On today’s EM Morning Brief, CISA adds eight actively exploited vulnerabilities to the Known Exploited Vulnerabilities Catalog with a May 11 federal remediation deadline. FEMA major disaster declarations for Montana, Idaho, and Oregon tied to December 2025 storms were published in the Federal Register, opening Public Assistance funding. Super Typhoon Sinlaku recovery continues across Guam and the CNMI under active federal emergency and public-health emergency determinations. Red Flag Warnings span the Plains, Southwest, and High Plains with critical fire weather peaking midweek, and the Hawaiian Volcano Observatory revises its Kilauea Episode 45 forecast window to April 21 through 26. State updates cover Texas flash flooding, Wisconsin tornado recovery, Oklahoma wildfire containment, and the ongoing response to the Minidoka Memorial Hospital cyber incident in Idaho. EM Morning Brief is your concise daily update on national and state-by-state emergency management news. Produced by Sitch Radio, an EOC Voices podcast.

Key Takeaways

• CISA KEV update: Eight new actively exploited CVEs added April 20 (PaperCut, JetBrains TeamCity, Kentico, Quest KACE, Zimbra, three Cisco SD-WAN Manager). Federal patch deadline May 11.

• FEMA declarations published: Major Disaster Declarations for Montana (DR-4901), Idaho (DR-4905), and Oregon formally appear in the Federal Register, opening Public Assistance for December 2025 storm damage.

• Sinlaku recovery: Federal emergency declarations and HHS public-health emergency remain in effect for Guam and the CNMI. Power and water restoration on Saipan, Tinian, and Rota may take weeks.

• Kilauea Episode 45: HVO revises the lava-fountaining forecast window to Tuesday, April 21 through Sunday, April 26. Summit remains paused but inflating.

• Fire weather: Red Flag Warnings active across Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, and Wyoming. Wednesday expected to be most dangerous day of the week.

• Texas flash flooding: Flash Flood Warning along San Antonio to New Braunfels corridor; SAFD reports nine water rescues. Houston metro sees localized urban flooding with rainfall rates up to three inches per hour.

• Wisconsin storm response: SEOC Update 4 reports 28 resource requests and continued coordination with county and tribal emergency managers following confirmed April 14 tornadoes and flood damage.

• Idaho hospital cyber incident: Minidoka Memorial Hospital restores imaging services April 19. Blackwater ransomware group claims April 17 and threatens data publication after April 24.

• April 17 tornado cleanup: NWS confirms a high-end EF-2 in Lena, Illinois; EF-1 tornadoes in Jo Daviess County, Illinois and Washington County, Iowa; and an EF-2 in Rochester, Minnesota with two injuries.

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Sources

CISA

• CISA Alert — Eight new KEV entries (April 20, 2026) — PaperCut, JetBrains TeamCity, Kentico Xperience, Quest KACE SMA, Zimbra, and three Cisco Catalyst SD-WAN Manager CVEs; federal patch deadline May 11, 2026

• CISA — Known Exploited Vulnerabilities Catalog — Authoritative catalog of actively exploited CVEs

FEMA

• Federal Register — Montana Major Disaster Declaration (DR-4901-DR) — Public Assistance Only for December 9-11, 2025 severe storms and flooding

• Federal Register — Idaho Major Disaster Declaration (DR-4905-DR) — Public Assistance Only for December 16-18, 2025 straight-line winds

• Federal Register — Oregon Major Disaster Declaration — Public Assistance Only for December 15-21, 2025 storms and landslides

• FEMA — DR-4901-MT page — Montana disaster assistance details and deadlines

• FEMA — Emergency Declaration for Guam — April 17, 2026 press release on Super Typhoon Sinlaku support

NIFC and wildland fire

• NIFC — National Fire News — April 20, 2026 daily national fire activity summary

• NICC — Incident Management Situation Report — Daily SITREP from the National Interagency Coordination Center

• InciWeb — Incident Information System — Active wildland-fire and incident records

USGS and volcano

• USGS — Kīlauea Volcano Updates — HVO summit eruption status and Episode 45 forecast window

• HVO Volcano Notice — April 19, 2026 — Revised Episode 45 timing: April 21 to April 26 window

• USGS — Significant Earthquakes 2026 — Catalog of significant events including the April 20 M7.4 near Miyako, Japan

NOAA/NWS

• NOAA Storm Prediction Center — Day 1 Convective Outlook — National severe-weather risk areas

• NOAA SPC — Fire Weather Outlook — Red Flag / critical fire-weather areas

HHS/CDC

• HHS ASPR — Public Health Emergency: CNMI and Guam / Typhoon Sinlaku — April 17, 2026 determination by the Secretary

• CDC HAN — Medetomidine Advisory — Prior HAN on illicit-drug-supply risk (context)

DHS

• DHS — National Terrorism Advisory System — NTAS bulletin page (no new bulletin in the last 24 hours)

FAA

• FAA — Daily Air Traffic Report — Weather-related delays and advisories

• FAA — National Airspace System Status — Real-time airport and NAS status

Alabama

• NWS Birmingham — Regional fire-weather and forecast

Alaska

• Alaska Earthquake Center — Adak M4.7 — April 20, 2026 Aleutian event, no tsunami

Arizona

• NWS SPC — Fire Weather Outlook — Red Flag conditions across the Southwest

Arkansas

• Arkansas Division of Emergency Management — State-level EM updates

California

• Cal Fire — Incidents — Active incident list and evacuation information

Colorado

• BoulderCAST — This Week in Colorado Weather (April 20, 2026) — Red Flag timing and wind outlook

Florida

• Florida State Watch Office — Florida Division of Emergency Management situation reports

• NWS Miami — Hazardous Weather Outlook — South Florida severe and marine hazards

Hawaii

• Hawai‘i County — Emergency Proclamation (April 2026) — Severe weather and concurrent hazards proclamation

• HVO — Kīlauea Notice April 19, 2026 — Episode 45 revised window

Idaho

• DataBreaches.net — Minidoka Memorial Hospital update (April 20, 2026) — Imaging services restored; Blackwater leak deadline April 24

• Comparitech — Blackwater claim and hospital impact — Ransomware claim and hospital response

• Idaho Office of Emergency Management — State-level disaster and mitigation updates

Illinois

• NWS Quad Cities — April 17, 2026 event summary (updated April 20) — Confirmed EF-2 and EF-1 tornadoes across western Illinois

• WQAD — April 17 tornado outbreak recap — Damage assessments and local impact

Indiana

• NWS Indianapolis — Freeze Warning — East-central and southeast Indiana

Iowa

• NWS Quad Cities — April 17 event summary (updated April 20) — Washington County EF-1 details

Kansas

• NWS SPC — Fire Weather Outlook — Red Flag areas across southern Plains

Minnesota

• NWS — April 17 Tornadoes (updated April 20) — Rochester EF-2 and regional damage

Mississippi

• WLOX — April showers? More like April drought — Dry-pattern context and rainfall totals

Montana

• FEMA — DR-4901 designated areas — County eligibility for Public Assistance

Nebraska

• KGFW — Red Flag Warning for central Nebraska — Noon to 9 p.m. Monday critical fire weather

Nevada

• NWS SPC — Fire Weather Outlook — Southwest wind and fire-weather details

New Mexico

• KRTN — Schwachheim Fire Update, April 20, 2026 — Local fire-line assessment

Ohio

• NWS Wilmington — Freeze Warning (April 20, 2026) — Southern Ohio overnight freeze

Oklahoma

• Oklahoma Department of Agriculture — Fire Situation Report (April 20, 2026) — Lightning Roll and Sunny Fire containment

Oregon

• Federal Register — Oregon Major Disaster Declaration — Public Assistance Only for December 2025 storms and landslides

South Dakota

• Men’s Journal — Red Flag Warnings across the High Plains — South Dakota, Nebraska, and Kansas zones through Monday evening

Texas

• NWS San Antonio / Texas Storm Chasers — Flash Flood Warning along the San Antonio to New Braunfels corridor

• Click2Houston — Houston severe threat, April 20, 2026 — Two to three inches per hour and heightened crash risk

Utah

• Snoflo — Utah snowpack status — Statewide snowpack near 32 percent of normal

Washington

• FEMA — Disasters and Other Declarations — Washington December 2025 winter-storm declaration

West Virginia

• WCHS — Freeze Warning remains in effect for most of West Virginia — Monday night through Tuesday morning

Wisconsin

• Wisconsin Emergency Management — SEOC Update 4 (April severe storms and flooding) — Resource requests and ongoing state coordination

• WTMJ — Governor Evers state of emergency — April 15, 2026 declaration

Wyoming

• NWS SPC — Fire Weather Outlook — High Plains critical fire-weather pattern

Guam

• FEMA — Emergency Declaration for Guam — April 17, 2026 press release

• Stars and Stripes — DoD schools to reopen, port operations (April 20, 2026) — Recovery status update from Guam

Commonwealth of the Northern Mariana Islands

• Isla Public — FEMA damage assessment after Sinlaku landfall — Published April 19, 2026

• HHS ASPR — Public Health Emergency: CNMI and Guam — Secretary’s April 17 determination

Good morning.

CISA expands its Known Exploited vulnerabilities catalog with eight new entries covering PaperCut, NG, MF, JetBrains, TeamCity, Kenneco, Experience Quest, Case Systems Management Appliance, Zimbra collaboration suite, and three Cisco Catalyst, SD, WAN manager flaws.

Security operations teams in state and local government and in critical infrastructure sectors are urged to treat the catalog as a prioritization input.

Eligible jurisdictions and applicants can begin cost sharing processes for emergency work and infrastructure repair.

Super Typhoon Sinlaku Recovery continues across the western Pacific.

The federal emergency declarations for Guam and the Commonwealth of the Northern Mariana Islands remain active, and the Department of Health and Human Services Public Health Emergency Determination for both territories stays in effect.

Expanding Medicare and Medicaid flexibilities during recovery.

FEMA damage assessment teams continue to evaluate impacts across Saipan, Tinian, Rota and Guam.

The National Interagency Fire center reports 25 large incidents in suppression and roughly 23 uncontained large fires nationwide, with 992 personnel assigned.

Fire weather remains the dominant national theme, with red flag warnings active across a broad swath of the Plains, Southwest and High Plains.

Forecasters flag Wednesday as the most dangerous day of the work week for critical fire spread.

The US Geological Survey records a magnitude 7.4 earthquake 100km east northeast of Miyako, Japan, is Regional tsunami advisories were issued and canceled and no Pacific tsunami messaging affected the US West Coast.

The Hawaiian Volcano Observatory issues an updated Kilauea notice.

Summit eruption paused, but inflation continues and episode 45 lava fountaining is now forecast in the window of Tuesday, April 21st through Sunday, April 26th.

Let's run through the Alabama Drier air settles in behind a cold front and fire weather concerns edge up across the state.

Forecasters note gusty northwest winds from 20 to 25 mph and highs in the upper 70s with no active severe weather watches statewide.

The Alaska Earthquake center logs a magnitude 4.7 event near Adak in the Aleutian chain at a depth of roughly 43 kilometers.

No tsunami is generated and no damage is reported.

Low level seismic tremors at several volcanic centers remain unchanged and aviation color codes are not elevated.

Fire Weather conditions tighten across the state.

Forecasters point to extreme fire danger days midweek with single digit relative humidity and afternoon gusts of 25-40 mph through the high country.

Wind advisories also cover portions of the Northwest.

A Storm Prediction center convective outlook places portions of Arkansas under a marginal to slight severe risk tied to the approaching midweek system.

The Arkansas Division of Emergency Management continues long term recovery work from earlier April storms and river level watches remain in place along portions of the Arkansas River.

California Wind and low cloud delays continue to affect Los Angeles and San Diego airports and gusty southwest winds prompt advisories across portions of southeastern California.

Fire activity remains limited, but Cal Fire and local agencies are still managing mop up and repopulation steps in the Palomar fire footprint.

In Riverside county, an Imperial county air quality alert is in effect due to wind blown dust.

Forecasters warn of harmful particle pollution levels for sensitive groups through Tuesday evening.

A red flag warning covers portions of eastern Colorado with critical fire weather through the evening and forecasters flag Wednesday as the most dangerous day of the week along the Front Range and Eastern Plains with afternoon gusts of 25-40 mph and single digit humidities.

Stage 2 fire restrictions remain in place in Los Animas county banning open burning, fireworks and outdoor smoking.

Florida the Storm Prediction center places portions of south Florida under a marginal severe weather risk tied to a cold frontal passage with heavy downpours, localized urban flooding and wind gusts of 30-35 mph possible from Lake Okeechobee south to the Keys.

A red flag warning is in effect from late morning through Tuesday evening for west central and southwest Florida with outdoor burning strongly discouraged, a high risk of rip currents and small craft advisories continue along Atlantic beaches through midweek.

The Hawaiian Volcano Observatory issues an updated notice on Kilauea indicating that the summit eruption in Halemaumau remains paused but inflation continues.

Models now place the next lava fountaining episode episode 45 between Tuesday, April 21 and Sunday, April 26.

Strong Glow the South Vent persists and HVO remains in close contact with Hawaii Volcanoes national park and Civil Defense.

Designated counties include Benoit, Boundary, Clearwater, Idaho, Kootenai, Latta, Lewis, Nez Perce and Shoshone.

Minidoka Memorial Hospital in Rupert confirms that medical imaging services have been restored following the Easter morning cyber incident first disclosed April 5.

The Blackwater ransomware Group claims responsibility and publishes a leak threat with an April 24 deadline.

Hospital leadership says it is working with cybersecurity experts and federal authorities.

Illinois Cleanup continues after the April 17 tornado outbreak.

The National Weather Service confirms six tornadoes across western Illinois, including a high end EF2 in Lena in Stevenson county with significant structural damage and an EF1 in Joe Davies County.

No serious injuries are reported and local emergency managers continue damage assessments alongside utility restoration crews.

Indiana A freeze warning issued by NWS Indianapolis covers portions of east central and southeast Indiana with sub freezing temperatures near 31 degrees expected.

Agricultural producers are urged to protect sensitive crops.

Iowa Washington county continues damage assessment after an EF1 tornado confirmed from the April 17 outbreak.

Estimated peak winds reached 105 mph and snapped power poles decreased, damaged farm buildings and overturned a semi near State Highway 1 in 92.

No injuries are reported.

A red flag warning is in effect for portions of southern and western Kansas as strong winds and low humidity combine with dry fuels.

State and county agricultural agencies remind operators that a single spark can trigger rapid fire spread.

Olmsted county emergency managers continue working with residents following the April 17 outbreak.

An EF2 tornado tracked through southern portions of Rochester, damaging multiple houses and causing two injuries.

Power restoration is largely complete.

Mississippi Dry conditions and ongoing drought concerns persist across south Mississippi.

Local forecasters describe April as one of the driest starts to the year on record in some zones and burn ban evaluations continue at the county level.

A red flag warning covers central Nebraska from noon to 9pm as gusty winds, warm temperatures and low humidity combine with critically dry fuels.

Emergency managers and fire Chiefs along Highway 6 have pre positioned Mutual Aid resources.

Wind advisories extend into southern Nevada from the broader southwest fire weather pattern with gusts up to 45 miles per hour.

Possible snow water equivalent remains well below normal across the Sierra Crest and Great Basin.

New Mexico Statewide fire restrictions remain in effect prohibiting open burning, fireworks and campfires.

Critical fire weather is forecast through the work week and the Schwacheim fire in the state's northeast continues suppression operations with an updated fireline assessment published April 20.

Portions of Southeast Ohio fall within the freeze warning issued by NWS Wilmington with sub freezing temperatures as low as 28 degrees in some valleys overnight into Tuesday morning.

Oklahoma A red flag warning covers portions of northwest and far western Oklahoma with critical fire weather forecast to intensify by Thursday and Friday ahead of a strong cold front.

The lightning roll fire in Beaver county has reached 2,412 acres and is 90% contained and the sunny fire northeast of Pawhuska in Osage county stands at 1,837 acres and 75 contained.

South Dakota Fire weather zones across portions of South Dakota are under a red flag warning through 9pm with critical humidity and wind conditions creating heightened potential for rapid fire spread.

A flash flood warning covers portions of the San Antonio to New Braunfels corridor with 3 to 5 inches of rain already reported and additional heavy rain possible overnight.

The San Antonio Fire Department reports nine water rescues during the day, most involving vehicle escorts out of high standing water.

The Houston Metro sees scattered heavy showers with localized urban flooding possible and rainfall rates of 2 to 3 inches per hour at the peak.

Forecasters warn of significantly elevated crash risk during heaviest downpours.

Utah Statewide Snowpack stands at roughly 32% of normal, the latest in a string of historically low snow water equivalent readings across the Intermountain West.

Wildfire outlook and water supply planning discussions continue at the state and basin level.

State emergency management continues to coordinate with local jurisdictions on public assistance applications.

West Virginia A freeze warning remains in effect through Tuesday morning for most of the state with sub freezing temperatures as low as 28 degrees in some areas.

The eastern Panhandle is excluded from the warning.

Portions of adjacent Ohio and Kentucky counties are included.

The Wisconsin Emergency Management State Emergency Operations center issues Update 4 on the April severe storms and flooding response.

The SCOC remains in contact with county and tribal emergency managers tracking home damage from confirmed tornadoes and flood damage to roads, culverts and bridges.

28 Resource requests have been received.

Governor Tony Evers State of Emergency declared April 15th remains in effect.

WYOMING Red flag Fire weather conditions cover portions of the state and forecasters warn that the pattern tightens Wednesday as the hot, dry, windy index approaches late April.

Record territory across the western High Plains.

All other states have no significant updates in the last 24 hours onto the territories.

Guam Recovery from Super Typhoon Sinlaku continues under the federal Emergency declaration approved April 17.

Department of Defense schools are scheduled to reopen Tuesday and Saipan's port has reopened for daytime only operations.

The Department of Health and Human Services public health emergency determination for Guam remains in effect.

Expanding Medicare and Medicaid flexibilities.

Commonwealth of the Northern Mariana Islands FEMA damage assessment teams continue work across Saipan, Tinian and Rota after Super Typhoon Sinlaku's April 14 landfall.

Utility officials indicate that water and power may be unavailable for weeks in some areas.

More than 11,000 homes across the three islands remain without power.

The Coast Guard continues port evaluations and Rota and Tinian ports remain closed pending further inspection.

The HHS public health emergency for the CNMI remains in effect.

All other territories and the District of Colombia have no significant updates in the last 24 hours.

That's your EM morning brief for Tuesday.

Stay safe.