Alert archive / Iowa / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 120, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 27, 2019, 1:42 PM CDT for 7 counties in Iowa. It was in force for 18 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
- Jun 27, 2019, 1:42 PM CDT (18:42 UTC)
- Expired
- Jun 27, 2019, 2:00 PM CDT
- In force
- 18 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Hancock County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Winnebago County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 145 km from the middle of the area, began a volume at 18:42 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 |
|---|---|---|---|
| Jun 27, 12:23 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 6.7 hours before the alert went out and 210 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
- 352 J/kg
- Mixed-layer CIN
- -339 J/kg
- Mixed-layer LCL
- 1615 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 27, 1:34 PM CDT, 8 minutes earlier.
Area forecast discussion, Jun 27, 1:34 PM CDT, 8 minutes before
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</html>Hazardous weather outlook, Jun 27, 3:20 AM CDT, 10 hours 22 minutes before
Hazardous Weather Outlook National Weather Service Des Moines IA 320 AM CDT Thu Jun 27 2019 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075- 081>086-092>097-280830- 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-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union- Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne- Appanoose-Davis- 320 AM CDT Thu Jun 27 2019 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight Thunderstorms may pass over northern Iowa later this morning into this afternoon with the main threats being strong wind gusts and isolated locally heavy rainfall. Additional storms may develop tonight with strong wind gusts and heavy rainfall the primary threats. .DAYS TWO THROUGH SEVEN...Friday through Wednesday Hot and humid conditions are expected Friday through Monday. Heat index values will be well into the 90s through this time period with heat index values nearing 105 degrees at times in some areas on Saturday and perhaps on Sunday. Thunderstorms will return to parts of Iowa early next week. Any severe risk will be better assessed in the coming days. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible over northern Iowa at times through Thursday night. Ansorge
In the hours before
Special weather statement, Jun 27, 10:57 AM CDT, 2 hours 45 minutes before
Special Weather Statement
National Weather Service Des Moines IA
1057 AM CDT Thu Jun 27 2019
IAZ005-006-271630-
Kossuth IA-Winnebago IA-
1057 AM CDT Thu Jun 27 2019
...GUSTY WINDS AND SMALl HAIL POSSIBLE...
At 1056 AM CDT, Doppler radar was tracking a strong thunderstorm 9
miles south of Elmore, or 22 miles west of Forest City, moving east
at 35 mph.
Pea size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Union Slogh, Buffalo Center, Thompson, Titonka, Lakota, Rake and
Ledyard.
LAT...LON 4350 9372 4326 9369 4326 9397 4324 9397
4324 9412 4350 9419
TIME...MOT...LOC 1556Z 258DEG 33KT 4338 9405
KrullSpecial weather statement, Jun 27, 11:00 AM CDT, 2 hours 42 minutes before
Special Weather Statement
National Weather Service Des Moines IA
1100 AM CDT Thu Jun 27 2019
IAZ005-015-023-024-271630-
Humboldt IA-Palo Alto IA-Kossuth IA-Pocahontas IA-
1100 AM CDT Thu Jun 27 2019
...GUSTY WINDS AND Small HAIL POSSIBLE...
At 1059 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 13 miles west of Union Slogh to 13 miles
southeast of Emmetsburg to 9 miles northeast of Pocahontas. Movement
was east at 35 mph.
Pea size hail and winds in excess of 30 mph will be possible with
these storms.
Locations impacted include...
Algona, West Bend, Bancroft, Rolfe, Burt, Whittemore, Bode, Fenton,
Lone Rock, Cylinder, Bradgate, St. Joseph, Ottosen, Rodman,
Irvington, Stinson Prairie State Park, Algona Municipal Airport and
Aa Call State Park.
LAT...LON 4336 9415 4278 9423 4276 9459 4295 9460
4325 9449 4326 9444 4333 9444
TIME...MOT...LOC 1559Z 254DEG 29KT 4328 9439 4298 9450 4281 9450
KrullSpecial weather statement, Jun 27, 11:44 AM CDT, 1 hour 58 minutes before
Special Weather Statement
National Weather Service Des Moines IA
1144 AM CDT Thu Jun 27 2019
IAZ005-016-017-024>026-035>037-271745-
Hamilton IA-Humboldt IA-Wright IA-Cerro Gordo IA-Kossuth IA-
Webster IA-Hardin IA-Hancock IA-Franklin IA-
1144 AM CDT Thu Jun 27 2019
...SMALL HAIL AND GUSTY WINDS LIKELY...
At 1143 AM CDT, Doppler radar was tracking a strong thunderstorm near
Belmond, or 11 miles north of Clarion, moving east at 50 mph.
Pea size hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Iowa Falls, Hampton, Garner, Clarion, Eagle Grove, Belmond, Britt,
Sheffield, Rockwell, Big Wall Lake, Eagle Lake, Elm Lake, Alden,
Kanawha, Goldfield, Dows, Klemme, Latimer, Thornton and Corwith.
LAT...LON 4308 9302 4300 9302 4245 9323 4264 9423
4314 9390
TIME...MOT...LOC 1643Z 279DEG 45KT 4289 9368
KrullSpecial weather statement, Jun 27, 12:44 PM CDT, 58 minutes before
Special Weather Statement
National Weather Service Des Moines IA
1244 PM CDT Thu Jun 27 2019
IAZ017-025>027-036>038-271845-
Hamilton IA-Wright IA-Cerro Gordo IA-Grundy IA-Hardin IA-Franklin IA-
Butler IA-
1244 PM CDT Thu Jun 27 2019
...STRONG THUNDERSTORMS WITH GUSTY WINDS AND SMALL HAIL...
At 1243 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Greene to 7 miles southwest of Hampton to
7 miles west of Iowa Falls. Movement was southeast at 20 mph.
Penny size hail and wind gusts up to 50 mph will be possible with
these storms.
Locations impacted include...
Iowa Falls, Hampton, Eldora, Allison, Parkersburg, Ackley,
Clarksville, Shell Rock, Sheffield, Greene, Aplington, Rockwell, Big
Wall Lake, Hubbard, Alden, Dumont, Radcliffe, Dows, Latimer and
Williams.
A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
central, north central and northeastern Iowa.
LAT...LON 4221 9331 4257 9371 4307 9305 4305 9302
4291 9302 4291 9278 4278 9255 4272 9255
TIME...MOT...LOC 1743Z 316DEG 18KT 4294 9282 4267 9330 4252 9342
KrullLocal storm report, Jun 27, 1:10 PM CDT, 32 minutes before
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</html>Local storm report, Jun 27, 1:11 PM CDT, 31 minutes before
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</html>The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 10:57 AM CDT | Special Weather Statement | DMX | Winnebago | 33 min |
| Jun 27, 11:00 AM CDT | Special Weather Statement | DMX | Kossuth | 30 min |
| Jun 27, 11:23 AM CDT | Severe Thunderstorm Warning | DMX | Winnebago, Worth | 37 min |
| Jun 27, 11:44 AM CDT | Special Weather Statement | DMX | Cerro Gordo, Franklin, Hancock, Wright | 61 min |
| Jun 27, 11:51 AM CDT | Severe Thunderstorm Warning | DMX | Worth | 24 min |
| Jun 27, 12:04 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Cerro Gordo, Franklin, Grundy, Hamilton, Hancock and 3 more | 41 min |
| Jun 27, 12:44 PM CDT | Special Weather Statement | DMX | Butler, Franklin, Hardin | 61 min |
| Jun 27, 12:56 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Humboldt, Kossuth, Palo Alto, Pocahontas | 49 min |
| Jun 27, 1:45 PM CDT | Special Weather Statement | DMX | Bremer | 30 min |
| Jun 27, 3:09 PM CDT | Special Weather Statement | DMX | Cerro Gordo, Worth | 36 min |
| Jun 27, 3:50 PM CDT | Special Weather Statement | DMX | Butler | 40 min |
| Jun 27, 3:56 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 32 min |
| Jun 27, 4:21 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 7 min |
| Jun 27, 4:27 PM CDT | Special Weather Statement | DMX | Bremer | 63 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2019Every severe thunderstorm warning in 2019
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.