Alert archive / Iowa / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 21, NWS Quad Cities, IA

March 10, 20265 counties in Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at Mar 10, 2026, 7:26 PM CDT for 5 counties in Iowa. It was in force for 39 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: Mar 10, 2026, 7:26 PM CDT (00:26 UTC)
Expired: Mar 10, 2026, 8:05 PM CDT
In force: 39 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Delaware County, IA, Dubuque County, IA, Jackson County, IA, Jones County, IA, Linn County, IA

The radar

The Quad Cities radar (KDVN), 81 km from the middle of the area, began a volume at 00:25 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
Mar 10, 5:40 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 0.4 hours before the alert went out and 84 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 343 J/kg
Mixed-layer CIN: -359 J/kg
Mixed-layer LCL: 771 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 529 m²/s²
0-3 km storm-relative helicity: 725 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 25.6

Open this sounding in Storm Lab

The text

As transmitted.

039 
WUUS53 KDVN 110026
SVRDVN
IAC055-061-097-105-113-110130-
/O.NEW.KDVN.SV.W.0021.260311T0026Z-260311T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
726 PM CDT Tue Mar 10 2026

The National Weather Service in the Quad Cities has issued a

* Severe Thunderstorm Warning for...
  West central Jackson County in east central Iowa...
  Southwestern Dubuque County in northeastern Iowa...
  Northern Jones County in east central Iowa...
  Southeastern Delaware County in northeastern Iowa...
  East central Linn County in east central Iowa...

* Until 830 PM CDT.

* At 725 PM CDT, a severe thunderstorm was located over Stone City,
  or over Anamosa, moving northeast at 45 mph.

  HAZARD...Half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

* Locations impacted include...
  Anamosa, Monticello, Cascade, Springville, Martelle, Whittier,
  Langworthy, Stone City, Viola, Matsell Bridge Natural Area, Jones
  County Fairgrounds, Fillmore, Pictured Rocks Wildlife Area,
  Wapsipinicon State Park, Camp Courageous, Scotch Grove, Central
  Park, Temple Hill, and Monticello Municipal Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
sturdy building.

&&

LAT...LON 4200 9135 4211 9151 4241 9105 4227 9084
TIME...MOT...LOC 0025Z 228DEG 42KT 4212 9133 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

Gross

2 follow-up statements

083 
WWUS53 KDVN 110039 RRA
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
739 PM CDT Tue Mar 10 2026

IAC113-110049-
/O.CAN.KDVN.SV.W.0021.000000T0000Z-260311T0130Z/
Linn IA-
739 PM CDT Tue Mar 10 2026

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LINN COUNTY IS
CANCELLED...

The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
northeastern and east central Iowa.

&&

LAT...LON 4227 9084 4207 9122 4217 9137 4221 9136
      4241 9105
TIME...MOT...LOC 0039Z 228DEG 42KT 4223 9117 

$$

IAC055-061-097-105-110130-
/O.CON.KDVN.SV.W.0021.000000T0000Z-260311T0130Z/
Jackson IA-Dubuque IA-Jones IA-Delaware IA-
739 PM CDT Tue Mar 10 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR WEST CENTRAL JACKSON...SOUTHWESTERN DUBUQUE...NORTHERN JONES AND
SOUTHEASTERN DELAWARE COUNTIES...

At 739 PM CDT, a severe thunderstorm was located over Monticello
Municipal Airport, or 10 miles northeast of Anamosa, moving northeast
at 45 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Anamosa, Monticello, Cascade, Langworthy, Camp Courageous, Scotch
Grove, Central Park, Jones County Fairgrounds, Fillmore, Pictured
Rocks Wildlife Area, Temple Hill, and Monticello Municipal Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
sturdy building.

&&

LAT...LON 4227 9084 4207 9122 4217 9137 4221 9136
      4241 9105
TIME...MOT...LOC 0039Z 228DEG 42KT 4223 9117 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

Gross

174 
WWUS53 KDVN 110105
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
805 PM CDT Tue Mar 10 2026

IAC055-061-097-105-110114-
/O.CAN.KDVN.SV.W.0021.000000T0000Z-260311T0130Z/
Jackson IA-Dubuque IA-Jones IA-Delaware IA-
805 PM CDT Tue Mar 10 2026

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL JACKSON...
SOUTHWESTERN DUBUQUE...NORTHERN JONES AND SOUTHEASTERN DELAWARE
COUNTIES IS CANCELLED...

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 has been cancelled.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
northeastern and east central Iowa.

&&

LAT...LON 4227 9084 4207 9122 4217 9137 4221 9136
      4241 9105
TIME...MOT...LOC 0103Z 228DEG 42KT 4243 9087 

$$

Gross

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 10, 7:18 PM CDT	Severe Thunderstorm Warning	DVN	Dubuque, Jackson	42 min
Mar 10, 7:23 PM CDT	Severe Thunderstorm Warning Destructive damage threat	DVN	Louisa	52 min
Mar 10, 7:43 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Scott	33 min
Mar 10, 7:49 PM CDT	Severe Thunderstorm Warning	DVN	Louisa	56 min
Mar 10, 7:55 PM CDT	Severe Thunderstorm Warning	DVN	Van Buren	65 min
Mar 10, 7:55 PM CDT	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jones	32 min
Mar 10, 8:02 PM CDT	Tornado Warning	DVN	Van Buren	43 min
Mar 10, 8:20 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Jackson	27 min
Mar 10, 8:41 PM CDT	Tornado Warning	DVN	Lee, Van Buren	64 min
Mar 10, 8:59 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	46 min
Mar 10, 9:36 PM CDT	Severe Thunderstorm Warning	DVN	Des Moines, Lee	30 min
Mar 11, 12:53 PM CDT	High Wind Watch	DVN	Benton, Buchanan, Delaware, Dubuque, Linn	14 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2026 Every severe thunderstorm warning in 2026

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.