Alert archive / Nebraska / Red Flag Warnings in 2021
Red Flag Warning 4, NWS Omaha, NE
NWS Omaha, NE issued this red flag warning at Mar 30, 2021, 3:38 AM CDT for 30 counties in Nebraska; 8 counties in Iowa. It took effect at Mar 30, 2021, 12:00 PM CDT. 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
- Mar 30, 2021, 3:38 AM CDT (08:38 UTC)
- In effect from
- Mar 30, 2021, 12:00 PM CDT
- Expired
- Mar 30, 2021, 8:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Omaha, NE
All 38 counties
Fremont County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Shelby County, IA, Antelope County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Knox County, NE, Lancaster County, NE, Madison County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Pierce County, NE, Platte County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 8.6 hours before the alert went out and 16 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
- 2720 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 200 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
275 WWUS83 KOAX 300838 RFWOAX URGENT - FIRE WEATHER MESSAGE National Weather Service Omaha/Valley NE 338 AM CDT Tue Mar 30 2021 NEZ011-012-016-017-030-031-301645- /O.UPG.KOAX.FW.A.0002.210330T1700Z-210331T0100Z/ /O.NEW.KOAX.FW.W.0004.210330T1700Z-210331T0100Z/ Knox-Cedar-Antelope-Pierce-Boone-Madison- 338 AM CDT Tue Mar 30 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF NORTHEAST NEBRASKA... The National Weather Service in Omaha/Valley 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. The Fire Weather Watch is no longer in effect. * Affected Area...In Nebraska, Knox, Cedar, Antelope, Pierce, Boone and Madison. * Winds...Northwest 20 to 25 mph with gusts up to 35 mph. * Relative Humidity...As low as 20 percent. * Impacts...Any fires that ignite may spread rapidly and exhibit extreme fire 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. && $$ NEZ018-032-042-301645- /O.NEW.KOAX.FW.W.0004.210330T1700Z-210331T0100Z/ Wayne-Stanton-Platte- 338 AM CDT Tue Mar 30 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF NORTHEAST NEBRASKA... The National Weather Service in Omaha/Valley has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon today to 8 PM CDT this evening. * Affected Area...In Nebraska, Wayne, Stanton and Platte. * Winds...Northwest 15 to 25 mph with gusts up to 35 mph. * Relative Humidity...As low as 20 percent. * Impacts...Any fires that ignite may spread rapidly and exhibit extreme fire behavior. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures can contribute to extreme fire behavior. && $$
4 follow-up statements
582 WWUS83 KOAX 301505 RFWOAX URGENT - FIRE WEATHER MESSAGE National Weather Service Omaha/Valley NE 1005 AM CDT Tue Mar 30 2021 IAZ043-055-056-069-NEZ015-033-034-043>045-050>053-302315- /O.EXA.KOAX.FW.W.0004.210330T1700Z-210331T0100Z/ Monona-Harrison-Shelby-Pottawattamie-Thurston-Cuming-Burt-Colfax- Dodge-Washington-Butler-Saunders-Douglas-Sarpy- 1005 AM CDT Tue Mar 30 2021 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF NORTHEAST NEBRASKA... The National Weather Service in Omaha/Valley has issued a Red Flag Warning, which is in effect until 8 PM CDT this evening. * Affected Area...In Nebraska, Knox, Cedar, Antelope, Pierce, Boone and Madison. * Winds...Northwest 20 to 25 mph with gusts up to 35 mph. * Relative Humidity...As low as 15 percent. * Impacts...Any fires that ignite may spread rapidly and exhibit extreme fire 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. && $$ NEZ011-012-016>018-030>032-042-302315- /O.CON.KOAX.FW.W.0004.210330T1700Z-210331T0100Z/ Knox-Cedar-Antelope-Pierce-Wayne-Boone-Madison-Stanton-Platte- 1005 AM CDT Tue Mar 30 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF NORTHEAST NEBRASKA... * Affected Area...In Nebraska, Wayne, Stanton and Platte. * Winds...Northwest 15 to 25 mph with gusts up to 35 mph. * Relative Humidity...As low as 15 percent. * Impacts...Any fires that ignite may spread rapidly and exhibit extreme fire behavior. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures can contribute to extreme fire behavior. && $$
837 WWUS83 KOAX 302041 RFWOAX URGENT - FIRE WEATHER MESSAGE National Weather Service Omaha/Valley NE 341 PM CDT Tue Mar 30 2021 IAZ043-055-056-069-NEZ011-012-015>018-030>034-042>045-050>053- 310100- /O.CON.KOAX.FW.W.0004.000000T0000Z-210331T0100Z/ Monona-Harrison-Shelby-Pottawattamie-Knox-Cedar-Thurston-Antelope- Pierce-Wayne-Boone-Madison-Stanton-Cuming-Burt-Platte-Colfax- Dodge-Washington-Butler-Saunders-Douglas-Sarpy- 341 PM CDT Tue Mar 30 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST NEBRASKA AND WESTERN IOWA. * Affected Area...Northeast Nebraska and Monona, Harrison, Shelby, and Pottawattamie Counties in western Iowa. * Winds...Northwest 20 to 25 mph with gusts up to 35 mph. * Relative Humidity...As low as 15 percent. * Impacts...Any fires that ignite may spread rapidly and exhibit extreme fire 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. && $$
951 WWUS83 KOAX 302109 RFWOAX URGENT - FIRE WEATHER MESSAGE National Weather Service Omaha/Valley NE 409 PM CDT Tue Mar 30 2021 IAZ079-080-090-091-NEZ065>068-078-088>093-310100- /O.EXA.KOAX.FW.W.0004.000000T0000Z-210331T0100Z/ Mills-Montgomery-Fremont-Page-Seward-Lancaster-Cass-Otoe-Saline- Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson- 409 PM CDT Tue Mar 30 2021 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... The National Weather Service in Omaha/Valley has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 8 PM CDT this evening. * Affected Area...In Iowa, Mills, Montgomery, Fremont and Page. In Nebraska, Seward, Lancaster, Cass, Otoe, Saline, Jefferson, Gage, Johnson, Nemaha, Pawnee and Richardson. * Winds...North or northwest 15 to 25 mph with gusts to 35 mph. * Relative Humidity...As low as 15 to 20 percent. * Impacts...Any fires that ignite may spread rapidly and exhibit extreme fire behavior. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures can contribute to extreme fire behavior. && $$ IAZ043-055-056-069-NEZ011-012-015>018-030>034-042>045-050>053- 310100- /O.CON.KOAX.FW.W.0004.000000T0000Z-210331T0100Z/ Monona-Harrison-Shelby-Pottawattamie-Knox-Cedar-Thurston-Antelope- Pierce-Wayne-Boone-Madison-Stanton-Cuming-Burt-Platte-Colfax- Dodge-Washington-Butler-Saunders-Douglas-Sarpy- 409 PM CDT Tue Mar 30 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... * Affected Area...In Iowa, Monona, Harrison, Shelby and Pottawattamie. In Nebraska, Knox, Cedar, Thurston, Antelope, Pierce, Wayne, Boone, Madison, Stanton, Cuming, Burt, Platte, Colfax, Dodge, Washington, Butler, Saunders, Douglas and Sarpy. * Winds...North or northwest 15 to 25 mph with gusts to 35 mph. * Relative Humidity...As low as 15 to 25 percent. * Impacts...Any fires that ignite may spread rapidly and exhibit extreme fire 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. && $$
369 WWUS83 KOAX 310105 RFWOAX URGENT - FIRE WEATHER MESSAGE National Weather Service Omaha/Valley NE 805 PM CDT Tue Mar 30 2021 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-310215- /O.EXP.KOAX.FW.W.0004.000000T0000Z-210331T0100Z/ Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont- Page-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison- Stanton-Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler- Saunders-Douglas-Sarpy-Seward-Lancaster-Cass-Otoe-Saline- Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson- 805 PM CDT Tue Mar 30 2021 ...RED FLAG WARNING HAS EXPIRED... Winds have diminished across the area and relative humidity values are beginning to recover. For these reasons...the Red Flag warning has been allowed to expire. $$
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 9:42 PM CDT | Fire Weather Watch | OAX | Antelope, Boone, Cedar, Knox, Madison, Pierce | 6 hr |
Nearby
Red Flag Warnings in Nebraska, 2021Red Flag Warnings in Iowa, 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.