Alert archive / Iowa / Special Weather Statements in 2022
Special Weather Statement, NWS Des Moines, IA
NWS Des Moines, IA issued this special weather statement at Aug 7, 2022, 6:28 PM CDT for Audubon County, Guthrie County, Iowa. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2022, 6:28 PM CDT (23:28 UTC)
- Expired
- Aug 7, 2022, 7:15 PM CDT
- In force
- 47 min
- Issued by
- NWS Des Moines, IA
- Hail
- 0.75 in
- Wind
- 50
Counties Audubon County, IA, Guthrie County, IA
The radar
The Des Moines radar (KDMX), 87 km from the middle of the area, began a volume at 23:30 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 text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this special weather statement went out at Aug 7, 6:20 PM CDT, 8 minutes earlier.
Area forecast discussion, Aug 7, 6:20 PM CDT, 8 minutes before
Area Forecast Discussion National Weather Service Des Moines IA 620 PM CDT Sun Aug 7 2022 ...Updated for the 00z Aviation Discussion... .DISCUSSION.../Tonight through Sunday/ Issued at 254 PM CDT Sun Aug 7 2022 Key Messages: -Marginal risk of severe weather this evening with gusty winds being the primary threat -Additional heavy rainfall is possible overnight north. -Heat will return on Wednesday after a short intermission Short Term: The stationary boundary that provided bountiful rainfall to areas north has not moved much since the morning. Currently it is draped across the northern border and reaches down into portions of western Iowa. Continued mid-level monsoonal moisture advects in from the WSW, bringing additional shower activity to the western flank of the boundary. It has continued to struggle to overcome inhibition in the southern portion of the state, leaving only scattered mid and high level clouds to combat the building heat in southern counties. However, the clearing also comes with steeper mixing which will work to lower the dew points some, thus lowering heat indices. There will still be some locations this afternoon that will reach heat advisory criteria south of I-80, but not widespread and long-lived enough to expand the Heat Advisory. The temperature gradient along the boundary will create higher amounts of MUCAPE in the warm sector, giving a window for more organized convection. The hail and tornado threats are minimal due to warm cloud depths and well-mixed low-level air. More favorable DCAPE along with very saturated cold pools will allow for an occasional damaging wind gust from a stronger thunderstorm. Overnight, the attention again shifts to the potential for heavy rainfall. Rain will begin to lighten in the morning as the system pushes southeast. The better signal for heavy rain lies to our northeast in portions of southern Wisconsin and northeast Iowa. This is where the jet-driven moisture transport will be maximized. As for central Iowa, the atmosphere will still have plenty of moisture with PWATs at nearly 200% of normal. The highest accumulations will be in northern portions of the state with 2+ inches possible in localized areas. The same areas that received lots of rain last night may see additional rainfall again tonight, but given the lack of impacts or significant river response, a flood watch was not reissued. Long Term: After the system clears out on Monday morning, we'll have a break from the hot temperatures for a couple of days. High pressure will work its way in from Canada and usher in northerly winds beginning on Monday. Another shortwave will dip into the area for Tuesday morning, but profiles are far too dry at that point to support precip. Meanwhile, another 500mb ridge will continue to build in the w est and eventually usher in a return of hotter weather beginning on Wednesday for areas west. Expect heat to once again be the main weather theme into next weekend. && .AVIATION.../For the 00Z TAFS through 00Z Monday evening/ Issued at 620 PM CDT Sun Aug 7 2022 Scattered storms are developing I80 north with activity expected to increase into the evening hours. With some uncertainty on coverage, have kept DSM and OTM mainly dry aft 05z while CAMS hint at more northeasterly movement on remaining storms into 06z and thereafter. Will continue to evaluate and update next package. /rev && .DMX WATCHES/WARNINGS/ADVISORIES... Heat Advisory until 8 PM CDT this evening for IAZ070>072-081>086- 092>097. && DISCUSSION...Hagenhoff/Jimenez AVIATION...REV
Hazardous weather outlook, Aug 7, 3:05 PM CDT, 3 hours 23 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA 305 PM CDT Sun Aug 7 2022 IAZ004>007-015>017-023>028-033>039-044>050-057>062-073>075-082015- Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene- Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper- Poweshiek-Warren-Marion-Mahaska- 305 PM CDT Sun Aug 7 2022 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...This afternoon and tonight Thunderstorm chances will continue today into tonight. The overall threat for severe weather is low, but a few strong wind gusts and locally heavy rainfall are possible. Flash flooding may be a concern if heavy rainfall occurs in areas that are already saturated from previous rain. .DAYS TWO THROUGH SEVEN...Monday through Saturday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. IAZ070>072-081>086-092>097-082015- Cass-Adair-Madison-Adams-Union-Clarke-Lucas-Monroe-Wapello-Taylor- Ringgold-Decatur-Wayne-Appanoose-Davis- 305 PM CDT Sun Aug 7 2022 This Hazardous Weather Outlook is for portions of southern Iowa. .DAY ONE...This afternoon and tonight A Heat Advisory is in effect for the area this afternoon. Please refer to the National Weather Service website at weather.gov/desmoines for further details. A few scattered thunderstorms are possible tonight. Severe weather is not expected. .DAYS TWO THROUGH SEVEN...Monday through Saturday A few thunderstorms may linger into Monday. No severe weather is expected. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. Hagenhoff
In the hours before
Special weather statement, Aug 7, 6:28 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Des Moines IA
628 PM CDT Sun Aug 7 2022
IAZ057-058-080015-
Guthrie IA-Audubon IA-
628 PM CDT Sun Aug 7 2022
...A strong thunderstorm will impact portions of southwestern Guthrie
and southeastern Audubon Counties through 715 PM CDT...
At 627 PM CDT, Doppler radar was tracking a strong thunderstorm near
Audubon, moving east at 25 mph.
HAZARD...Wind gusts up to 50 mph and penny size hail and additional
rainfall up to one inch.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible. Ponding of ponding of water on roadways, low
visibilities, and rises in small streams and creeks.
Locations impacted include...
Guthrie Center.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4156 9495 4173 9491 4173 9450 4154 9450
TIME...MOT...LOC 2327Z 271DEG 23KT 4165 9485
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
Bury/REVThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 7:05 PM CDT | Special Weather Statement | DMX | Cerro Gordo | 25 min |
| Aug 7, 12:40 AM CDT | Special Weather Statement | DMX | Cerro Gordo | 65 min |
| Aug 7, 3:24 AM CDT | Flash Flood Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 6 hr |
| Aug 7, 5:48 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 42 min |
| Aug 7, 6:38 PM CDT | Special Weather Statement | DMX | Polk | 52 min |
Nearby
Special Weather Statements in Iowa, 2022Every special weather statement in 2022
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.