Alert archive / South Dakota / Red Flag Warnings in 2021
Red Flag Warning 25, NWS Aberdeen, SD
NWS Aberdeen, SD issued this red flag warning at Nov 16, 2021, 2:09 AM MST for 4 counties in South Dakota. It took effect at Nov 16, 2021, 11:00 AM MST. It was in force for 7 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
- Nov 16, 2021, 2:09 AM MST (09:09 UTC)
- In effect from
- Nov 16, 2021, 11:00 AM MST
- Expired
- Nov 16, 2021, 6:00 PM MST
- In force
- 7 hr
- Issued by
- NWS Aberdeen, SD
Counties Corson County, SD, Dewey County, SD, Jones County, SD, Stanley County, SD
The radar
The Rapid City radar (KUDX), 173 km from the middle of the area, began a volume at 09:11 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 |
|---|---|---|---|
| Nov 16, 1:28 PM MST | NON-TSTM WND GST 51 | 4 W Trail City, SD | MESONET STATION 178 TRAIL CITY (SDDOT). |
| Nov 16, 2:06 PM MST | NON-TSTM WND GST 50 | 11 S Bullhead, SD | MESONET STATION GRRS2 BULLHEAD 10 S. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 9.2 hours before the alert went out and 179 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
- 2969 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 208 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
160 WWUS83 KABR 160909 RFWABR URGENT - FIRE WEATHER MESSAGE National Weather Service Aberdeen SD 309 AM CST Tue Nov 16 2021 SDZ003-015-033-045-162200- /O.NEW.KABR.FW.W.0025.211116T1800Z-211117T0100Z/ Corson-Dewey-Stanley-Jones- 309 AM CST Tue Nov 16 2021 /209 AM MST Tue Nov 16 2021/ ...RED FLAG WARNING IN EFFECT FROM NOON CST /11 AM MST/ TODAY TO 7 PM CST /6 PM MST/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF CENTRAL SOUTH DAKOTA... The National Weather Service in Aberdeen has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon CST /11 AM MST/ today to 7 PM CST /6 PM MST/ this evening. * AFFECTED AREA...In South Dakota, Corson, Dewey, Stanley and Jones. * WINDS...Northwest 25 to 35 mph with gusts up to 60 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...The combination of gusty winds and low relative humidity will support rapid fire growth. If a fire develops, it would become difficult to control and suppress. 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. && $$
1 follow-up statement
260 WWUS83 KABR 162055 RFWABR URGENT - FIRE WEATHER MESSAGE National Weather Service Aberdeen SD 255 PM CST Tue Nov 16 2021 SDZ003-015-033-045-170100- /O.CON.KABR.FW.W.0025.000000T0000Z-211117T0100Z/ Corson-Dewey-Stanley-Jones- 255 PM CST Tue Nov 16 2021 /155 PM MST Tue Nov 16 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CST /6 PM MST/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PARTS OF CENTRAL SOUTH DAKOTA... * AFFECTED AREA...In South Dakota, Corson, Dewey, Stanley and Jones. * WINDS...Northwest 25 to 35 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...The combination of gusty winds and low relative humidity will support rapid fire growth. If a fire develops, it would become difficult to control and suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ Parkin
Nearby
Red Flag Warnings in South Dakota, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.