Alert archive / Nebraska / Red Flag Warnings in 2012

Red Flag Warning 54, NWS North Platte, NE

December 5, 20125 counties in Nebraska

NWS North Platte, NE issued this red flag warning at Dec 5, 2012, 3:00 AM CST for 5 counties in Nebraska. It took effect at Dec 5, 2012, 12:00 PM CST. It was in force for 6 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: Dec 5, 2012, 3:00 AM CST (09:00 UTC)
In effect from: Dec 5, 2012, 12:00 PM CST
Expired: Dec 5, 2012, 6:00 PM CST
In force: 6 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 09:03 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, 9.0 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2707 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 275 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.

500 
WWUS83 KLBF 050900
RFWLBF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
300 AM CST WED DEC 5 2012

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

.SOUTH TO SOUTHWEST WINDS WILL BE INCREASING ACROSS CENTRAL AND
NORTH CENTRAL NEBRASKA TODAY...WITH SUSTAINED WINDS FROM 15 TO 25
MPH AND OCCASIONAL GUSTS TO 30 MPH. AFTERNOON HIGH TEMPERATURES
WILL REACH THE MID 60S COMBINED WITH LOW DEWPOINTS...TO RESULT IN
RELATIVE HUMIDITY VALUES FALLING TO NEAR OR JUST BELOW 20 PERCENT
THIS AFTERNOON. THE COMBINATION OF THE WINDS...LOW RELATIVE
HUMIDITY VALUES AND DRY VEGETATION WILL INCREASE THE POTENTIAL FOR
EXPLOSIVE FIRE GROWTH.

NEZ209-052100-
/O.NEW.KLBF.FW.W.0054.121205T1800Z-121206T0000Z/
LOUP RIVERS BASIN-
300 AM CST WED DEC 5 2012

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM CST THIS
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR ZONE 209...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A RED
FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN
EFFECT FROM NOON TODAY TO 6 PM CST THIS EVENING.

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

* WINDS...SOUTH 15 TO 25 MPH WITH GUSTS UP TO 30 MPH.

* RELATIVE HUMIDITY...AS LOW AS 19 PERCENT.

* IMPACTS...WITH DRY FUELS...LOW RELATIVE HUMIDITY AND GUSTY
  WINDS...ANY FIRES WHICH MAY DEVELOP HAVE THE POTENTIAL FOR
  EXPLOSIVE GROWTH. ANY FIRES THAT DEVELOP COULD BECOME VERY
  DIFFICULT TO CONTAIN. USE CAUTION WHEN CONDUCTING ACTIVITIES
  WHICH COULD RESULT IN A FIRE.

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

865 
WWUS83 KLBF 051816
RFWLBF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1216 PM CST WED DEC 5 2012

...CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON...

.SOUTH TO SOUTHWEST WINDS OF 15 TO 20 MPH...WITH GUSTS TO 30 MPH
WILL OCCUR ACROSS CENTRAL AND NORTH CENTRAL NEBRASKA THIS AFTERNOON.
HIGH TEMPERATURES IN THE MID 60S COMBINED WITH LOW DEWPOINTS WILL
DROP RELATIVE HUMIDITY VALUES NEAR OR JUST BELOW 20 PERCENT. THE
COMBINATION OF THE WINDS...LOW RELATIVE HUMIDITY AND DRY
VEGETATION WILL BRING THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH
THROUGH THE AFTERNOON.

NEZ209-060000-
/O.CON.KLBF.FW.W.0054.000000T0000Z-121206T0000Z/
LOUP RIVERS BASIN-
1216 PM CST WED DEC 5 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR ZONE 209...

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

* WINDS...SOUTH 15 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* RELATIVE HUMIDITY...AS LOW AS 20 PERCENT.

* IMPACTS...WITH DRY FUELS...LOW RELATIVE HUMIDITY AND GUSTY 
  WINDS...ANY FIRES WHICH MAY DEVELOP HAVE THE POTENTIAL FOR 
  EXPLOSIVE GROWTH. ANY FIRES THAT DEVELOP COULD BECOME VERY 
  DIFFICULT TO CONTAIN. USE CAUTION WHEN CONDUCTING ACTIVITIES 
  WHICH COULD RESULT IN A FIRE. 

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

BROOKS

251 
WWUS83 KLBF 052346
RFWLBF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
546 PM CST WED DEC 5 2012

...RED FLAG WARNING EXPIRES AT 6 PM CST...

NEZ209-060100-
/O.EXP.KLBF.FW.W.0054.000000T0000Z-121206T0000Z/
LOUP RIVERS BASIN-
546 PM CST WED DEC 5 2012

...RED FLAG WARNING WILL EXPIRE AT 6 PM CST THIS EVENING FOR WIND
AND LOW RELATIVE HUMIDITY FOR ZONE 209...


$$

HTTP://WEATHER.GOV/LBF

Nearby

Red Flag Warnings in Nebraska, 2012 Every 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.