Alert archive / Iowa / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 14, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 19, 2021, 1:08 AM CDT for Lee County, Van Buren County, Iowa; Clark County, Scotland County, Missouri. It was in force for 49 min. 4 reports 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
- Jun 19, 2021, 1:08 AM CDT (06:08 UTC)
- Expired
- Jun 19, 2021, 1:57 AM CDT
- In force
- 49 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Lee County, IA, Van Buren County, IA, Clark County, MO, Scotland County, MO
The radar
The Quad Cities radar (KDVN), 159 km from the middle of the area, began a volume at 06:11 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 |
|---|---|---|---|
| Jun 19, 1:15 AM CDT | TSTM WND DMG | Memphis, MO | TREE DOWN. |
| Jun 19, 1:16 AM CDT | TSTM WND DMG | 2 E Milton, IA | CORN FLATTENED IN A LARGE AREA AROUND MILTON. |
| Jun 19, 1:37 AM CDT | TSTM WND DMG | 3 Ene Farmington, IA | TREE BRANCH DOWN ACROSS ROAD. |
| Jun 19, 1:47 AM CDT | TSTM WND DMG | Fort Madison, IA | TREE DOWN ON A CARPORT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 18, 10:08 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 6.1 hours before the alert went out and 165 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
- 4 J/kg
- Mixed-layer CIN
- -335 J/kg
- Mixed-layer LCL
- 2572 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
874
WUUS53 KDVN 190608
SVRDVN
IAC111-177-MOC045-199-190715-
/O.NEW.KDVN.SV.W.0014.210619T0608Z-210619T0715Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
108 AM CDT Sat Jun 19 2021
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Southern Van Buren County in southeastern Iowa...
Southwestern Lee County in southeastern Iowa...
Northern Scotland County in northeastern Missouri...
Clark County in northeastern Missouri...
* Until 215 AM CDT.
* At 108 AM CDT, a severe thunderstorm was located near Milton, or 9
miles north of Memphis, moving east at 55 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Croton, Donnellson, New Boston, St. Francisville, Nauvoo, Montrose
and Keokuk.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
&&
LAT...LON 4056 9235 4060 9231 4060 9218 4074 9218
4062 9132 4055 9141 4050 9136 4045 9138
4040 9137 4036 9145 4029 9149 4049 9235
TIME...MOT...LOC 0608Z 274DEG 49KT 4060 9216
HAIL...1.00IN
WIND...60MPH
$$
Ervin5 follow-up statements
482
WWUS53 KDVN 190618
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
118 AM CDT Sat Jun 19 2021
IAC111-177-MOC045-199-190715-
/O.CON.KDVN.SV.W.0014.000000T0000Z-210619T0715Z/
Van Buren IA-Lee IA-Scotland MO-Clark MO-
118 AM CDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT
FOR SOUTHERN VAN BUREN...SOUTHWESTERN LEE...NORTHERN SCOTLAND AND
CLARK COUNTIES...
At 118 AM CDT, a severe thunderstorm was located near Cantril, or 10
miles south of Keosauqua, moving east at 55 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Fort Madison, Keokuk, Kahoka, Memphis, Nauvoo, Hamilton, Warsaw,
Donnellson, Montrose, Wayland, Milton, Wyaconda, Cantril, Alexandria,
Luray, Granger, St. Francisville, New Boston, Croton and Winchester.
LAT...LON 4056 9235 4060 9231 4060 9218 4074 9218
4062 9132 4055 9141 4050 9136 4045 9138
4040 9137 4036 9145 4029 9149 4049 9235
TIME...MOT...LOC 0618Z 274DEG 49KT 4059 9197
HAIL...1.00IN
WIND...70MPH
$$
Ervin184
WWUS53 KDVN 190625
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
125 AM CDT Sat Jun 19 2021
IAC111-177-MOC045-199-190715-
/O.CON.KDVN.SV.W.0014.000000T0000Z-210619T0715Z/
Van Buren IA-Lee IA-Scotland MO-Clark MO-
125 AM CDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT
FOR SOUTHERN VAN BUREN...SOUTHWESTERN LEE...NORTHEASTERN SCOTLAND AND
CLARK COUNTIES...
At 125 AM CDT, a severe thunderstorm was located 8 miles west of
Croton, or 12 miles southeast of Keosauqua, moving east at 55 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Fort Madison, Keokuk, Kahoka, Memphis, Nauvoo, Hamilton, Warsaw,
Donnellson, Montrose, Wayland, Wyaconda, Cantril, Alexandria, Luray,
Granger, St. Francisville, New Boston, Croton, Winchester and
Farmington.
LAT...LON 4057 9211 4072 9207 4062 9132 4055 9141
4050 9136 4045 9138 4040 9137 4036 9145
4029 9149 4046 9220
TIME...MOT...LOC 0625Z 274DEG 49KT 4058 9184
HAIL...<.75IN
WIND...70MPH
$$
Ervin038
WWUS53 KDVN 190631
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
131 AM CDT Sat Jun 19 2021
IAC111-177-MOC045-199-190715-
/O.CON.KDVN.SV.W.0014.000000T0000Z-210619T0715Z/
Van Buren IA-Lee IA-Scotland MO-Clark MO-
131 AM CDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT
FOR SOUTHEASTERN VAN BUREN...SOUTHWESTERN LEE...NORTHEASTERN SCOTLAND
AND CLARK COUNTIES...
At 131 AM CDT, a severe thunderstorm was located over Croton, or 10
miles north of Kahoka, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Fort Madison, Keokuk, Kahoka, Memphis, Nauvoo, Hamilton, Warsaw,
Donnellson, Montrose, Wayland, Wyaconda, Alexandria, Luray, Granger,
New Boston, Croton, St. Francisville, Winchester, Farmington and
Revere.
LAT...LON 4058 9203 4071 9199 4062 9132 4055 9141
4050 9136 4045 9138 4040 9137 4036 9145
4029 9149 4046 9220
TIME...MOT...LOC 0631Z 274DEG 49KT 4058 9174
HAIL...<.75IN
WIND...60MPH
$$
Ervin834
WWUS53 KDVN 190639
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
139 AM CDT Sat Jun 19 2021
IAC111-177-MOC045-199-190715-
/O.CON.KDVN.SV.W.0014.000000T0000Z-210619T0715Z/
Van Buren IA-Lee IA-Scotland MO-Clark MO-
139 AM CDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT
FOR SOUTHEASTERN VAN BUREN...SOUTHWESTERN LEE...EAST CENTRAL SCOTLAND
AND CLARK COUNTIES...
At 139 AM CDT, a severe thunderstorm was located near New Boston, or
11 miles west of Nauvoo, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Fort Madison, Keokuk, Kahoka, Nauvoo, Hamilton, Warsaw, Donnellson,
Montrose, Wayland, Alexandria, Luray, Granger, New Boston, Croton,
St. Francisville, Farmington, Revere, Arbela, Charleston and Keokuk
Airport.
LAT...LON 4056 9192 4068 9180 4062 9132 4055 9141
4050 9136 4045 9138 4040 9137 4036 9145
4029 9149 4046 9205
TIME...MOT...LOC 0639Z 274DEG 49KT 4057 9159
HAIL...<.75IN
WIND...60MPH
$$
Ervin793
WWUS53 KDVN 190657
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
157 AM CDT Sat Jun 19 2021
IAC111-177-MOC045-199-190707-
/O.CAN.KDVN.SV.W.0014.000000T0000Z-210619T0715Z/
Van Buren IA-Lee IA-Scotland MO-Clark MO-
157 AM CDT Sat Jun 19 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN VAN BUREN...
SOUTHWESTERN LEE...EAST CENTRAL SCOTLAND AND CLARK COUNTIES IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled. However gusty winds and heavy rain are still
possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
west central Illinois...southeastern Iowa...and northeastern
Missouri.
LAT...LON 4056 9192 4068 9180 4062 9132 4055 9141
4050 9136 4045 9138 4040 9137 4036 9145
4029 9149 4046 9205
TIME...MOT...LOC 0655Z 274DEG 49KT 4055 9126
$$
ErvinThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 10:17 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Louisa, Washington | 58 min |
| Jun 18, 11:03 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 27 min |
| Jun 18, 11:21 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson | 39 min |
| Jun 18, 11:29 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Louisa | 46 min |
| Jun 18, 11:47 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Washington | 29 min |
| Jun 19, 12:02 AM CDT | Severe Thunderstorm Warning | DVN | Keokuk, Washington | 43 min |
| Jun 19, 12:12 AM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Keokuk, Van Buren, Washington | 48 min |
| Jun 19, 12:27 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa | 27 min |
| Jun 19, 1:28 AM CDT | Special Weather Statement | DVN | Louisa | 2 hr |
| Jun 19, 2:01 AM CDT | Special Weather Statement | DVN | Lee, Van Buren | 59 min |
| Jun 19, 4:33 AM CDT | Severe Thunderstorm Warning | DVN | Lee, Van Buren | 57 min |
| Jun 19, 4:17 AM CDT | Special Weather Statement | DVN | Clark | 28 min |
| Jun 19, 4:23 AM CDT | Special Weather Statement | DVN | Clark | 37 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2021Severe Thunderstorm Warnings in Missouri, 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.