Alert archive / Nebraska / Red Flag Warnings in 2008

Red Flag Warning 8, NWS North Platte, NE

April 29, 200811 counties in Nebraska

NWS North Platte, NE issued this red flag warning at Apr 29, 2008, 2:15 AM MDT for 11 counties in Nebraska. It took effect at Apr 29, 2008, 1:00 PM MDT. It was in force for 76 min. 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 29, 2008, 2:15 AM MDT (08:15 UTC)
In effect from: Apr 29, 2008, 1:00 PM MDT
Expired: Apr 29, 2008, 2:16 PM MDT
In force: 76 min
Issued by: NWS North Platte, NE

Counties Arthur County, NE, Chase County, NE, Cherry County, NE, Deuel County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE, Sheridan County, NE

The radar

The North Platte radar (KLNX), 110 km from the middle of the area, began a volume at 08:19 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, 8.3 hours before the alert went out and 95 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: 2149 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 259 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.

000 
WWUS83 KLBF 290815
RFWLBF

RED FLAG WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
315 AM CDT TUE APR 29 2008

.CRITICAL FIRE WEATHER CONDITIONS ACROSS THE EASTERN PANHANDLE
AND FAR SOUTHWESTERN NEBRASKA.

.SURFACE LOW PRESSURE ALONG THE LEE OF THE ROCKIES...WILL CAUSE
SOUTHERLY SURFACE WINDS TO INCREASE ACROSS THE REGION THIS AFTERNOON.
THIS WILL FAVOR HIGH TEMPERATURES APPROACHING 80 DEGREES...WHICH
WILL RESULT IN LOW HUMIDITY VALUES OF 10 TO 15 PERCENT AND CRITICAL
FIRE WEATHER CONDITIONS.

NEZ204-210-292100-
/O.UPG.KLBF.FW.A.0003.080429T1800Z-080430T0000Z/
/O.NEW.KLBF.FW.W.0008.080429T1900Z-080430T0200Z/
EASTERN PANHANDLE/CRESCENT LAKE NWR-FRENCHMAN BASIN-
315 AM CDT TUE APR 29 2008 /215 AM MDT TUE APR 29 2008/

...RED FLAG WARNING IN EFFECT FROM 2 PM CDT /1 PM MDT/ THIS
AFTERNOON TO 9 PM CDT /8 PM MDT/ THIS EVENING...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A RED
FLAG WARNING...WHICH IS IN EFFECT FROM 2 PM CDT /1 PM MDT/ THIS
AFTERNOON TO 9 PM CDT /8 PM MDT/ THIS EVENING. THE FIRE WEATHER
WATCH IS NO LONGER IN EFFECT. 

RELATIVE HUMIDITY VALUES ARE EXPECTED TO RANGE FROM 10 TO 15 PERCENT 
ALONG AND WEST OF HIGHWAY 61. SOUTH TO SOUTHWEST WINDS ARE EXPECT
TO RANGE FROM 12 TO 15 MPH. HOWEVER...GUSTS WILL REACH 25 MPH AT
TIMES DURING THE LATE AFTERNOON AND EARLY EVENING...WHICH WOULD
ENHANCE THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH.|

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.

$$

KAR

1 follow-up statement

000 
WWUS83 KLBF 292016
RFWLBF

RED FLAG WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
316 PM CDT TUE APR 29 2008


NEZ204-210-292130-
/O.CAN.KLBF.FW.W.0008.000000T0000Z-080430T0200Z/
EASTERN PANHANDLE/CRESCENT LAKE NWR-FRENCHMAN BASIN-
316 PM CDT TUE APR 29 2008 /216 PM MDT TUE APR 29 2008/

...RED FLAG WARNING IS CANCELLED...

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

CRITICAL FIRE WEATHER CONDITIONS HAVE BEEN SLOW TO DEVELOP ACROSS
WESTERN NEBRASKA LATE THIS AFTERNOON. EASTERLY FLOW INTO SOUTHWEST
NEBRASKA AND THE SOUTHERN PANHANDLE HAVE KEPT RELATIVE HUMIDITY
LEVELS IN THE 30 TO 40 PERCENT RANGE. THESE READINGS MAY
TEMPORARILY DROP TO NEAR 20 PERCENT BY LATE AFTERNOON...BUT SHOULD
RECOVER THROUGH THE EARLY EVENING HOURS. ACROSS THE NORTHERN
PANHANDLE...RELATIVE HUMIDITY LEVELS HAVE LOWERED TO AROUND 20
PERCENT...BUT LIGHT WINDS NEAR THE SURFACE TROUGH HAVE KEPT WINDS
BELOW 25 MPH.

$$

13

Nearby

Red Flag Warnings in Nebraska, 2008 Every red flag warning in 2008

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.