Alert archive / North Dakota / Flash Flood Warnings in 2010

Flash Flood Warning 20, NWS Bismarck, ND

July 10, 2010Hettinger County, North Dakota

NWS Bismarck, ND issued this flash flood warning at Jul 10, 2010, 7:49 PM MDT for Hettinger County, North Dakota. It was in force for 6 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
Jul 10, 2010, 7:49 PM MDT (01:49 UTC)
Expired
Jul 11, 2010, 2:00 AM MDT
In force
6 hr
Issued by
NWS Bismarck, ND
Area
Storm-based polygon
Flood severity
None

County Hettinger County, ND

The radar

The Bismarck radar (KBIS), 135 km from the middle of the area, began a volume at 01:52 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

Aberdeen, SD (KABR), launched 00:00Z, 1.8 hours before the alert went out and 359 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, Aberdeen, SD at 00:00Z on 2010-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1200 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, Aberdeen, SD at 00:00Z on 2010-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.1939Sfc1 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
1200 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
2383 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 10, 6:36 PM MDTSevere Thunderstorm WarningBISDunn, Mercer39 min
Jul 10, 7:09 PM MDTSevere Thunderstorm WarningBISMercer, Oliver51 min
Jul 10, 7:24 PM MDTSevere Thunderstorm WarningBISHettinger66 min
Jul 10, 7:28 PM MDTAreal Flood AdvisoryBISHettinger3 hr
Jul 10, 7:57 PM MDTSevere Thunderstorm WarningBISMorton, Oliver33 min
Jul 10, 9:29 PM MDTSevere Thunderstorm WarningBISMorton, Oliver33 min
Jul 10, 9:43 PM MDTSevere Thunderstorm WarningBISBurleigh, McLean, Oliver47 min
Jul 10, 10:10 PM MDTAreal Flood AdvisoryBISKidder, Sheridan, Wells3 hr

Nearby

Flash Flood Warnings in North Dakota, 2010Every flash flood warning in 2010

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.