Alert archive / Iowa / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 331, NWS Omaha, NE

July 10, 2024Montgomery County, Page County, Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Jul 10, 2024, 3:28 PM CDT for Montgomery County, Page County, Iowa. It was in force for 32 min. 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, 2024, 3:28 PM CDT (20:28 UTC)
Expired: Jul 10, 2024, 4:00 PM CDT
In force: 32 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Montgomery County, IA, Page County, IA

The radar

The Omaha radar (KOAX), 113 km from the middle of the area, began a volume at 20:31 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 10, 2:44 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 8.5 hours before the alert went out and 113 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 690 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1483 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 10, 1:28 PM CDT, 2 hours earlier.

Area forecast discussion, Jul 10, 1:28 PM CDT, 2 hours before

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Hazardous weather outlook, Jul 10, 11:47 AM CDT, 3 hours 41 minutes before

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The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 10, 5:03 PM CDT	Severe Thunderstorm Warning	OAX	Saline, Seward	27 min
Jul 10, 5:18 PM CDT	Severe Thunderstorm Warning	OAX	Saline, Seward	42 min
Jul 10, 5:30 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Seward	30 min
Jul 10, 5:34 PM CDT	Severe Thunderstorm Warning	OAX	Otoe	26 min
Jul 10, 5:57 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Lancaster, Saline, Seward	35 min
Jul 10, 6:30 PM CDT	Severe Thunderstorm Warning	OAX	Saline	30 min
Jul 10, 6:48 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Otoe	27 min
Jul 10, 2:20 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery	40 min
Jul 10, 2:37 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Page	53 min
Jul 10, 3:16 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Page	44 min
Jul 10, 3:55 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	26 min
Jul 10, 4:25 PM CDT	Severe Thunderstorm Warning	OAX	Page	22 min
Jul 10, 5:25 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	18 min
Jul 10, 5:59 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	31 min
Jul 10, 6:12 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	33 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2024 Every severe thunderstorm warning in 2024

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.