Alert archive / Iowa / Red Flag Warnings in 2020
Red Flag Warning 3, NWS Des Moines, IA
NWS Des Moines, IA issued this red flag warning at Oct 14, 2020, 3:43 AM CDT for 14 counties in Iowa. It took effect at Oct 14, 2020, 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
- Oct 14, 2020, 3:43 AM CDT (08:43 UTC)
- In effect from
- Oct 14, 2020, 1:00 PM CDT
- Expired
- Oct 14, 2020, 8:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Des Moines, IA
Counties Audubon County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Crawford County, IA, Emmet County, IA, Greene County, IA, Guthrie County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Webster County, IA
The radar
The Des Moines radar (KDMX), 106 km from the middle of the area, began a volume at 08:50 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
Omaha, NE (KOAX), launched 00:00Z, 8.7 hours before the alert went out and 183 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
- 2517 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
862 WWUS83 KDMX 140843 RFWDMX URGENT - FIRE WEATHER MESSAGE National Weather Service Des Moines IA Issued by National Weather Service Quad Cities IA IL 343 AM CDT Wed Oct 14 2020 ...Critical Fire Danger Today... .Strong winds and low relative humidity this afternoon will result in rapid spread of any fires that start, and the potential for uncontrollable fires. IAZ004-005-015-023-024-033>035-044-045-141645- /O.UPG.KDMX.FW.A.0003.201014T1800Z-201015T0000Z/ /O.NEW.KDMX.FW.W.0003.201014T1800Z-201015T0100Z/ Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster- Crawford-Carroll- 343 AM CDT Wed Oct 14 2020 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM CDT THIS EVENING FOR CRITICAL FIRE DANGER... The National Weather Service in the Des Moines has issued a Red Flag Warning for strong winds and dry conditions...which is in effect from 1 PM this afternoon to 8 PM CDT this evening. The Fire Weather Watch is no longer in effect. * TIMING...This afternoon and early evening. * WIND...From the northwest at 20 to 30 mph, gusting to 45 mph. * Relative Humidity...as low as 25 percent. * FUEL...grasslands and crops across the area are mostly cured and able to burn easily. * Impacts...Any fires that start this afternoon may spread rapidly and become uncontrollable. 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. && $$ IAZ046-057-058-070-141645- /O.NEW.KDMX.FW.W.0003.201014T1800Z-201015T0100Z/ Greene-Audubon-Guthrie-Cass- 343 AM CDT Wed Oct 14 2020 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM CDT THIS EVENING FOR CRITICAL FIRE DANGER... The National Weather Service in the Des Moines has issued a Red Flag Warning for strong winds and dry conditions...which is in effect from 1 PM this afternoon to 8 PM CDT this evening. The Fire Weather Watch is no longer in effect. * TIMING...This afternoon and early evening. * WIND...From the northwest at 20 to 30 mph, gusting to 45 mph. * Relative Humidity...as low as 25 percent. * FUEL...grasslands and crops across the area are mostly cured and able to burn easily. * Impacts...Any fires that start this afternoon may spread rapidly and become uncontrollable. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ RP Kinney
4 follow-up statements
225 WWUS83 KDMX 141612 RFWDMX URGENT - FIRE WEATHER MESSAGE National Weather Service Des Moines IA Issued by National Weather Service Quad Cities IA IL 1112 AM CDT Wed Oct 14 2020 ...CRITICAL FIRE DANGER TODAY... .Strong winds and low relative humidity this afternoon will result in rapid spread of any fires that start, and the potential for uncontrollable fires. IAZ004-005-015-023-024-033>035-044>046-057-058-070-150015- /O.CON.KDMX.FW.W.0003.201014T1800Z-201015T0100Z/ Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster- Crawford-Carroll-Greene-Audubon-Guthrie-Cass- 1112 AM CDT Wed Oct 14 2020 ...RED FLAG WARNING IN EFFECT FROM 1PM THIS AFTERNOON TO 8 PM CDT THIS EVENING FOR EXTREME FIRE CONDITIONS.... * TIMING...This afternoon and early evening. * WIND...From the west at 20 to 30 mph, gusting to 45 mph. Winds changing to the northwest after 5 pm. * Relative Humidity...as low as 25 percent. * FUEL...grasslands and crops across the area are mostly cured and able to burn easily. * Impacts...Any fires that start this afternoon may spread rapidly and become uncontrollable. 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. && $$ DLS
440 WWUS83 KDMX 142043 RFWDMX URGENT - FIRE WEATHER MESSAGE National Weather Service Des Moines IA Issued by National Weather Service Quad Cities IA IL 343 PM CDT Wed Oct 14 2020 ...CRITICAL FIRE DANGER TODAY... .Strong winds and low relative humidity this afternoon and early evening will result in rapid spread of any fires that start, and the potential for uncontrollable fires. IAZ004-005-015-023-024-033>035-044>046-057-058-070-150100- /O.CON.KDMX.FW.W.0003.000000T0000Z-201015T0100Z/ Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster- Crawford-Carroll-Greene-Audubon-Guthrie-Cass- 343 PM CDT Wed Oct 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR EXTREME FIRE CONDITIONS... * TIMING...This afternoon and early evening. * WIND...From the west at 20 to 30 mph, gusting to 45 mph. Winds changing to the northwest after 5 pm. * Relative Humidity...as low as 25 percent. * FUEL...grasslands and crops across the area are mostly cured and able to burn easily. * Impacts...Any fires that start this afternoon may spread rapidly and become uncontrollable. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ DLS
739 WWUS83 KDMX 150011 RFWDMX URGENT - FIRE WEATHER MESSAGE National Weather Service Des Moines IA Issued by National Weather Service Quad Cities IA IL 711 PM CDT Wed Oct 14 2020 ...CRITICAL FIRE DANGER TODAY... .Strong winds and low relative humidity this afternoon and early evening will result in rapid spread of any fires that start, and the potential for uncontrollable fires. IAZ004-005-015-023-024-033>035-044>046-057-058-070-150115- /O.CON.KDMX.FW.W.0003.000000T0000Z-201015T0100Z/ Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster- Crawford-Carroll-Greene-Audubon-Guthrie-Cass- 711 PM CDT Wed Oct 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR EXTREME FIRE CONDITIONS|... * TIMING...This afternoon and early evening. * WIND...From the west at 20 to 30 mph, gusting to 45 mph. Winds changing to the northwest after 5 pm. * Relative Humidity...as low as 24 percent. * FUEL...grasslands and crops across the area are mostly cured and able to burn easily. * Impacts...Any fires that start this afternoon may spread rapidly and become uncontrollable. 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. && $$ DC
294 WWUS83 KDMX 150059 RFWDMX URGENT - FIRE WEATHER MESSAGE National Weather Service Des Moines IA Issued by National Weather Service Quad Cities IA IL 759 PM CDT Wed Oct 14 2020 IAZ004-005-015-023-024-033>035-044>046-057-058-070-150200- /O.EXP.KDMX.FW.W.0003.000000T0000Z-201015T0100Z/ Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster- Crawford-Carroll-Greene-Audubon-Guthrie-Cass- 759 PM CDT Wed Oct 14 2020 ...RED FLAG WARNING WILL EXPIRE AT 8 PM CDT THIS EVENING FOR EXTREME FIRE CONDITIONS... Relative humidities are increasing this evening with the loss of daytime heating. Therefore, the Red Flag Warning will be allowed to expire. Winds will remain breezy this evening especially in north central Iowa where gusts up to 45 MPH are possible. $$ DC
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this red flag warning went out at Oct 14, 3:33 AM CDT, 10 minutes earlier.
Area forecast discussion, Oct 14, 3:33 AM CDT, 10 minutes before
AREA FORECAST DISCUSSION National Weather Service Des Moines IA Issued by National Weather Service Quad Cities IA IL 333 AM CDT Wed Oct 14 2020 .DISCUSSION..(Today through Tuesday) ISSUED AT 304 AM CDT Wed Oct14 2020 Key Messages: 1) Critical fire weather conditions today 2) Turning cooler for the rest of the week 3) Widespread frost/freeze expected across much of the area Thursday night Fire weather: Numerous forecast issues on the table for the next week. First and foremost, critical fire weather conditions are expected today west of Interstate 35. Grasslands and crops in this area are mostly cured, and coupled with a strong northwest wind gusting to 45 mph and afternoon RH values around 25 percent, will result in rapid fire spread Have issued a Red Flag Warning for this afternoon and early evening, along and west of a line from Algona, to Fort Dodge and Atlantic, where the most extreme conditions exist. Elsewhere across the forecast area, conditions will not be as critical due to lesser curing of grasslands, but cured crops will still be very susceptible to rapid fire spread. Temperatures: Looking ahead, colder air will overspread the region tonight into Thursday, and persist for much of the period. The exception will be a brief temp rebound on Saturday. Widespread frost is expected Thursday night, with low in the upper 20s to low 30s. Sunday and Monday look to be the coldest days of the periods, with highs mainly in the 40s and lows in the 20s to low 30s. Precipitation: Cannot completely discount a few sprinkles or a stray shower this afternoon/tonight with the fropa, but will leave to later shifts to re-assess for potential low pops. For Friday night/Saturday, a weak wave will skirt northern Iowa, with potential for some light rain and perhaps some snowflakes mixed in. Will also carry low chance pops from Saturday night through Monday, although there is still considerable model uncertainty in this period. && .AVIATION...(For the 06Z TAFS through 06Z Wednesday Night) ISSUED AT 1218 AM CDT Wed Oct 14 2020 The main focus of the 06z TAF issuance continues to be gusty winds and LLWS. Southerly winds will increase after 11z at the surface and aloft ahead of a cold front pushing through the Plains. Have target a window from 11Z-16Z for LLWS. Winds will veer to westerly and eventually northwest through the afternoon with gusts of 25-30 kts. && .DMX WATCHES/WARNINGS/ADVISORIES... Red Flag Warning from 1 PM this afternoon to 8 PM CDT this evening for Audubon-Calhoun-Carroll-Cass-Crawford-Emmet-Greene- Guthrie-Humboldt-Kossuth-Palo Alto-Pocahontas-Sac-Webster. && DISCUSSION...RP Kinney AVIATION...RP Kinney
Hazardous weather outlook, Oct 13, 6:47 PM CDT, 8 hours 56 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA Issued by National Weather Service Quad Cities IA IL 647 PM CDT Tue Oct 13 2020 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075- 081>086-092>097-150000- Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene- Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper- Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union- Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne- Appanoose-Davis- 647 PM CDT Tue Oct 13 2020 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday An elevated fire risk will be seen Wednesday afternoon, especially west of Interstate 35, where the combination of gusty winds of 30 to 40 mph and relative humidity levels of 20 to 30 percent will lead to high fire danger. Frost and near freezing temperatures may threaten susceptible vegetation over southern and east central Iowa Thursday night. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today and tonight.
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 14, 1:39 PM CDT | Wind Advisory | DMX | Bremer, Butler, Cerro Gordo, Emmet, Franklin, Hancock and 5 more | 10 hr |
Nearby
Red Flag Warnings in Iowa, 2020Every red flag warning in 2020
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.