Alert archive / Iowa / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 5, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 25, 2021, 7:05 PM CDT for 4 counties in Iowa. It was in force for 40 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
- May 25, 2021, 7:05 PM CDT (00:05 UTC)
- Expired
- May 25, 2021, 7:45 PM CDT
- In force
- 40 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Boone County, IA, Dallas County, IA, Greene County, IA, Guthrie County, IA
The radar
The Des Moines radar (KDMX), 53 km from the middle of the area, began a volume at 00:07 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
Omaha, NE (KOAX), launched 00:00Z, 0.1 hours before the alert went out and 177 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
- 228 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 2355 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
009 WUUS53 KDMX 260005 SVRDMX IAC015-049-073-077-260045- /O.NEW.KDMX.SV.W.0005.210526T0005Z-210526T0045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Des Moines IA 705 PM CDT Tue May 25 2021 The National Weather Service in Des Moines has issued a * Severe Thunderstorm Warning for... Southeastern Greene County in west central Iowa... Northeastern Guthrie County in west central Iowa... Southwestern Boone County in central Iowa... Northwestern Dallas County in central Iowa... * Until 745 PM CDT. * At 705 PM CDT, a severe thunderstorm was located near Lake Panorama, or 11 miles northeast of Guthrie Center, moving east at 35 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Perry. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4179 9458 4189 9456 4196 9403 4170 9401 TIME...MOT...LOC 0005Z 270DEG 29KT 4183 9441 HAIL...1.00IN WIND...<50MPH $$ Krull
2 follow-up statements
832 WWUS53 KDMX 260027 SVSDMX Severe Weather Statement National Weather Service Des Moines IA 727 PM CDT Tue May 25 2021 IAC015-049-073-077-260045- /O.CON.KDMX.SV.W.0005.000000T0000Z-210526T0045Z/ Greene IA-Guthrie IA-Boone IA-Dallas IA- 727 PM CDT Tue May 25 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR SOUTHEASTERN GREENE...NORTHEASTERN GUTHRIE...SOUTHWESTERN BOONE AND NORTHWESTERN DALLAS COUNTIES... At 727 PM CDT, a severe thunderstorm was located near Lake Panorama, or 11 miles northeast of Guthrie Center, moving east at 20 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... Perry, Minburn, Bagley, Yale, Jamaica, Dawson, Perry Municipal Airport, Springbrook State Park and Lakin Slough Game Management Area. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4178 9452 4187 9447 4192 9403 4170 9401 TIME...MOT...LOC 0027Z 277DEG 19KT 4179 9434 HAIL...1.00IN WIND...<50MPH $$ Krull
021
WWUS53 KDMX 260043
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
743 PM CDT Tue May 25 2021
IAC015-049-073-077-260053-
/O.EXP.KDMX.SV.W.0005.000000T0000Z-210526T0045Z/
Greene IA-Guthrie IA-Boone IA-Dallas IA-
743 PM CDT Tue May 25 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GREENE...
NORTHEASTERN GUTHRIE...SOUTHWESTERN BOONE AND NORTHWESTERN DALLAS
COUNTIES WILL EXPIRE AT 745 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
LAT...LON 4178 9452 4187 9447 4192 9403 4170 9401
TIME...MOT...LOC 0043Z 270DEG 29KT 4179 9418
$$
KrullThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 11:14 PM CDT | Special Weather Statement | DMX | Adair, Madison | 46 min |
| May 25, 11:53 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Polk, Warren | 31 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2021Every severe thunderstorm warning in 2021
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.