Alert archive / Iowa / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 11, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at May 15, 2021, 4:50 PM CDT for Fayette County, Iowa. It was in force for 40 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 15, 2021, 4:50 PM CDT (21:50 UTC)
- Expired
- May 15, 2021, 5:30 PM CDT
- In force
- 40 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Fayette County, IA
The radar
The La Crosse radar (KARX), 124 km from the middle of the area, began a volume at 21:53 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 15, 5:13 PM CDT | HAIL 1.75 | 4 W Fayette, IA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 9.8 hours before the alert went out and 176 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 774 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
355 WUUS53 KARX 152150 SVRARX IAC065-152230- /O.NEW.KARX.SV.W.0011.210515T2150Z-210515T2230Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service La Crosse WI 450 PM CDT Sat May 15 2021 The National Weather Service in La Crosse has issued a * Severe Thunderstorm Warning for... Central Fayette County in northeastern Iowa... * Until 530 PM CDT. * At 449 PM CDT, a severe thunderstorm was located over Maynard, or near Oelwein, moving east at 25 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * This severe thunderstorm will be near... Fayette around 500 PM CDT. Arlington around 515 PM CDT. Other locations impacted by this severe thunderstorm include Highway 93 And County W 14, Westgate, Donnan, Highway 93 And County V 68, Volga River State Park, Wadena and Brainard. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4284 9207 4303 9161 4274 9161 4269 9203 TIME...MOT...LOC 2149Z 262DEG 22KT 4277 9190 HAIL...1.00IN WIND...<50MPH $$ DAS
3 follow-up statements
854 WWUS53 KARX 152211 SVSARX Severe Weather Statement National Weather Service La Crosse WI 511 PM CDT Sat May 15 2021 IAC065-152230- /O.CON.KARX.SV.W.0011.000000T0000Z-210515T2230Z/ Fayette IA- 511 PM CDT Sat May 15 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR SOUTHEASTERN FAYETTE COUNTY... At 510 PM CDT, a severe thunderstorm was approaching Fayette, or 9 miles south of West Union, moving east at 20 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe storm will be near... Fayette around 515 PM CDT. Arlington around 530 PM CDT. Elgin around 545 PM CDT. Other locations impacted by this severe thunderstorm include Highway 93 And County W 14, Volga River State Park, Wadena, Brainard, Randalia, County Road W 33 And 187 and County Road W 45 And 187. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4284 9196 4303 9161 4274 9161 4271 9191 TIME...MOT...LOC 2210Z 251DEG 17KT 4282 9183 HAIL...1.00IN WIND...<50MPH $$ Shea
289
WWUS53 KARX 152220
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
520 PM CDT Sat May 15 2021
IAC065-152230-
/O.CON.KARX.SV.W.0011.000000T0000Z-210515T2230Z/
Fayette IA-
520 PM CDT Sat May 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR SOUTHEASTERN FAYETTE COUNTY...
At 519 PM CDT, a severe thunderstorm was located near Fayette, or 9
miles south of West Union, moving east at 25 mph.
HAZARD...Golf ball size hail.
SOURCE...Law enforcement.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
This severe storm will be near...
Arlington around 530 PM CDT.
Other locations impacted by this severe thunderstorm include Volga
River State Park, Wadena, Brainard, Randalia, County Road W 33 And
187, County Road W 45 And 187 and Albany.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.
&&
LAT...LON 4286 9191 4303 9161 4274 9161 4272 9184
TIME...MOT...LOC 2219Z 262DEG 22KT 4283 9175
HAIL...1.75IN
WIND...<50MPH
$$
DAS588
WWUS53 KARX 152227
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
527 PM CDT Sat May 15 2021
IAC065-152237-
/O.EXP.KARX.SV.W.0011.000000T0000Z-210515T2230Z/
Fayette IA-
527 PM CDT Sat May 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FAYETTE COUNTY
WILL EXPIRE AT 530 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small
hail is still possible with this thunderstorm and another storm that
was entering the county west of West Union.
LAT...LON 4286 9191 4303 9161 4274 9161 4272 9184
TIME...MOT...LOC 2227Z 263DEG 18KT 4282 9178
$$
SheaThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 4:47 PM CDT | Special Weather Statement | ARX | Fayette | 28 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.