Alert archive / Nebraska / Red Flag Warnings in 2017

Red Flag Warning 7, NWS North Platte, NE

April 7, 20177 counties in Nebraska

NWS North Platte, NE issued this red flag warning at Apr 7, 2017, 2:59 AM MDT for 7 counties in Nebraska. It took effect at Apr 7, 2017, 12:00 PM 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: Apr 7, 2017, 2:59 AM MDT (08:59 UTC)
In effect from: Apr 7, 2017, 12:00 PM MDT
Expired: Apr 7, 2017, 7:26 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 08:59 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 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2635 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

928 
WWUS83 KLBF 070859
RFWLBF

URGENT - FIRE WEATHER MESSAGE
National Weather Service North Platte NE
359 AM CDT Fri Apr 7 2017

...Range Fire Potential This Afternoon Across Western Nebraska...

.Critical fire conditions are expected this afternoon across the 
eastern panhandle and western Sandhills. Relative humidity falls 
to around 15 percent and wind gusts to 25 and 30 mph should be 
common.

NEZ204-071700-
/O.UPG.KLBF.FW.A.0005.170407T1800Z-170408T0200Z/
/O.NEW.KLBF.FW.W.0007.170407T1800Z-170408T0200Z/
Eastern Panhandle/Crescent Lake NWR-
259 AM MDT Fri Apr 7 2017

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING FOR WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 204...

The National Weather Service in North Platte has issued a Red
Flag Warning, which is in effect from noon today to 8 PM MDT this
evening. The Fire Weather Watch is no longer in effect. 

* Affected Area...Fire weather zone 204.

* Winds...Southwest winds 15 to 20 mph with gusts to 30 mph.

* Relative Humidity...Humidity falls to around 15 percent.

* Impacts...Any fires that develop will likely spread rapidly.
  Outdoor burning is not recommended. 

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 can
contribute to extreme fire behavior.

&&

$$

NWS

1 follow-up statement

492 
WWUS83 KLBF 080126 AAA
RFWLBF

URGENT - FIRE WEATHER MESSAGE...UPDATED
National Weather Service North Platte NE
826 PM CDT Fri Apr 7 2017

NEZ204-080230-
/O.CAN.KLBF.FW.W.0007.000000T0000Z-170408T0200Z/
Eastern Panhandle/Crescent Lake NWR-
726 PM MDT Fri Apr 7 2017

...RED FLAG WARNING IS CANCELLED FOR LOW RELATIVE HUMIDITY AND
STRONG WINDS FOR FIRE WEATHER ZONE 204...

The National Weather Service in North Platte has cancelled the
Red Flag Warning. 

Winds speeds have become light at less than 10 mph. Humidity is 
increasing reducing the potential for the spread range fires.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 6, 8:14 PM MDT	Fire Weather Watch	LBF	Arthur, Cherry, Deuel, Garden, Grant, Keith and 1 more	7 hr

Nearby

Red Flag Warnings in Nebraska, 2017 Every red flag warning in 2017

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.