONDITIONS TO MUCH OF WESTERN AND NORTH CENTRAL NEBRASKA. WIND IN
NORTH CENTRAL NEBRASKA WILL INCREASE THE FIRE DANGER.

NEZ209-090200-
/O.CON.KLBF.FW.W.0041.000000T0000Z-120909T0200Z/
LOUP RIVERS BASIN-
437 PM CDT SAT SEP 8 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE LOUP RIVER BASIN IN
NORTH CENTRAL NEBRASKA...

* AFFECTED AREA...IN NEBRASKA...FIRE WEATHER ZONE 209 LOUP 
  RIVERS BASIN.

* WINDS...NORTHWEST 10 TO 15 MPH WITH GUSTS UP TO 25 MPH.

* RELATIVE HUMIDITY...AS LOW AS 18 PERCENT.

* IMPACTS...WITH DRY FUELS...LOW RELATIVE HUMIDITY AND BREEZY
  CONDITIONS...FIRES WILL START EASILY AND SPREAD RAPIDLY.

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.

&&

$$

NEZ204-210-090545-
/O.NEW.KLBF.FW.A.0025.120909T1700Z-120910T0300Z/
EASTERN PANHANDLE/CRESCENT LAKE NWR-FRENCHMAN BASIN-
437 PM CDT SAT SEP 8 2012 /337 PM MDT SAT SEP 8 2012/

...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH
SUNDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR AREAS WEST OF 
HIGHWAY 83...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A FIRE
WEATHER WATCH FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN
EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING.

* AFFECTED AREA...IN NEBRASKA...FIRE WEATHER ZONE 204 EASTERN 
  PANHANDLE/CRESCENT LAKE NWR AND FIRE WEATHER ZONE 210 
  FRENCHMAN BASIN.

* WINDS...SOUTH 10 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* RELATIVE HUMIDITY...AS LOW AS 13 PERCENT.

* IMPACTS...WITH DRY FUELS...LOW RELATIVE HUMIDITY AND BREEZY
  CONDITIONS...FIRES WILL START EASILY AND SPREAD RAPIDLY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

&&

$$

HTTP://WEATHER.GOV/LBF
788 
WWUS83 KLBF 090122
RFWLBF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
822 PM CDT SAT SEP 8 2012

...CRITICAL FIRE CONDITIONS HAVE ENDED ACROSS PORTIONS OF CENTRAL
AND NORTH CENTRAL NEBRASKA...

NEZ209-090230-
/O.CAN.KLBF.FW.W.0041.000000T0000Z-120909T0200Z/
LOUP RIVERS BASIN-
822 PM CDT SAT SEP 8 2012

...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE
HUMIDITY FOR THE LOUP RIVER BASIN IN NORTH CENTRAL NEBRASKA...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS CANCELLED THE
RED FLAG WARNING.

RELATIVE HUMIDITIES HAVE RECOVERED TO 30 TO 40 PERCENT...AND
WINDS HAVE DIMINISHED TO UNDER 10 MPH...SO THE THREAT FOR CRITICAL
FIRE DANGER HAS ENDED. NEAR CRITICAL TO CRITICAL FIRE DANGER IS
POSSIBLE ON SUNDAY AND A FIRE WEATHER WATCH IS IN EFFECT FOR
PORTIONS OF WESTERN NEBRASKA.

$$

NEZ204-210-090930-
/O.CON.KLBF.FW.A.0025.120909T1700Z-120910T0300Z/
EASTERN PANHANDLE/CRESCENT LAKE NWR-FRENCHMAN BASIN-
822 PM CDT SAT SEP 8 2012 /722 PM MDT SAT SEP 8 2012/

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON
THROUGH SUNDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
AREAS WEST OF HIGHWAY 83...

* AFFECTED AREA...IN NEBRASKA...FIRE WEATHER ZONE 204 EASTERN 
  PANHANDLE/CRESCENT LAKE NWR AND FIRE WEATHER ZONE 210 
  FRENCHMAN BASIN.

* WINDS...SOUTH 10 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* RELATIVE HUMIDITY...AS LOW AS 13 PERCENT.

* IMPACTS...WITH DRY FUELS...LOW RELATIVE HUMIDITY AND BREEZY 
  CONDITIONS...FIRES WILL START EASILY AND SPREAD RAPIDLY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

&&

$$

HTTP://WEATHER.GOV/LBF

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 8, 4:37 PM CDTFire Weather WatchLBFArthur, Chase, Cherry, Deuel, Garden, Grant and 5 more11 hr

Nearby

Red Flag Warnings in Nebraska, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.