Isaias is expected to strengthen and be a strong hurricane when it approaches the northern Gulf Coast on Friday. There is an increasing risk of damaging hurricane-force winds and life-threatening storm surge impacts Friday into Saturday. Isaias will bring heavy rainfall to the northern Gulf Coast and much of the Southeast U.S. Friday into the weekend. Read More >
Overview
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Thunderstorms developed in two rounds, ahead of an advancing cold front and along a warm front. Many of the storms were elevated, and their primary impact was large hail, including reports of larger than baseball sized hail in Osceola, Iowa. This supercell along the warm front later went on to produce a tornado that produced damage in Warren and Marion Counties. Based on eyewitness accounts and video evidence, it is likely that this tornado was intermittent and not a fully continuous path. For simplicity, this will be noted as a single path. Other NWS Office Event Summaries:
Photo credit: NWS Damage Survey
Last update: April 6th, 2023 at 10:00am CST. |
Photo credit: Jesse Castillo / NWS Employee |
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| April 4, 2023 Severe Weather Outlook |
Radar imagery at 6:57pm as the storm crossed from Warren to Marion County. |
Tornadoes:
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Warren and Marion Counties
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The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:
| EF0 Weak 65-85 mph |
EF1 Moderate 86-110 mph |
EF2 Significant 111-135 mph |
EF3 Severe 136-165 mph |
EF4 Extreme 166-200 mph |
EF5 Catastrophic 200+ mph |
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Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
229 AM CDT WED APR 5 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0445 PM HAIL 2 E NEW MARKET 40.73N 94.86W
04/04/2023 M1.50 INCH TAYLOR IA PUBLIC
TIME ESTIMATED.
0451 PM HAIL 4 E NEW MARKET 40.74N 94.82W
04/04/2023 E1.75 INCH TAYLOR IA TRAINED SPOTTER
GOLF BALL SIZED HAIL.
0506 PM HAIL BEDFORD 40.67N 94.72W
04/04/2023 M1.25 INCH TAYLOR IA PUBLIC
0520 PM HAIL ORIENT 41.20N 94.42W
04/04/2023 E0.88 INCH ADAIR IA EMERGENCY MNGR
NICKEL SIZED HAIL.
0541 PM HAIL EARLHAM 41.49N 94.12W
04/04/2023 U0.75 INCH MADISON IA PUBLIC
0550 PM HAIL 1 E BOONE 42.05N 93.86W
04/04/2023 E1.00 INCH BOONE IA TRAINED SPOTTER
0554 PM HAIL 2 SW BOONE 42.03N 93.91W
04/04/2023 M1.00 INCH BOONE IA PUBLIC
REPORT FROM SOCIAL MEDIA.
0556 PM HAIL 2 WNW BOONE 42.06N 93.91W
04/04/2023 E1.25 INCH BOONE IA PUBLIC
TIME ESTIMATED.
0556 PM HAIL 1 SSE BOONE 42.04N 93.87W
04/04/2023 E1.00 INCH BOONE IA PUBLIC
TIME ESTIMATED.
0556 PM HAIL 5 NNE AFTON 41.09N 94.15W
04/04/2023 E0.50 INCH UNION IA TRAINED SPOTTER
HALF INCH HAIL.
0605 PM HAIL 8 S STANHOPE 42.17N 93.81W
04/04/2023 M1.00 INCH BOONE IA TRAINED SPOTTER
TRAINED SPOTTER REPORTED QUARTER SIZE HAIL
FROM 602 TO 605 PM AND HALF INCH HAIL FROM
605 TO 608 PM.
0609 PM HAIL 2 WNW MESERVEY 42.92N 93.50W
04/04/2023 E1.50 INCH HANCOCK IA TRAINED SPOTTER
0610 PM HAIL 3 S POLK CITY 41.74N 93.72W
04/04/2023 E0.88 INCH POLK IA NWS EMPLOYEE
0619 PM HAIL 2 ESE MURRAY 41.03N 93.91W
04/04/2023 E1.00 INCH CLARKE IA LAW ENFORCEMENT
0620 PM HAIL NODAWAY 40.94N 94.90W
04/04/2023 E0.88 INCH ADAMS IA EMERGENCY MNGR
0622 PM HAIL 3 NNW OSCEOLA 41.07N 93.78W
04/04/2023 E2.75 INCH CLARKE IA PUBLIC
VIA SOCIAL MEDIA. TIME ESTIMATED FROM RADAR.
0622 PM HAIL OSCEOLA 41.03N 93.78W
04/04/2023 E2.00 INCH CLARKE IA PUBLIC
VIA SOCIAL MEDIA.
0622 PM HAIL 1 N OSCEOLA 41.04N 93.77W
04/04/2023 E1.75 INCH CLARKE IA LAW ENFORCEMENT
GOLF BALL TO SLIGHTLY LARGER.
0623 PM HAIL 3 NE DES MOINES 41.61N 93.57W
04/04/2023 U0.75 INCH POLK IA PUBLIC
REPORT FROM MPING.
0623 PM TSTM WND DMG 1 E OSCEOLA 41.03N 93.75W
04/04/2023 CLARKE IA TRAINED SPOTTER
SHED BLOWN OVER. TIME ESTIMATED.
0623 PM HAIL 1 NNE OSCEOLA 41.05N 93.76W
04/04/2023 E2.75 INCH CLARKE IA TRAINED SPOTTER
TIME ESTIMATED.
0623 PM HAIL 1 NW OSCEOLA 41.04N 93.79W
04/04/2023 E2.75 INCH CLARKE IA PUBLIC
REPORT FROM MPING. TIME ESTIMATED.
0624 PM HAIL 1 SW IOWA FALLS 42.52N 93.27W
04/04/2023 E1.00 INCH HARDIN IA EMERGENCY MNGR
0627 PM HAIL 5 SE NEW VIRGINIA 41.13N 93.65W
04/04/2023 M3.00 INCH CLARKE IA BROADCAST MEDIA
CORRECTS PREVIOUS HAIL REPORT FROM 5 SE NEW
VIRGINIA. THREE INCH HAIL REPORTED ON NEW
LIBERTY HIGHWAY. TIME ESTIMATED.
0629 PM HAIL 5 SE NEW VIRGINIA 41.13N 93.65W
04/04/2023 U1.00 INCH CLARKE IA PUBLIC
REPORT FROM MPING.
0630 PM HAIL 5 ESE NEW VIRGINIA 41.14N 93.64W
04/04/2023 E3.00 INCH CLARKE IA TRAINED SPOTTER
0630 PM HAIL 4 W INDIANOLA 41.35N 93.65W
04/04/2023 E1.25 INCH WARREN IA TRAINED SPOTTER
0635 PM HAIL 7 S INDIANOLA 41.26N 93.58W
04/04/2023 E1.00 INCH WARREN IA PUBLIC
REPORT FROM MPING.
0635 PM HAIL 7 E NEW VIRGINIA 41.19N 93.60W
04/04/2023 E1.25 INCH WARREN IA TRAINED SPOTTER
0636 PM HAIL 5 W LACONA 41.20N 93.49W
04/04/2023 E1.00 INCH WARREN IA EMERGENCY MNGR
1 INCH HAIL NEAR LIBERTY CENTER.
0636 PM HAIL 3 SSE SAINT MARYS 41.26N 93.72W
04/04/2023 U1.00 INCH WARREN IA PUBLIC
REPORT FROM MPING.
0640 PM HAIL 3 E SAINT MARYS 41.31N 93.67W
04/04/2023 M1.00 INCH WARREN IA PUBLIC
0647 PM HAIL 4 W INDIANOLA 41.35N 93.65W
04/04/2023 M2.50 INCH WARREN IA TRAINED SPOTTER
0650 PM HAIL 8 ENE NEW VIRGINIA 41.21N 93.58W
04/04/2023 U2.00 INCH WARREN IA PUBLIC
REPORT FROM MPING.
0650 PM HAIL 2 S DUMONT 42.72N 92.97W
04/04/2023 E0.88 INCH BUTLER IA EMERGENCY MNGR
0654 PM HAIL 3 NNE OSCEOLA 41.07N 93.76W
04/04/2023 U3.50 INCH CLARKE IA PUBLIC
REPORT FROM MPING.
0656 PM TORNADO 4 SSE SANDYVILLE 41.32N 93.35W
04/04/2023 WARREN IA PUBLIC
TORNADO TOUCHDOWN BUT UP AND DOWN.
0657 PM HAIL 5 SE COLLINS 41.85N 93.25W
04/04/2023 U1.00 INCH JASPER IA PUBLIC
REPORT FROM MPING.
0657 PM HAIL 2 S PLEASANTVILLE 41.36N 93.26W
04/04/2023 E1.25 INCH MARION IA TRAINED SPOTTER
HALF DOLLAR HAIL.
0657 PM TORNADO 4 ESE MILO 41.26N 93.37W
04/04/2023 WARREN IA EMERGENCY MNGR
DEBRIS REPORTED SOUTHEAST OF MILO.
0658 PM HAIL 3 WNW ORIENT 41.21N 94.47W
04/04/2023 E1.00 INCH ADAIR IA TRAINED SPOTTER
0658 PM FUNNEL CLOUD 5 SE PLEASANTVILLE 41.35N 93.19W
04/04/2023 MARION IA EMERGENCY MNGR
0702 PM HAIL ORIENT 41.20N 94.42W
04/04/2023 E1.75 INCH ADAIR IA EMERGENCY MNGR
0704 PM TORNADO 2 SE PLEASANTVILLE 41.37N 93.24W
04/04/2023 MARION IA TRAINED SPOTTER
0705 PM HAIL MELBOURNE 41.94N 93.11W
04/04/2023 U1.00 INCH MARSHALL IA PUBLIC
REPORT FROM MPING.
0730 PM HAIL SULLY 41.58N 92.84W
04/04/2023 E1.00 INCH JASPER IA TRAINED SPOTTER
REPORTED BY TRAINED SPOTTER.
0733 PM HAIL SULLY 41.58N 92.84W
04/04/2023 E1.50 INCH JASPER IA TRAINED SPOTTER
TIME ESTIMATED.
0738 PM HAIL 3 E ORIENT 41.20N 94.36W
04/04/2023 E0.88 INCH ADAIR IA EMERGENCY MNGR
0800 PM HAIL 1 S CLIVE 41.59N 93.77W
04/04/2023 E0.50 INCH POLK IA TRAINED SPOTTER
HALF INCH HAIL. TIME ESTIMATED.
0800 PM HAIL 3 SSW BEDFORD 40.64N 94.75W
04/04/2023 U1.00 INCH TAYLOR IA PUBLIC
REPORT FROM MPING.
0806 PM HAIL 6 NNW MALCOM 41.80N 92.59W
04/04/2023 E1.00 INCH POWESHIEK IA TRAINED SPOTTER
0807 PM HAIL 3 NE DES MOINES 41.61N 93.57W
04/04/2023 E1.00 INCH POLK IA PUBLIC
REPORT FROM MPING.
0822 PM FUNNEL CLOUD 3 ENE COLFAX 41.69N 93.18W
04/04/2023 JASPER IA TRAINED SPOTTER
POSSIBLE FUNNEL CLOUD LOOKING WEST.
0822 PM HAIL 1 NW ALTOONA 41.66N 93.48W
04/04/2023 E0.88 INCH POLK IA FIRE DEPT/RESCUE
0823 PM HAIL VINING 41.99N 92.39W
04/04/2023 E1.00 INCH TAMA IA LAW ENFORCEMENT
HEAVY WINDS AND QUARTER SIZE HAIL REPORTED
NEAR VINING.
0852 PM HAIL 3 N MARTENSDALE 41.42N 93.75W
04/04/2023 E1.00 INCH WARREN IA PUBLIC
REPORT FROM MPING.
0854 PM HAIL BAXTER 41.82N 93.15W
04/04/2023 E1.75 INCH JASPER IA PUBLIC
REPORTED VIA SOCIAL MEDIA.
0854 PM HAIL BAXTER 41.83N 93.15W
04/04/2023 E1.00 INCH JASPER IA FIRE DEPT/RESCUE
0855 PM HAIL SAINT CHARLES 41.29N 93.81W
04/04/2023 E1.75 INCH MADISON IA EMERGENCY MNGR
0857 PM HAIL 1 S WEST DES MOINES 41.55N 93.75W
04/04/2023 E1.00 INCH POLK IA PUBLIC
REPORT FROM MPING.
0905 PM HAIL LAUREL 41.89N 92.92W
04/04/2023 M1.00 INCH MARSHALL IA PUBLIC
IMAGE SUBMITTED VIA SOCIAL MEDIA.
0910 PM HAIL MOUNT AYR 40.71N 94.25W
04/04/2023 E0.50 INCH RINGGOLD IA TRAINED SPOTTER
HALF INCH HAIL.
0929 PM HAIL PLEASANT HILL 41.59N 93.52W
04/04/2023 U1.00 INCH POLK IA PUBLIC
REPORT FROM MPING: QUARTER (1.00 IN.).
0957 PM HAIL 6 NE MARSHALLTOWN 42.10N 92.84W
04/04/2023 M0.25 INCH MARSHALL IA PUBLIC
REPORTED BY TRAINED SPOTTER.
0959 PM HAIL 7 NE MARSHALLTOWN 42.10N 92.82W
04/04/2023 M0.50 INCH MARSHALL IA PUBLIC
REPORTED BY TRAINED SPOTTER.
1026 PM TSTM WND DMG GRUNDY CENTER 42.36N 92.77W
04/04/2023 GRUNDY IA PUBLIC
1-INCH TREE LIMBS BROKEN; SHINGLES BLOWN OFF.
1053 PM NON-TSTM WND GST 4 E ALBION 42.12N 92.92W
04/04/2023 M58 MPH MARSHALL IA ASOS
ASOS STATION KMIW MARSHALLTOWN AIRPORT. POSSIBLE WAKE LOW.
1135 PM NON-TSTM WND GST WATERLOO REGIONAL AIRPO 42.55N 92.40W
04/04/2023 M58 MPH BLACK HAWK IA ASOS
ASOS STATION KALO WATERLOO AIRPORT. POSSIBLE WAKE LOW.
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