Alert archive / Minnesota / Flash Flood Warnings in 2023

Flash Flood Warning 1, NWS Duluth, MN

May 9, 2023Aitkin County, Carlton County, Pine County, Minnesota

NWS Duluth, MN issued this flash flood warning at May 9, 2023, 1:03 AM CDT for Aitkin County, Carlton County, Pine County, Minnesota. It was in force for 3 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
May 9, 2023, 1:03 AM CDT (06:03 UTC)
Expired
May 9, 2023, 4:05 AM CDT
In force
3 hr
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Flood severity
None

Counties Aitkin County, MN, Carlton County, MN, Pine County, MN

The radar

The Duluth radar (KDLH), 71 km from the middle of the area, began a volume at 06:08 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

Minneapolis, MN (KMPX), launched 00:00Z, 6.1 hours before the alert went out and 184 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.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2023-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 221 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2023-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
221 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1918 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 8, 11:05 PM CDTSpecial Weather StatementDLHAitkin10 min
May 8, 11:14 PM CDTSpecial Weather StatementDLHAitkin16 min
May 8, 11:16 PM CDTSpecial Weather StatementDLHPine14 min
May 8, 11:27 PM CDTSpecial Weather StatementDLHAitkin33 min
May 8, 11:32 PM CDTSpecial Weather StatementDLHPine28 min
May 8, 11:59 PM CDTSpecial Weather StatementDLHCarlton31 min
May 9, 12:03 AM CDTSpecial Weather StatementDLHCarlton27 min
May 9, 12:26 AM CDTSpecial Weather StatementDLHCarlton34 min
May 9, 12:32 AM CDTAreal Flood AdvisoryDLHAitkin, Carlton, Pine4 hr
May 9, 12:46 AM CDTSpecial Weather StatementDLHSaint Louis29 min
May 9, 12:54 AM CDTSpecial Weather StatementDLHCarlton36 min
May 9, 1:13 AM CDTSpecial Weather StatementDLHPine32 min
May 9, 1:25 AM CDTSevere Thunderstorm WarningDLHCarlton, Pine35 min
May 9, 3:19 AM CDTSpecial Weather StatementDLHLake26 min
May 9, 4:15 AM CDTAreal Flood AdvisoryDLHAitkin, Carlton, Pine3 hr
May 9, 6:38 PM CDTSpecial Weather StatementDLHCrow Wing37 min
May 8, 9:04 PM CDTSpecial Weather StatementDLHBurnett26 min
May 8, 9:23 PM CDTSpecial Weather StatementDLHBurnett37 min
May 9, 2:00 AM CDTSpecial Weather StatementDLHDouglas30 min

Nearby

Flash Flood Warnings in Minnesota, 2023Every flash flood warning in 2023

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.