Alert archive / Iowa / Tornado Warnings in 2017
Tornado Warning 21, NWS Omaha, NE
NWS Omaha, NE issued this tornado warning at Jun 28, 2017, 3:41 PM CDT for Fremont County, Page County, Iowa. It was in force for 34 min. 3 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 28, 2017, 3:41 PM CDT (20:41 UTC)
- Expired
- Jun 28, 2017, 4:15 PM CDT
- In force
- 34 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 2.0 in
Counties Fremont County, IA, Page County, IA
The radar
The Omaha radar (KOAX), 103 km from the middle of the area, began a volume at 20:43 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 28, 3:44 PM CDT | TORNADO | 3 W Shenandoah, IA | SPOTTER OBSERVED TORNADO DESCEND TO GROUND |
| Jun 28, 3:57 PM CDT | TORNADO | Ene Sidney, IA | |
| Jun 28, 4:25 PM CDT | HAIL 2.5 | 5 Nw Yorktown, IA |
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 28, 2:53 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 8.7 hours before the alert went out and 103 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
- 742 J/kg
- Mixed-layer CIN
- -297 J/kg
- Mixed-layer LCL
- 831 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 721 m²/s²
- 0-3 km storm-relative helicity
- 852 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
The text
As transmitted.
894
WFUS53 KOAX 282041
TOROAX
IAC071-145-282115-
/O.NEW.KOAX.TO.W.0021.170628T2041Z-170628T2115Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Omaha/Valley Nebraska
341 PM CDT WED JUN 28 2017
The National Weather Service in Omaha has issued a
* Tornado Warning for...
Northeastern Fremont County in southwestern Iowa...
Northwestern Page County in southwestern Iowa...
* Until 415 PM CDT
* At 341 PM CDT, a severe thunderstorm capable of producing a tornado
was located 4 miles northeast of Sidney, or 26 miles northwest of
Tarkio, moving east at 30 mph.
HAZARD...Tornado and hail up to two inches in diameter.
SOURCE...Radar indicated rotation.
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 dangerous storm will be near...
Farragut around 345 PM CDT.
Shenandoah around 400 PM CDT.
Essex around 415 PM CDT.
Other locations impacted by this tornadic thunderstorm include Pierce
Recreation Area.
This includes Highway 59 in Iowa between mile markers 13 and 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4073 9516 4072 9565 4082 9565 4091 9528
4090 9520
TIME...MOT...LOC 2041Z 250DEG 24KT 4079 9557
TORNADO...RADAR INDICATED
HAIL...2.00IN
$$
FOBERT2 follow-up statements
493
WWUS53 KOAX 282049
SVSOAX
Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
349 PM CDT WED JUN 28 2017
IAC071-145-282115-
/O.CON.KOAX.TO.W.0021.000000T0000Z-170628T2115Z/
Fremont IA-Page IA-
349 PM CDT WED JUN 28 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR
NORTHEASTERN FREMONT AND NORTHWESTERN PAGE COUNTIES...
At 349 PM CDT, a confirmed tornado was located near Farragut, or 23
miles north of Tarkio, moving east at 25 mph.
HAZARD...Damaging tornado and two inch hail.
SOURCE...Weather spotters confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Shenandoah around 405 PM CDT.
Essex around 415 PM CDT.
Other locations impacted by this tornadic thunderstorm include Pierce
Recreation Area.
This includes Highway 59 in Iowa between mile markers 13 and 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4073 9516 4072 9565 4082 9565 4091 9528
4090 9520
TIME...MOT...LOC 2049Z 265DEG 22KT 4077 9551
TORNADO...OBSERVED
HAIL...2.00IN
$$
FOBERT062
WWUS53 KOAX 282100
SVSOAX
Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
400 PM CDT WED JUN 28 2017
IAC071-145-282115-
/O.CON.KOAX.TO.W.0021.000000T0000Z-170628T2115Z/
Fremont IA-Page IA-
400 PM CDT WED JUN 28 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR EAST
CENTRAL FREMONT AND NORTHWESTERN PAGE COUNTIES...
At 400 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Shenandoah, or 22 miles north of Tarkio, moving east
at 25 mph.
HAZARD...Tornado and two inch hail.
SOURCE...Radar indicated rotation.
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 dangerous storm will be near...
Essex around 415 PM CDT.
Other locations impacted by this tornadic thunderstorm include Pierce
Recreation Area.
This includes Highway 59 in Iowa between mile markers 10 and 16.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4072 9546 4082 9545 4091 9528 4090 9520
4073 9516
TIME...MOT...LOC 2100Z 263DEG 24KT 4076 9541
TORNADO...RADAR INDICATED
HAIL...2.00IN
$$
FOBERTThe office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 3:42 AM CDT | Special Weather Statement | OAX | Fremont, Mills | 33 min |
| Jun 28, 4:10 AM CDT | Special Weather Statement | OAX | Page | 50 min |
| Jun 28, 3:17 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 43 min |
| Jun 28, 4:14 PM CDT | Tornado Warning | OAX | Page | 31 min |
| Jun 28, 4:24 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 36 min |
| Jun 28, 4:29 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 31 min |
| Jun 28, 4:44 PM CDT | Severe Thunderstorm Warning | OAX | Page | 31 min |
| Jun 28, 5:09 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 39 min |
| Jun 28, 5:14 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 20 min |
| Jun 28, 5:37 PM CDT | Severe Thunderstorm Warning | OAX | Page | 25 min |
Nearby
Tornado Warnings in Iowa, 2017Every tornado warning in 2017Tornadoes in 2017
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.