Alert archive / Nebraska / Red Flag Warnings in 2021

Red Flag Warning 4, NWS North Platte, NE

April 1, 202112 counties in Nebraska

NWS North Platte, NE issued this red flag warning at Apr 1, 2021, 1:48 PM MDT for 12 counties in Nebraska. It took effect at Apr 2, 2021, 11:00 AM MDT. It was in force for 8 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 1, 2021, 1:48 PM MDT (19:48 UTC)
In effect from
Apr 2, 2021, 11:00 AM MDT
Expired
Apr 2, 2021, 7:00 PM MDT
In force
8 hr
Issued by
NWS North Platte, NE

Counties Arthur County, NE, Cherry County, NE, Custer County, NE, Deuel County, NE, Garden County, NE, Garfield County, NE, Grant County, NE, Holt County, NE, Keith County, NE, Loup County, NE, Sheridan County, NE, Wheeler County, NE

The radar

The North Platte radar (KLNX), 19 km from the middle of the area, began a volume at 19:48 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 12:00Z, 7.8 hours before the alert went out and 79 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 12:00Z on 2021-04-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2021-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 228 square meters per square second.193958Sfc1 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
2395 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
228 m²/s²
0-3 km storm-relative helicity
361 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

619 
WWUS83 KLBF 011948
RFWLBF

URGENT - FIRE WEATHER MESSAGE
National Weather Service North Platte NE
248 PM CDT Thu Apr 1 2021

...CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON AND EVENING AND
AGAIN FRIDAY AFTERNOON AND EVENING...

.Windy and dry conditions will result in critical fire weather 
conditions for the remainder of this afternoon and evening. Gusty
south to southwest winds will be sustained at 15 to 25 mph with 
gust to around 30 mph. The Red Flag Warning is for fire zones 204 
and 208, where low humidity and gusty winds will exist. A Red Flag
Warning is also in effect Friday afternoon and evening across fire
zone 204, where west to northwest winds will be sustained at 15 to
25 mph with gusts to 30 mph.

NEZ204-021000-
/O.NEW.KLBF.FW.W.0004.210402T1700Z-210403T0100Z/
/O.CON.KLBF.FW.W.0003.000000T0000Z-210402T0200Z/
Eastern Panhandle/Crescent Lake NWR-
148 PM MDT Thu Apr 1 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EASTERN PANHANDLE AND
NORTHERN SANDHILLS...
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR THE EASTERN PANHANDLE...

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 to 7 PM MDT Friday.

* Affected Area...In NEZ204...Fire Weather Zone 204 Eastern 
  Panhandle/Crescent Lake NWR.

* Winds...Southwest 15 to 25 mph with gusts up to 30 mph.

* Relative Humidity...As low as 13 percent.

* Impacts...Any fire start will be capable of spreading 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 can
contribute to extreme fire behavior.

&&

$$

NEZ208-020200-
/O.CON.KLBF.FW.W.0003.000000T0000Z-210402T0200Z/
Niobrara Valley/Fort Niobrara NWR/Samuel R McKelvie National
Forest-
248 PM CDT Thu Apr 1 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EASTERN PANHANDLE AND
NORTHERN SANDHILLS...

* Affected Area...In NEZ208...Fire Weather Zone 208 Niobrara 
  Valley/Fort Niobrara NWR/Samuel R McKelvie National Forest.

* Winds...South 15 to 25 mph with gusts up to 30 mph.

* Relative Humidity...As low as 15 percent.

* Impacts...Any fire start will be capable of spreading 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 can
contribute to extreme fire behavior.

&&

$$

http://weather.gov/LBF
2 follow-up statements
848 
WWUS83 KLBF 020810
RFWLBF

URGENT - FIRE WEATHER MESSAGE
National Weather Service North Platte NE
310 AM CDT Fri Apr 2 2021

NEZ209-030000-
/O.EXA.KLBF.FW.W.0004.210402T1700Z-210403T0100Z/
Loup Rivers Basin-
310 AM CDT Fri Apr 2 2021

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF 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 noon today to 8 PM CDT this evening.

* Affected Area...In NEZ209...Fire Weather Zone 209 Loup Rivers 
  Basin.

* Winds...South 10 to 20 mph with gusts up to 30 mph.

* Relative Humidity...As low as 17 percent.

* Impacts...Any fire start will be capable of spreading rapidly
  and exhibiting erratic behavior.

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.

&&

$$

NEZ204-030000-
/O.CON.KLBF.FW.W.0004.210402T1700Z-210403T0100Z/
Eastern Panhandle/Crescent Lake NWR-
210 AM MDT Fri Apr 2 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE
EASTERN PANHANDLE...

* Affected Area...In NEZ204...Fire Weather Zone 204 Eastern 
  Panhandle/Crescent Lake NWR.

* Winds...Northwest 10 to 20 mph with gusts up to 25 mph.

* Relative Humidity...As low as 11 percent.

* Impacts...Any fire start will be capable of spreading rapidly
  and exhibiting erratic behavior.

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.

&&

$$

http://weather.gov/LBF
614 
WWUS83 KLBF 021553
RFWLBF

URGENT - FIRE WEATHER MESSAGE
National Weather Service North Platte NE
1053 AM CDT Fri Apr 2 2021

NEZ204-209-030100-
/O.CON.KLBF.FW.W.0004.210402T1700Z-210403T0100Z/
Eastern Panhandle/Crescent Lake NWR-Loup Rivers Basin-
1053 AM CDT Fri Apr 2 2021 /953 AM MDT Fri Apr 2 2021/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT /7 PM MDT/
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF
NORTH CENTRAL NEBRASKA...

* Affected Area...In NEZ204...Fire Weather Zone 204 Eastern 
  Panhandle/Crescent Lake NWR. In NEZ209...Fire Weather Zone 209 
  Loup Rivers Basin.

* Winds...In zone 204, northwest winds 10 to 20 mph with
  occasional gusts up to 25 mph. In zone 209, southwest winds 10 
  to 20 mph with gusts up to 26 mph.

* Relative Humidity...As low as 11 percent.

* Impacts...Any fire start will be capable of spreading rapidly 
  and exhibiting erratic behavior.

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.

&&

$$

http://weather.gov/LBF

Nearby

Red Flag Warnings in Nebraska, 2021Every red flag warning in 2021

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.