Alert archive / Iowa / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 80, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Jun 24, 2021, 8:04 PM CDT for Fremont County, Page County, Iowa. It was in force for 26 min. 1 report 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 24, 2021, 8:04 PM CDT (01:04 UTC)
- Expired
- Jun 24, 2021, 8:30 PM CDT
- In force
- 26 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Fremont County, IA, Page County, IA
The radar
The Omaha radar (KOAX), 107 km from the middle of the area, began a volume at 01:05 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 24, 8:12 PM CDT | TSTM WND DMG | Farragut, IA | NUMEROUS LARGE TREE BRANCHES BLOWN DOWN THROUGHOUT TOWN. |
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 24, 3:44 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 1.1 hours before the alert went out and 107 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
- 384 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1210 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -38 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -2.1
The text
As transmitted.
763
WUUS53 KOAX 250104
SVROAX
IAC071-145-250130-
/O.NEW.KOAX.SV.W.0080.210625T0104Z-210625T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Omaha/Valley Nebraska
804 PM CDT Thu Jun 24 2021
The National Weather Service in Omaha has issued a
* Severe Thunderstorm Warning for...
Eastern Fremont County in southwestern Iowa...
Western Page County in southwestern Iowa...
* Until 830 PM CDT.
* At 804 PM CDT, severe thunderstorms were located along a line
extending from 6 miles northwest of Farragut to Riverton, moving
east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Farragut around 810 PM CDT.
Shenandoah around 820 PM CDT.
Other locations in the path of these severe thunderstorms include
Essex, Coin and Blanchard.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for southwestern
Iowa.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4058 9546 4060 9563 4087 9560 4085 9517
4058 9517
TIME...MOT...LOC 0104Z 273DEG 31KT 4080 9554 4069 9557
HAIL...<.75IN
WIND...60MPH
$$
Petersen2 follow-up statements
676
WWUS53 KOAX 250121
SVSOAX
Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
821 PM CDT Thu Jun 24 2021
IAC071-145-250130-
/O.CON.KOAX.SV.W.0080.000000T0000Z-210625T0130Z/
Fremont IA-Page IA-
821 PM CDT Thu Jun 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR EAST CENTRAL FREMONT AND SOUTHWESTERN PAGE COUNTIES...
At 820 PM CDT, severe thunderstorms were located along a line
extending from near Shenandoah to 5 miles southeast of Farragut,
moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Coin and Blanchard.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for southwestern
Iowa.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4058 9537 4066 9548 4082 9544 4081 9517
4058 9517
TIME...MOT...LOC 0120Z 273DEG 31KT 4079 9536 4068 9539
HAIL...<.75IN
WIND...60MPH
$$
Petersen198
WWUS53 KOAX 250128
SVSOAX
Severe Weather Statement
National Weather Service Omaha/Valley Nebraska
828 PM CDT Thu Jun 24 2021
IAC071-145-250137-
/O.EXP.KOAX.SV.W.0080.000000T0000Z-210625T0130Z/
Fremont IA-Page IA-
828 PM CDT Thu Jun 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL FREMONT AND
SOUTHWESTERN PAGE COUNTIES WILL EXPIRE AT 830 PM CDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 1000 PM CDT for southwestern
Iowa.
LAT...LON 4058 9537 4066 9548 4082 9544 4081 9517
4058 9517
TIME...MOT...LOC 0127Z 273DEG 31KT 4079 9529 4068 9532
$$
PetersenNearby
Severe Thunderstorm Warnings in Iowa, 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.