Alert archive / Nebraska / Red Flag Warnings in 2012

Red Flag Warning 13, NWS North Platte, NE

March 19, 20127 counties in Nebraska

NWS North Platte, NE issued this red flag warning at Mar 19, 2012, 3:19 AM MDT for 7 counties in Nebraska. It took effect at Mar 19, 2012, 11:00 AM MDT. 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: Mar 19, 2012, 3:19 AM MDT (09:19 UTC)
In effect from: Mar 19, 2012, 11:00 AM MDT
Expired: Mar 19, 2012, 5:58 PM MDT
In force: 7 hr
Issued by: NWS North Platte, NE

Counties Arthur County, NE, Cherry County, NE, Deuel County, NE, Garden County, NE, Grant County, NE, Keith County, NE, Sheridan County, NE

The radar

The North Platte radar (KLNX), 111 km from the middle of the area, began a volume at 09:21 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, 9.3 hours before the alert went out and 130 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: 1047 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1861 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 185 m²/s²
0-3 km storm-relative helicity: 252 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

264 
WWUS83 KLBF 190919
RFWLBF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
419 AM CDT MON MAR 19 2012

...RED FLAG WARNING TODAY FOR EASTERN NEBRASKA PANHANDLE...

.A DRY LINE WILL PUSH EAST TODAY ACROSS WESTERN NEBRASKA WITH LOW 
RELATIVE HUMIDITY AND GUSTY WINDS BEHIND THE DRY LINE.

NEZ204-191730-
/O.NEW.KLBF.FW.W.0013.120319T1700Z-120320T0000Z/
EASTERN PANHANDLE/CRESCENT LAKE NWR-
319 AM MDT MON MAR 19 2012

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM MDT
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EASTERN 
NEBRASKA PANHANDLE AND PORTIONS OF WEST 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 11 AM THIS MORNING TO 6 PM MDT THIS EVENING.

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

* WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH.

* RELATIVE HUMIDITY...AS LOW AS 12 PERCENT.

* IMPACTS...LOW RELATIVE HUMIDITY AND WINDS WILL COMBINE WITH 
  DRY VEGETATION TO CREATE CONDITIONS FOR CRITICAL FIRE DANGER. 
  FIRES THAT DEVELOP WILL BE CAPABLE OF EXPLOSIVE GROWTH AND 
  WILL SPREAD QUICKLY. 

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

1 follow-up statement

245 
WWUS83 KLBF 192358 AAA
RFWLBF

URGENT - FIRE WEATHER MESSAGE...UPDATED
NATIONAL WEATHER SERVICE NORTH PLATTE NE
658 PM CDT MON MAR 19 2012

NEZ204-200100-
/O.CAN.KLBF.FW.W.0013.000000T0000Z-120320T0000Z/
EASTERN PANHANDLE/CRESCENT LAKE NWR-
558 PM MDT MON MAR 19 2012

...RED FLAG WARNING IS CANCELLED FOR WESTERN NEBRASKA FOR
STRONG WINDS AND LOW RELATIVE HUMIDITY...

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

WINDS HAVE DECREASED MARKEDLY ACROSS THE WARNED AREA AND WITH THE
DECREASE AND LOSS OF DAYTIME HEATING...RELATIVE HUMIDITY SHOULD
INCREASE. THE CRITICAL FIRE DANGER PERIOD HAS ENDED.

$$

HTTP://WEATHER.GOV/LBF

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 6:06 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, Perkins	39 min
Mar 18, 6:38 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, Lincoln, McPherson	52 min
Mar 18, 6:53 PM MDT	Severe Thunderstorm Warning	LBF	Hayes, Lincoln	52 min
Mar 18, 7:05 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker, McPherson	40 min
Mar 18, 7:42 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	48 min
Mar 18, 8:04 PM MDT	Tornado Warning	LBF	Lincoln	26 min
Mar 18, 8:28 PM MDT	Tornado Warning	LBF	Lincoln, Logan, McPherson	32 min
Mar 18, 8:32 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	21 min
Mar 18, 8:43 PM MDT	Tornado Warning	LBF	Cherry	32 min
Mar 18, 9:05 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Logan, Thomas	40 min
Mar 18, 9:14 PM MDT	Tornado Warning	LBF	Cherry	16 min

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.