Alert archive / Nebraska / Red Flag Warnings in 2021
Red Flag Warning 13, NWS North Platte, NE
NWS North Platte, NE issued this red flag warning at Dec 21, 2021, 1:21 PM MST for 7 counties in Nebraska. It took effect at Dec 22, 2021, 11:00 AM MST. It was in force for 6 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
- Dec 21, 2021, 1:21 PM MST (20:21 UTC)
- In effect from
- Dec 22, 2021, 11:00 AM MST
- Expired
- Dec 22, 2021, 5:00 PM MST
- In force
- 6 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 20:20 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, 8.4 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2914 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 402 m²/s²
- 0-3 km storm-relative helicity
- 410 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
924 WWUS83 KLBF 212021 RFWLBF URGENT - FIRE WEATHER MESSAGE National Weather Service North Platte NE 221 PM CST Tue Dec 21 2021 NEZ204-221030- /O.NEW.KLBF.FW.W.0013.211222T1800Z-211223T0000Z/ Eastern Panhandle/Crescent Lake NWR- 121 PM MST Tue Dec 21 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 5 PM MST WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF WESTERN 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 to 5 PM MST Wednesday. * Affected Area...In NEZ204...Fire Weather Zone 204 Eastern Panhandle/Crescent Lake NWR. * Winds...West 10 to 20 mph with gusts up to 30 mph. * Relative Humidity...As low as 14 percent. * Impacts...Any fire start will likely spread rapidly and could be difficult to control. 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. && $$ http://weather.gov/LBF
2 follow-up statements
503 WWUS83 KLBF 220837 RFWLBF URGENT - FIRE WEATHER MESSAGE National Weather Service North Platte NE 237 AM CST Wed Dec 22 2021 NEZ204-222245- /O.CON.KLBF.FW.W.0013.211222T1800Z-211223T0000Z/ Eastern Panhandle/Crescent Lake NWR- 137 AM MST Wed Dec 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 5 PM MST THIS AFTERNOON FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF WESTERN NEBRASKA... * Affected Area...In NEZ204...Fire Weather Zone 204 Eastern Panhandle/Crescent Lake NWR. * Winds...West 10 to 15 mph with gusts up to 25 mph. * Relative Humidity...As low as 14 percent. * Impacts...Any fire start will likely spread rapidly and could be difficult to control. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ http://weather.gov/LBF
382 WWUS83 KLBF 230015 RFWLBF URGENT - FIRE WEATHER MESSAGE National Weather Service North Platte NE 615 PM CST Wed Dec 22 2021 NEZ204-230115- /O.EXP.KLBF.FW.W.0013.000000T0000Z-211223T0000Z/ Eastern Panhandle/Crescent Lake NWR- 515 PM MST Wed Dec 22 2021 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF WESTERN NEBRASKA... Light winds and cool temperatures after sunset have resulted in improving relative humidity. Therefore the Red Flag Warning has expired. $$ 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.