Alert archive / Nebraska / Red Flag Warnings in 2021

Red Flag Warning 13, NWS Hastings, NE

April 8, 20215 counties in Nebraska; Phillips County, Rooks County, Kansas

NWS Hastings, NE issued this red flag warning at Apr 8, 2021, 2:38 AM CDT for 5 counties in Nebraska; Phillips County, Rooks County, Kansas. It took effect at Apr 8, 2021, 1:00 PM CDT. 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 8, 2021, 2:38 AM CDT (07:38 UTC)
In effect from
Apr 8, 2021, 1:00 PM CDT
Expired
Apr 8, 2021, 8:00 PM CDT
In force
7 hr
Issued by
NWS Hastings, NE

Counties Phillips County, KS, Rooks County, KS, Dawson County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Phelps County, NE

The radar

The Grand Island radar (KUEX), 97 km from the middle of the area, began a volume at 07:39 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, 7.6 hours before the alert went out and 135 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 00:00Z on 2021-04-08Temperature 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 00:00Z on 2021-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 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
1559 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

275 
WWUS83 KGID 080738
RFWGID

URGENT - FIRE WEATHER MESSAGE
National Weather Service Hastings NE
238 AM CDT Thu Apr 8 2021

KSZ005-017-NEZ060-072-073-082-083-081900-
/O.NEW.KGID.FW.W.0013.210408T1800Z-210409T0100Z/
Phillips-Rooks-Dawson-Gosper-Phelps-Furnas-Harlan-
238 AM CDT Thu Apr 8 2021

...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM
CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONES 005, 017, 060, 072, 073, 082 AND 083...

The National Weather Service in Hastings has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from 1 PM this afternoon to 8 PM CDT this evening.

* AFFECTED AREA...In Kansas, Fire Weather Zone 005 Phillips and 
  Fire Weather Zone 017 Rooks. In Nebraska, Fire Weather Zone 
  060 Dawson, Fire Weather Zone 072 Gosper, Fire Weather Zone 
  073 Phelps, Fire Weather Zone 082 Furnas and Fire Weather Zone 
  083 Harlan.

* WINDS...Northwest winds with sustained speeds of 15 to 25 mph
  with gusts near 30 mph are expected.

* RELATIVE HUMIDITY...Values as low as 18 percent are expected.

* IMPACTS...Any fires that ignite may spread rapidly and exhibit
  extreme fire behavior. Avoid any activities that could lead to 
  fire ignition.

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.

&&

$$
2 follow-up statements
080 
WWUS83 KGID 081757
RFWGID

URGENT - FIRE WEATHER MESSAGE
National Weather Service Hastings NE
1257 PM CDT Thu Apr 8 2021

...Critical Fire Weather Conditions Likely This Afternoon In
Western Parts of South Central Nebraska and North Central Kansas...

KSZ005-017-NEZ060-072-073-082-083-090100-
/O.CON.KGID.FW.W.0013.210408T1800Z-210409T0100Z/
Phillips-Rooks-Dawson-Gosper-Phelps-Furnas-Harlan-
1257 PM CDT Thu Apr 8 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 005,
017, 060, 072, 073, 082 AND 083...

* AFFECTED AREA...In Kansas, Fire Weather Zone 005 Phillips and 
  Fire Weather Zone 017 Rooks. In Nebraska, Fire Weather Zone 
  060 Dawson, Fire Weather Zone 072 Gosper, Fire Weather Zone 
  073 Phelps, Fire Weather Zone 082 Furnas and Fire Weather Zone 
  083 Harlan.

* WINDS...From the northwest, generally sustained 10 to 20 MPH and
  gusting up to around 30 MPH. 

* RELATIVE HUMIDITY...As low as 15 to 20 percent. 

* IMPACTS...Any fires that ignite could be difficult to control.
  Use extreme caution if engaging in any activities that could
  start 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 can
contribute to extreme fire behavior.

&&

$$

Pfannkuch
054 
WWUS83 KGID 090056
RFWGID

URGENT - FIRE WEATHER MESSAGE
National Weather Service Hastings NE
756 PM CDT Thu Apr 8 2021

KSZ005-017-NEZ060-072-073-082-083-090200-
/O.EXP.KGID.FW.W.0013.000000T0000Z-210409T0100Z/
Phillips-Rooks-Dawson-Gosper-Phelps-Furnas-Harlan-
756 PM CDT Thu Apr 8 2021

...RED FLAG WARNING WILL EXPIRE AT 8 PM CDT THIS EVENING FOR WIND
AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 005, 017, 060,
072, 073, 082 AND 083...

Wind speeds continue to decrease and humidity is increasing this
evening, therefore the Red Flag Warning is allowed to expire as
planned.

$$

Heinlein

Nearby

Red Flag Warnings in Nebraska, 2021Red Flag Warnings in Kansas, 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.