Alert archive / Iowa / Red Flag Warnings in 2017
Red Flag Warning 2, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this red flag warning at Mar 7, 2017, 3:45 AM CST for 11 counties in Iowa. It took effect at Mar 7, 2017, 1:00 PM CST. It was in force for 5 hr. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 7, 2017, 3:45 AM CST (09:45 UTC)
- In effect from
- Mar 7, 2017, 1:00 PM CST
- Expired
- Mar 7, 2017, 6:00 PM CST
- In force
- 5 hr
- Issued by
- NWS Sioux Falls, SD
Counties Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Ida County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sioux County, IA, Woodbury County, IA
The radar
The Sioux Falls radar (KFSD), 111 km from the middle of the area, began a volume at 09:45 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 7, 3:30 PM CST | NON-TSTM WND GST 56 | 3 Sse Lake Park, IA | MESONET STATION 3 SSE LAKE PARK /AS497/. |
| Mar 7, 4:35 PM CST | NON-TSTM WND GST 52 | 4 Wsw Lakeside, IA | AWOS STATION STORM LAKE AIRPORT /SLB/. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 9.8 hours before the alert went out and 189 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
- 2603 m above ground
- 0-6 km bulk shear
- 105 kt
- 0-1 km storm-relative helicity
- -227 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
206 WWUS83 KFSD 070945 RFWFSD URGENT - FIRE WEATHER MESSAGE National Weather Service Sioux Falls SD 345 AM CST Tue Mar 7 2017 ...Red Flag Warning this afternoon for extreme southeast South Dakota, extreme northeast Nebraska, and northwest Iowa for very strong winds and low humidity... IAZ001>003-012>014-020>022-031-032-NEZ249-SDZ258-071745- /O.UPG.KFSD.FW.A.0001.170307T1900Z-170308T0000Z/ /O.NEW.KFSD.FW.W.0002.170307T1900Z-170308T0000Z/ Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Plymouth-Cherokee- Buena Vista-Woodbury-Ida-Extreme Northeast Nebraska- Lower James River To Lower Big Sioux River Valley- 345 AM CST Tue Mar 7 2017 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM CST THIS EVENING FOR strong winds and low humidity FOR FIRE WEATHER ZONES 001, 002, 003, 012, 013, 014, 020, 021, 022, 031, 032, 249, AND 258... The National Weather Service in Sioux Falls has issued a Red Flag Warning, which is in effect from 1 PM this afternoon to 6 PM CST this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Extreme southeast South Dakota, extreme northeast Nebraska, and northwest. * WIND...West to northwest winds of 20 to 30 mph will increase through the morning and average 25 to 45 mph through late afternoon. * HUMIDITY...Minimum humidity values 20 to 25 percent late this afternoon, and again Tuesday afternoon. Humidity values closer to 30 to 35 percent will be found near the Iowa Great Lakes. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$
1 follow-up statement
848 WWUS83 KFSD 071700 RFWFSD URGENT - FIRE WEATHER MESSAGE National Weather Service Sioux Falls SD 1100 AM CST Tue Mar 7 2017 ...Red Flag Warning this afternoon for extreme southeast South Dakota, extreme northeast Nebraska, and northwest Iowa for very strong winds and low humidity... IAZ001>003-012>014-020>022-031-032-NEZ249-SDZ258-080000- /O.CON.KFSD.FW.W.0002.170307T1900Z-170308T0000Z/ Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Plymouth-Cherokee- Buena Vista-Woodbury-Ida-Extreme Northeast Nebraska- Lower James River To Lower Big Sioux River Valley- 1100 AM CST Tue Mar 7 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 001, 002, 003, 012, 013, 014, 020, 021, 022, 031, 032, 249, AND 258... * AFFECTED AREA...Extreme southeast South Dakota, extreme northeast Nebraska, and northwest. * WIND...West to northwest winds of 20 to 30 mph will increase and average 25 to 45 mph through late afternoon. * HUMIDITY...Minimum humidity values 20 to 25 percent late this afternoon, and again Tuesday afternoon. Humidity values closer to 30 to 35 percent will be found near the Iowa Great Lakes. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
Nearby
Red Flag Warnings in Iowa, 2017Red Flag Warnings in Nebraska, 2017Red Flag Warnings in South Dakota, 2017Every red flag warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.