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HP2DFA > ALERT    17.09.26 03:06l 55 Lines 2749 Bytes #297 (0) @ WW
BID : 2073_HP2DFA
Subj: WX ALERT CENTRAL AMERICA SEP17
Path: IZ3LSV<ED1ZAC<GB7CIP<GB7JED<GB7BED<K1AJD<LU9DCE<PY2BIL<HP2DFA
Sent: 260917/0038Z 2073@HP2DFA.#COL.PAN.CEAM BPQ6.0.24

Here is the English translation of the forecast and advisory breakdown for tomorrow, Thursday, September 17, 2026:

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**CENTRAL AMERICA WATCHES AND ADVISORIES FOR TOMORROW**

For tomorrow, **Thursday, September 17, 2026**, official meteorological services and civil protection agencies across Central America (INSIVUMEH, MARN, SNET, IMN, and IMHPA) maintain the following active watch advisories and preventive alerts across the region:

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**1. Country-by-Country Summary**

* **Panama (IMHPA / SINAPROC):**
* **National Watch Advisory:** Active across both slopes, the Central Mountain Range, and maritime zones due to **significant rainfall and frequent thunderstorms**.
* **Critical Risks:** Landslides caused by high soil saturation and flash flooding of fast-responding rivers.


* **Costa Rica (IMN / CNE):**
* **Green and Yellow Alerts:** Monitoring focused on the Central Pacific, South Pacific, and Central Valley regions due to active ITCZ interaction.
* **Critical Risks:** Urban flash flooding and overflowing of fast-responding river basins.


* **El Salvador (MARN):**
* **Thunderstorm & Trough Advisory:** Monitoring moderate to heavy downpours along the volcanic chain and coastal strip, accompanied by wind gusts.


* **Guatemala (INSIVUMEH / CONRED):**
* **Seasonal Watch Bulletins:** Special focus on the Volcanic Chain (high risk of lahars due to water saturation) and the Pacific slope foothills (*bocacosta*).


* **Honduras and Nicaragua (Copeco / INETER):**
* Routine monitoring for afternoon showers and downpours induced by incoming sea breezes and local instability.



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**2. Regional Hazard Matrix**

| Hazard Type | High-Watch Zones | Trigger Factor |
| --- | --- | --- |
| **Landslides / Mudslides** | Central Mountain Range (Panama/Costa Rica) & Volcanic Chain (El Salvador/Guatemala) | Highly saturated soils from continuous September rains. |
| **Flooding / River Surges** | Valleys, Pacific river basins, and urban areas with poor drainage | Heavy rainfall bursts over short durations during the afternoon. |
| **Severe Gusts / Convective Winds** | Storm cell areas across the entire isthmus | Cold downdrafts associated with deep convective clouds (*cumulonimbus*). |

---

**3. Recommended Safety Precautions**

1. **Avoid crossing or traveling near** rivers, streams, or low-water crossings with elevated water levels.
2. **Monitor slopes:** Report ground cracks or mudflows immediately to local emergency response authorities (CONRED, SINAPROC, CNE, MARN).
3. **Coastal Navigation:** Small craft should exercise extreme caution along the Pacific coast due to localized rough seas and sudden visibility drops during afternoon thunderstorms.

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