Alert archive / Nebraska / Red Flag Warnings in 2012
Red Flag Warning 52, NWS North Platte, NE
NWS North Platte, NE issued this red flag warning at Nov 21, 2012, 12:40 PM MST for 7 counties in Nebraska. 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
- Nov 21, 2012, 12:40 PM MST (19:40 UTC)
- Expired
- Nov 21, 2012, 7:00 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 19:44 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, 7.7 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
- 3143 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
565 WWUS83 KLBF 211940 RFWLBF URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE NORTH PLATTE NE 140 PM CST WED NOV 21 2012 ...RED FLAG WARNING FOR LOW RELATIVE HUMIDITY AND GUSTY WINDS... .LOW PRESSURE DEEPENING ACROSS THE NORTHERN PLAINS HAS INCREASED WINDS ACROSS THE EASTERN PANHANDLE THIS AFTERNOON. IN ADDITION...VERY DRY AIR IS IN PLACE ACROSS THE REGION LEADING TO CRITICALLY LOW RELATIVE HUMIDITY VALUES. NEZ204-220200- /O.NEW.KLBF.FW.W.0052.121121T1940Z-121122T0200Z/ EASTERN PANHANDLE/CRESCENT LAKE NWR- 1240 PM MST WED NOV 21 2012 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM MST THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE EASTERN PANHANDLE INCLUDING CRESCENT LAKE WILDLIFE REFUGE... THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT UNTIL 7 PM MST THIS EVENING. * AFFECTED AREA...IN NEBRASKA...FIRE WEATHER ZONE 204 EASTERN PANHANDLE/CRESCENT LAKE NWR. * WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 25 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT. * IMPACTS...DANGEROUS FIRE GROWTH POTENTIAL. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/LBF
2 follow-up statements
692 WWUS83 KLBF 220135 RFWLBF URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE NORTH PLATTE NE 735 PM CST WED NOV 21 2012 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MST THIS EVENING... NEZ204-220245- /O.EXP.KLBF.FW.W.0052.000000T0000Z-121122T0200Z/ EASTERN PANHANDLE/CRESCENT LAKE NWR- 635 PM MST WED NOV 21 2012 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MST THIS EVENING... WINDS HAVE DIMINISHED AND RELATIVE HUMIDITY IS INCREASING...SO THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 7 PM MDT. $$ TAYLOR HTTP://WEATHER.GOV/LBF
161 WWUS83 KLBF 220141 RFWLBF URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE NORTH PLATTE NE 741 PM CST WED NOV 21 2012 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MST THIS EVENING ... NEZ204-220245- /O.EXP.KLBF.FW.W.0052.000000T0000Z-121122T0200Z/ EASTERN PANHANDLE/CRESCENT LAKE NWR- 641 PM MST WED NOV 21 2012 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MST THIS EVENING FOR FIRE WEATHER ZONE 204... WINDS HAVE DIMINISHED AND RELATIVE HUMIDITY HAS INCREASED...SO THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE. $$ HTTP://WEATHER.GOV/LBF
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 21, 2:38 PM MST | Wind Advisory | LBF | Arthur, Blaine, Boyd, Brown, Chase, Cherry and 20 more | 30 hr |
Nearby
Red Flag Warnings in Nebraska, 2012Every red flag warning in 2012
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.