Alert archive / Iowa / Tornado Warnings in 2018
Tornado Warning 44, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Jul 19, 2018, 3:54 PM CDT for Jasper County, Mahaska County, Marion County, Iowa. It was in force for 36 min. 7 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
- Jul 19, 2018, 3:54 PM CDT (20:54 UTC)
- Expired
- Jul 19, 2018, 4:30 PM CDT
- In force
- 36 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Tornado
- Observed
- Hail
- 0.75 in
Counties Jasper County, IA, Mahaska County, IA, Marion County, IA
The radar
The Des Moines radar (KDMX), 71 km from the middle of the area, began a volume at 20:57 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 |
|---|---|---|---|
| Jul 19, 4:00 PM CDT | TORNADO | Pella, IA | FROM PELLA POLICE DEPARTMENT. NEAR PELLA AIRPORT. |
| Jul 19, 4:03 PM CDT | FUNNEL CLOUD | 4 Ese Monroe, IA | NEAR OTLEY. |
| Jul 19, 4:06 PM CDT | TORNADO | 2 N Pella, IA | |
| Jul 19, 4:09 PM CDT | FUNNEL CLOUD | 4 Nnw Pella, IA | CONE TORNADO - VIA SOCIAL MEDIA. |
| Jul 19, 4:10 PM CDT | TORNADO | 1 E Pella, IA | VERMEER PLANT TOOK DIRECT HIT FROM TORNADO. SEVERAL INJURIES REPORTED. GAS LEAK DANGER AS WELL. |
| Jul 19, 4:14 PM CDT | HAIL 1.5 | 5 N Pella, IA | ALONG THE JASPER AND MARION COUNTY LINE. |
| Jul 19, 4:20 PM CDT | TORNADO | Pella, IA | MOVED PARALLEL WITH HIGHWAY 163. FARMSTEAD HIT WITH TRANSFORMERS EXPLODING. |
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 |
|---|---|---|---|
| Jul 19, 3:11 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 8.9 hours before the alert went out and 205 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
- 1807 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
924
WFUS53 KDMX 192054 RRA
TORDMX
IAC099-123-125-192130-
/O.NEW.KDMX.TO.W.0044.180719T2054Z-180719T2130Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
354 PM CDT THU JUL 19 2018
The National Weather Service in Des Moines has issued a
* Tornado Warning for...
Northeastern Marion County in south central Iowa...
Northwestern Mahaska County in south central Iowa...
South central Jasper County in central Iowa...
* Until 430 PM CDT.
* At 353 PM CDT, a confirmed tornado was located 4 miles southeast
of Monroe, or 7 miles northwest of Pella, moving southeast at 25
mph.
HAZARD...Damaging tornado.
SOURCE...Law enforcement confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* The tornado will be near...
Pella around 405 PM CDT.
Other locations impacted by this tornadic thunderstorm include Pella
Municipal Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4147 9306 4154 9300 4150 9275 4133 9289
TIME...MOT...LOC 2053Z 310DEG 21KT 4148 9300
TORNADO...OBSERVED
HAIL...<.75IN
$$
Martin3 follow-up statements
058
WWUS53 KDMX 192104
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
404 PM CDT THU JUL 19 2018
IAC099-192113-
/O.CAN.KDMX.TO.W.0044.000000T0000Z-180719T2130Z/
Jasper IA-
404 PM CDT THU JUL 19 2018
...THE TORNADO WARNING FOR SOUTH CENTRAL JASPER COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for south central
Iowa.
LAT...LON 4143 9301 4150 9294 4150 9275 4133 9289
TIME...MOT...LOC 2103Z 299DEG 22KT 4145 9292
$$
IAC123-125-192130-
/O.CON.KDMX.TO.W.0044.000000T0000Z-180719T2130Z/
Marion IA-Mahaska IA-
404 PM CDT THU JUL 19 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHEASTERN MARION AND NORTHWESTERN MAHASKA COUNTIES...
At 403 PM CDT, a confirmed tornado was located near Pella, moving
southeast at 25 mph.
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
northeastern Marion and northwestern Mahaska Counties, including the
following locations... Pella Municipal Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4143 9301 4150 9294 4150 9275 4133 9289
TIME...MOT...LOC 2103Z 299DEG 22KT 4145 9292
TORNADO...OBSERVED
HAIL...<.75IN
$$
Martin217
WWUS53 KDMX 192109
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
409 PM CDT THU JUL 19 2018
IAC123-125-192130-
/O.CON.KDMX.TO.W.0044.000000T0000Z-180719T2130Z/
Marion IA-Mahaska IA-
409 PM CDT THU JUL 19 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
NORTHEASTERN MARION AND NORTHWESTERN MAHASKA COUNTIES...
At 408 PM CDT, a confirmed tornado was located 1 mile northeast of
Pella, moving southeast at 25 mph.
HAZARD...Damaging tornado.
SOURCE...Law enforcement confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Pella.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4143 9296 4148 9292 4147 9278 4133 9289
TIME...MOT...LOC 2108Z 310DEG 21KT 4143 9289
TORNADO...OBSERVED
HAIL...<.75IN
$$
Martin356
WWUS53 KDMX 192123
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
423 PM CDT THU JUL 19 2018
IAC123-125-192132-
/O.EXP.KDMX.TO.W.0044.000000T0000Z-180719T2130Z/
Marion IA-Mahaska IA-
423 PM CDT THU JUL 19 2018
...THE TORNADO WARNING FOR NORTHEASTERN MARION AND NORTHWESTERN
MAHASKA COUNTIES WILL EXPIRE AT 430 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
Remember, a Tornado Warning still remains in effect for west central
Mahaska County until 445 PM CDT.
A Tornado Watch remains in effect until 1000 PM CDT for south central
Iowa.
LAT...LON 4143 9296 4148 9292 4147 9278 4133 9289
TIME...MOT...LOC 2122Z 310DEG 21KT 4138 9281
$$
MartinThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 3:14 AM CDT | Special Weather Statement | DMX | Mahaska | 61 min |
| Jul 19, 12:17 PM CDT | Special Weather Statement | DMX | Emmet, Humboldt, Kossuth | 58 min |
| Jul 19, 2:41 PM CDT | Special Weather Statement | DMX | Franklin, Hamilton, Hardin, Wright | 64 min |
| Jul 19, 2:50 PM CDT | Tornado Warning | DMX | Jasper, Marshall, Polk | 25 min |
| Jul 19, 3:05 PM CDT | Tornado Warning | DMX | Franklin, Hamilton, Hardin, Wright | 40 min |
| Jul 19, 3:11 PM CDT | Tornado Warning | DMX | Jasper | 34 min |
| Jul 19, 3:22 PM CDT | Tornado Warning | DMX | Marshall, Story | 38 min |
| Jul 19, 3:26 PM CDT | Tornado Warning | DMX | Hamilton, Hardin, Marshall, Story | 34 min |
| Jul 19, 3:37 PM CDT | Tornado Warning | DMX | Jasper, Mahaska, Marion | 23 min |
| Jul 19, 3:40 PM CDT | Tornado Warning | DMX | Franklin, Hardin | 35 min |
| Jul 19, 3:54 PM CDT | Tornado Warning | DMX | Grundy, Hardin, Marshall, Story | 51 min |
| Jul 19, 4:14 PM CDT | Tornado Warning | DMX | Mahaska, Marion | 31 min |
| Jul 19, 4:18 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 42 min |
| Jul 19, 4:36 PM CDT | Tornado Warning | DMX | Mahaska, Wapello | 24 min |
| Jul 19, 4:37 PM CDT | Tornado Warning | DMX | Marshall, Tama | 23 min |
| Jul 19, 4:52 PM CDT | Tornado Warning | DMX | Mahaska, Wapello | 38 min |
| Jul 19, 4:52 PM CDT | Tornado Warning | DMX | Marshall, Poweshiek, Tama | 38 min |
| Jul 19, 5:12 PM CDT | Tornado Warning | DMX | Poweshiek, Tama | 18 min |
| Jul 19, 5:13 PM CDT | Tornado Warning | DMX | Davis, Mahaska, Wapello | 47 min |
| Jul 19, 5:55 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 20 min |
Nearby
Tornado Warnings in Iowa, 2018Every tornado warning in 2018Tornadoes in 2018
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.